CN209543688U - A kind of substation's experience system - Google Patents
A kind of substation's experience system Download PDFInfo
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- CN209543688U CN209543688U CN201721845423.9U CN201721845423U CN209543688U CN 209543688 U CN209543688 U CN 209543688U CN 201721845423 U CN201721845423 U CN 201721845423U CN 209543688 U CN209543688 U CN 209543688U
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Abstract
The utility model discloses a kind of substation's experience systems, including electrical equipment screen cabinet, station level and main electrical scheme display screen；The electrical equipment screen cabinet is provided with equivalent electrical primary equipment and the electrical secondary equipment with the equivalent electrical primary coordinative composition of equipments；The electrical secondary equipment and the main electrical scheme display screen respectively with the station level communication connection；The main electrical scheme display screen also with the electrical secondary equipment communication connection.The running environment for building true substation, and the various normal operation operating statuses of imitating substation and set various malfunctions etc. are realized, enable real training personnel to transforming plant primary equipment and secondary device deeper into understanding.Using the technical solution of the utility model, teaching result can be improved.
Description
Technical field
The utility model relates to technical field of power systems, and in particular to a kind of substation's experience system.
Background technique
Since comprehensive automation system of transformer substation and microcomputer protecting device are instead of the console in traditional substation
And therefore protective relaying device is the reality that related technical personnel carry out integrated automation of transformation stations associative skills in production scene
Instruction is just particularly important.
In the prior art, a large amount of dispatcher's simulation training system has been put into electric system and substation operation personnel is imitative
True exercising system, they play the role of raising electric power system dispatching, the specialized capability of operations staff.But they are often
The only system of simple function, moreover, and in very big degree use Computer Simulation, less use actual field equipment, it
Cannot be supplied to student one complete practical substation's technology situation, the training for substation's post skill training level
Instruction, is difficult the teaching result having had.
Utility model content
The purpose of this utility model is to provide a kind of substation's experience systems, and reality can not be provided in the prior art by solving
The problem of border substation technology situation makes the training of substation's post skill training level, is difficult the teaching result having had.
To achieve the above object, the utility model provides a kind of substation's experience system,
Including electrical equipment screen cabinet, station level and main electrical scheme display screen；
The electrical equipment screen cabinet be provided with equivalent electrical primary equipment and with the equivalent electrical primary coordinative composition of equipments
Electrical secondary equipment；
The electrical secondary equipment and the main electrical scheme display screen respectively with the station level communication connection；
The main electrical scheme display screen also with the electrical secondary equipment communication connection.
Further, substation's experience system described above further includes debugging and maintenance screen cabinet；
The debugging and maintenance screen cabinet is provided with test device for relay protection；
The test device for relay protection is connect with the electrical secondary equipment.
Further, in substation's experience system described above, the equivalent electrical primary equipment include by band lamp by
The equivalent disconnecting link of button, by the equivalent breaker of relay or contactor, by the equivalent high-voltage mutual inductor of low voltage mutual inductor, by low pressure
The equivalent high-voltage arrester of arrester, by the equivalent high-tension fuse of low-tension fuse, by the equivalent high-voltage electricity of secondary capacitor
Container, by the equivalent high voltage reactor of low tension reactor, by the equivalent main transformer of custom transformer and station local coordinate frame, by copper
Arrange equivalent high voltage bus and the load by resistance or equivalent impedance.
Further, in substation's experience system described above, the electrical equipment screen cabinet include main transformer screen cabinet, with
The corresponding route screen cabinet of the main transformer, station local coordinate frame screen cabinet and compensating electric capacity screen cabinet；
The electrical secondary equipment includes main transformer protection device, line protective devices, station local coordinate frame protective device and benefit
Repay capacitor protective device.
Further, substation's experience system described above further includes power supply panel cabinet；
The power supply panel cabinet is provided with main transformer screen cabinet operation power, route screen cabinet operation power, station local coordinate frame
Shield cabinet operation power, compensating electric capacity screen cabinet operation power and debugging and maintenance screen cabinet operation power.
Further, in substation's experience system described above, each operation power includes alternating current operation power supply and straight
Flow operation power.
Further, in substation's experience system described above, the debugging and maintenance screen cabinet is additionally provided with blocking device；
The main transformer screen cabinet, the route screen cabinet, the station local coordinate frame screen cabinet and the compensating electric capacity screen cabinet
It is provided with standing power switch；
The test device for relay protection is connect by the standing power switch with the electrical secondary equipment；
The standing power switch and the debugging and maintenance screen cabinet operation power are connect with the blocking device respectively.
Further, in substation's experience system described above, the direct current operative power source includes battery, charging dress
It sets and apparatus for monitoring power supply；
The battery and the charging unit are connect with the apparatus for monitoring power supply respectively；
The battery is also connect with the charging unit.
Further, in substation's experience system described above, the main electrical scheme display screen is provided with double bus scheme
Line map, single-trunk segmental wiring line map, in bypass connection line map, Gratz connection line map, 3/2 diagram of wiring
It is at least one.
Substation's experience system of the utility model passes through setting electrical equipment screen cabinet, equivalent electrical primary equipment and institute
The electrical secondary equipment, station level and main electrical scheme display screen of equivalent electrical primary coordinative composition of equipments are stated, and equivalent electrical primary is set
Standby and electrical secondary equipment is arranged on electrical equipment screen cabinet, forms equivalent substation, electrical secondary equipment and main electrical scheme are shown
Display screen with station level communication connection, and main electrical scheme display screen is realized also with electric secondary secondary device communication connection respectively
Build the running environment of true substation, and the various normal operation operating statuses of imitating substation and set various events
Barrier state etc. enables real training personnel to transforming plant primary equipment and secondary device deeper into understanding.Using the utility model
Technical solution can be improved teaching result.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of substation's experience system embodiment one of the utility model；
Fig. 2 is the structural schematic diagram of substation's experience system embodiment two of the utility model；
Fig. 3 is substation's experience system application scenarios schematic diagram of the utility model.
Specific embodiment
It is specific below in conjunction with the utility model to keep the purpose of this utility model, technical solution and advantage clearer
Technical solutions of the utility model are clearly and completely described in embodiment and corresponding attached drawing.Obviously, described embodiment
It is only the utility model a part of the embodiment, instead of all the embodiments.The embodiment of base in this present embodiment, this field are general
Logical technical staff every other embodiment obtained without making creative work belongs to the utility model guarantor
The range of shield.
Specification and claims and the (if present)s such as term " first " in above-mentioned attached drawing, " second " are for area
Not similar part, without being used to describe a particular order or precedence order.It should be understood that the data used in this way are appropriate
In the case of can be interchanged, so that embodiments herein described herein can be real with the sequence other than illustrating herein
It applies.
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
Embodiment 1
Fig. 1 is the structural schematic diagram of substation's experience system embodiment one of the utility model, as shown in Figure 1, this implementation
Substation's experience system of example may include electrical equipment screen cabinet 10, station level 11 and main electrical scheme display screen 12.Wherein, it electrically sets
Standby screen cabinet 10 is provided with equivalent electrical primary equipment 101 and electrical secondary equipment matched with equivalent electrical primary equipment 101
102, equivalent substation is formed, electrical secondary equipment 102 and main electrical scheme display screen 12 are main to connect respectively with 11 communication connection of station level
Line display screen 12 also with 102 communication connection of electrical secondary equipment.
For example, the equivalent electrical primary equipment 101 of the present embodiment may include by with the equivalent disconnecting link of button, by relay
Or the equivalent breaker of contactor, by the equivalent high-voltage mutual inductor of low voltage mutual inductor, by the equivalent high voltage lightning-protection of low voltage surge arrester
Device, by the equivalent high-tension fuse of low-tension fuse, by the equivalent high-voltage capacitor of secondary capacitor, equivalent by low tension reactor
High voltage reactor, by the equivalent main transformer of custom transformer and station local coordinate frame, by the equivalent high voltage bus of copper bar and
By resistance or the load of equivalent impedance etc., reasonable equivalent electrical primary equipment 101, this reality can be chosen according to actual needs
Example is applied to be not particularly limited.
When choosing electrical secondary equipment 102, can be chosen according to following principle: must comply fully with national standard " after
Electric protection and automatic safety device technical regulation GB/T 14285-2006 " and other regulations, with equivalent electrical primary equipment 101
It is mating, it can specifically include control subsystem, relay protection and automatic device subsystem, signaling subsystem, adjust subsystem, is comprehensive
Automatically-monitored subsystem, telemechanical subsystem are closed, these subsystems have to comply with capacity, scale, the electricity of equivalent substation
Gas primary connection and position in the power system.
Reasonable equivalent electrical primary equipment 101 and electrical secondary equipment 102 are chosen in the present embodiment, it can be with by assembling
Form an equivalent substation, and can be with the normal operating condition of the primary system of imitating substation and set various
Malfunction etc. has equivalence compared with actual substation, and cost is relatively low, and safety is higher, can satisfy different hilllocks
The technical staff of position completes real training.
Specifically, the main electrical scheme display screen 12 of the present embodiment is provided with substation's classics diagram of wiring, for example, the classics
Diagram of wiring may include but be not limited to double bus scheme line map, single-trunk segmental wiring line map, band bypass connection
At least one of line map, Gratz connection line map, 3/2 diagram of wiring, can be according to connecing on main electrical scheme display screen 12
Line line map chooses corresponding equivalent electrical primary equipment 101 and electrical secondary equipment 102, and completes wiring, meanwhile, it can incite somebody to action
Electrical secondary equipment 102 and 12 communication connection of main electrical scheme display screen, electrical secondary equipment 102 monitor equivalent electrical primary equipment
Real-time status and real-time parameter after, be sent to main electrical scheme display screen 12, equivalent electrical primary shown by main electrical scheme display screen 12
The real-time status and real-time parameter of equipment.
It should be noted that equivalent electrical primary equipment 101 and electrical secondary equipment 102 are removable in the present embodiment
It unloads, after breaking down, facilitates maintenance, replacement etc..In addition, the diagram of wiring in main electrical scheme display screen 12 is preferably classics
Bus arrangement line map, but in practical application, it can be modified according to actual needs, to meet various connection circuitries
Real training.
In the present embodiment, electrical secondary equipment 102 and main electrical scheme display screen 12 can be communicated with station level 11 respectively and be connected
It connects, so that station level 11 be enable to measure, monitor and protect to the operation of quasi- substation and malfunction.For example, this reality
Monitoring software can be arranged in station level 11 by applying in example, can be controlled using the data acquisition of power monitoring with monitoring
(Supervisory Control And Data Acquisition, SCADA) system, so as to acquire electric current, electricity in real time
The analog quantitys such as pressure, frequency, switching value, pulsed quantity and protection information, can with the switching of each equivalent breaker of real-time control, with
And under fault condition, appliance for releasing single jumps out failure window and audible alarm, real-time processing data, and counting statistics supports CDT,
Communication protocol SC1801, μ 4F etc. popular in electric system is supported to upload scheduling system, records various events, including user
Operation, analog quantity is out-of-limit, multiple limit, and switching value displacement, failure, accident etc., audible alarm push away picture, and use can be arranged in dynamic effect
Family rights management.
Substation's experience system of the present embodiment, by setting electrical equipment screen cabinet 10, equivalent electrical primary equipment 101,
Electrical secondary equipment 102 matched with the equivalent electrical primary equipment 101, station level 11 and main electrical scheme display screen 12, and will
Equivalent electrical primary equipment 101 and electrical secondary equipment 102 are arranged on electrical equipment screen cabinet 10, form equivalent substation, will
Electrical secondary equipment 102 and main electrical scheme display screen 12 respectively with 11 communication connection of station level, and by main electrical scheme display screen 12 with
102 communication connection of electrical secondary equipment realizes the running environment for building true substation, and the various operations of imitating substation
Normal operating condition and set various malfunctions etc. enable real training personnel to transforming plant primary equipment and secondary set
For deeper into understanding.Using the technical solution of the utility model, teaching result can be improved.
Embodiment 2
Fig. 2 is the structural schematic diagram of substation's experience system embodiment two of the utility model, as shown in Fig. 2, this implementation
It further can also include debugging and maintenance screen cabinet 13 on the basis of substation's experience system embodiment shown in Fig. 1 of example, and
Test device for relay protection 131 is set in debugging and maintenance screen cabinet 13, by the test device for relay protection 131 and electrical secondary equipment
102 connections.The test device for relay protection 131 can continuously export a variety of different voltages, the magnitude of current, amount of resistance, direction
Phase mass, frequency quantity, simulate the various failures of electric system, be added corresponding failure amount, can test various types of relay protections with
Automatic device and the confirmation of relative theory function, debug the very convenient of verifying work, ensure that equipment safety and personnel's peace
Entirely, verification efficiency is also accelerated.
During a specific implementation, equivalent substation is managed for convenience, and the present embodiment can be according to substation
Each electrical equipment is managed concentratedly, for example, the electrical equipment screen cabinet 10 of the present embodiment may include but be not limited to main transformer
Shield cabinet, route screen cabinet corresponding with transformer, station local coordinate frame screen cabinet and compensating electric capacity screen cabinet, corresponding, electric secondary
Equipment 102 includes main transformer protection device, line protective devices, station local coordinate frame protective device and compensating electric capacity protective device.This
Equivalent electrical primary equipment 101 and matched electrical secondary equipment 102 can be mounted in corresponding sub- screen cabinet by sample, then will
Connection is realized by control cable between son screen cabinet, to form equivalent substation, can quickly analyze each electrical equipment in this way
Operating status, fault message etc..
As shown in Fig. 2, substation's experience system of the present embodiment can also include power supply panel cabinet 14, wherein power supply panel cabinet
14 are provided with main transformer screen cabinet operation power, route screen cabinet operation power, station local coordinate frame screen cabinet operation power, compensation electricity
Hold screen cabinet operation power and debugging and maintenance screen cabinet operation power.Each operation power can be led to corresponding son by air switch
Screen cabinet perhaps shields in cabinet to be powered to corresponding sub- screen cabinet or screen cabinet.
For example, each operation power may include alternating current operation power supply and direct current operative power source, wherein direct current operative power source
Including battery, charging unit and apparatus for monitoring power supply；Battery and charging unit are connect with apparatus for monitoring power supply respectively, electric power storage
Pond is also connect with charging unit, situations such as abnormal occurs when abnormal or charging occurs in battery, apparatus for monitoring power supply can be carried out
Warning note.Under normal circumstances, it can use alternating current operation power supply to be powered equivalent substation, and battery carried out
Power supply can switch to direct current operative power source and power to equivalent substation if the unusual conditions such as occurring having a power failure.
Maloperation in order to prevent, as shown in Fig. 2, locking dress can also be arranged in debugging and maintenance screen cabinet 13 in the present embodiment
132 are set, and is respectively provided with standing power supply in main transformer screen cabinet, route screen cabinet, station local coordinate frame screen cabinet and compensating electric capacity screen cabinet
Switch 103, test device for relay protection 131 are connect by standing power switch 103 with electrical secondary equipment 102, and power supply is set up
Switch 103 and debugging and maintenance screen cabinet operation power are connect with blocking device 132 respectively.
During a specific implementation, when every height screen cabinet is in operating status, debugging and maintenance screen cabinet operation power
It cannot come into operation.When every height screen cabinet is in maintenance debugging mode, all standing power supplys are exited, blocking device
132 movements, debugging and maintenance screen cabinet operation power automatically engage, and system enters debugging mode, if there is standing power supply does not exit,
Blocking device 132 is failure to actuate, maintenance power supply can not put into, this ensure that maintenance when, debug the safety of power supply, be unlikely to because
Equipment is damaged for maloperation, improves safety.
Embodiment 3
Fig. 3 be the utility model substation's experience system application scenarios schematic diagram, as shown in figure 3, the present embodiment with
The technical solution of the utility model is described for 110kV substation.
As shown in figure 3, substation's experience system of the present embodiment may include 1# debugging and maintenance screen cabinet, 1# station local coordinate frame
Son screen cabinet, 1# compensating electric capacity screen cabinet, 1#10kV route screen cabinet, 1#35kV route screen cabinet, 1# main transformer screen cabinet, 1#110kV
Route screen cabinet, 1# power supply panel cabinet, 2# debugging and maintenance screen cabinet, 2# station local coordinate frame screen cabinet, 2# compensating electric capacity screen cabinet, 2#10kV
Route screen cabinet, 2#35kV route screen cabinet, 2# main transformer screen cabinet, 2#110kV route screen cabinet and 2# power supply panel cabinet, it is corresponding
, station level may include 1# monitoring host computer, 2# monitoring host computer and control centre's monitoring host computer.Each equivalent electrical primary equipment,
Electrical secondary equipment is separately positioned in corresponding sub- screen cabinet, and whole transformer station experience system can pass through cable and/or communication
Bus realization is connected and communicate with, and is no longer shown herein.
In the present embodiment, main transformer protection device can be equipped with differential protection as main protection, three side of main transformer senior middle school low pressure
Composite voltage overcurrent protection, zero sequence excess current protection, overload protection are provided with as back-up protection, is further provided with various non-
Electric quantity protective and measure and control device.
110KV line protective devices equipped with I, II, III sections of distance protections, zero-sequenceprotection, composite voltage overcurrent protection,
Overload protection, etc. the protection of various different principles, also there is low-frequency load reduction, low-voltage load sheding and three-phase single shot reclosing, failure
The automatic devices function such as recording.
10KV line protective devices and 35KV line protective devices can be equipped with I, II, III sections of overcurrent protections, can be with
Voltage, negative sequence voltage blocking function are set, in addition the protection of the different principles such as overload protection, zero-sequenceprotection also has low week
Off-load and three-phase single shot reclosing function.
Compensating electric capacity protective device can be equipped with overvoltage protection, low-voltage protection, overcurrent protection, unbalance voltage
The protection of the different principles such as protection.
Station local coordinate frame protective device can be equipped with I, II sections of current protections, zero sequence excess current protection, zero sequence inverse time lag
Protection, overload protection etc..
In the present embodiment, the high side voltage of main transformer preferably exchanges 400V, and medium voltage side voltage preferably exchanges
133V, low-pressure side voltage preferably exchanges 36V, in this way, the voltage of mesolow side is just reduced, it also can be smaller using capacity
Load, reduce fever, further improve the safety of substation's experience system；In addition, the present embodiment does not need to configure
Special load box, load are just mounted in corresponding electrical equipment screen, more compact structure.
The present embodiment, can be behind screen cabinet there are repair and maintenance channel, before shielding cabinet when arranging substation's experience system
Face there are it is enough operation and training channel, and by 1# monitoring host computer, 2# monitoring host computer and control centre's monitoring host computer respectively with
Main electrical scheme display screen is oppositely arranged, and convenient now and after remote operation student observes training operation result.For example, the present embodiment
In, any operation on sub- screen cabinet and/or screen cabinet is very easily found out operating result by main electrical scheme display screen, is facilitated
Run the training of operation.
It should be noted that operator, can be according to listed by main electrical scheme display screen before formal operation in the present embodiment
The wiring diagram of act carries out pre-operation, after confirming listed operating procedure correctly, can just carry out formal operation.
In addition, the present embodiment is described the technical solution of the utility model by taking 2 sets of screen cabinets as an example, in practical application
More set screen cabinets can be set according to actual needs, the real training personnel of more multiple groups can be met simultaneously in this way while carrying out real training, this
Embodiment is not particularly limited, in addition, the realization principle of the realization principle of the substation of other voltage class and 110kV substation
It is identical, it no longer illustrates one by one herein.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (9)
1. a kind of substation's experience system, which is characterized in that including electrical equipment screen cabinet, station level and main electrical scheme display screen；
The electrical equipment screen cabinet is provided with equivalent electrical primary equipment and electrical with the equivalent electrical primary coordinative composition of equipments
Secondary device；
The electrical secondary equipment and the main electrical scheme display screen respectively with the station level communication connection；
The main electrical scheme display screen also with the electrical secondary equipment communication connection.
2. substation's experience system according to claim 1, which is characterized in that further include debugging and maintenance screen cabinet；
The debugging and maintenance screen cabinet is provided with test device for relay protection；
The test device for relay protection is connect with the electrical secondary equipment.
3. substation's experience system according to claim 2, which is characterized in that the equivalent electrical primary equipment include by
With the equivalent disconnecting link of button, by the equivalent breaker of relay or contactor, by the equivalent high-voltage mutual inductor of low voltage mutual inductor,
By the equivalent high-voltage arrester of low voltage surge arrester, by the equivalent high-tension fuse of low-tension fuse, equivalent by secondary capacitor
High-voltage capacitor, by the equivalent high voltage reactor of low tension reactor, by the equivalent main transformer of custom transformer and station transformation
Device, by the equivalent high voltage bus of copper bar and by the load of resistance or equivalent impedance.
4. substation's experience system according to claim 3, which is characterized in that the electrical equipment screen cabinet includes main transformer
Shield cabinet, route screen cabinet corresponding with the main transformer, station local coordinate frame screen cabinet and compensating electric capacity screen cabinet；
The electrical secondary equipment includes main transformer protection device, line protective devices, station local coordinate frame protective device and compensation electricity
Hold protective device.
5. substation's experience system according to claim 4, which is characterized in that further include power supply panel cabinet；
The power supply panel cabinet is provided with main transformer screen cabinet operation power, route screen cabinet operation power, station local coordinate frame screen cabinet
Operation power, compensating electric capacity screen cabinet operation power and debugging and maintenance screen cabinet operation power.
6. substation's experience system according to claim 5, which is characterized in that each operation power includes alternating current operation electricity
Source and direct current operative power source.
7. substation's experience system according to claim 5, which is characterized in that the debugging and maintenance screen cabinet, which is additionally provided with, to be closed
Locking device；
The main transformer screen cabinet, the route screen cabinet, the station local coordinate frame screen cabinet and the compensating electric capacity screen cabinet are all provided with
It is equipped with standing power switch；
The test device for relay protection is connect by the standing power switch with the electrical secondary equipment；
The standing power switch and the debugging and maintenance screen cabinet operation power are connect with the blocking device respectively.
8. substation's experience system according to claim 6, which is characterized in that the direct current operative power source includes electric power storage
Pond, charging unit and apparatus for monitoring power supply；
The battery and the charging unit are connect with the apparatus for monitoring power supply respectively；
The battery is also connect with the charging unit.
9. -8 any substation's experience system according to claim 1, which is characterized in that the main electrical scheme display screen setting
There are double bus scheme line map, single-trunk segmental wiring line map, band bypass connection line map, Gratz connection line map, 3/2 to connect
At least one of line line map.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721845423.9U CN209543688U (en) | 2017-12-22 | 2017-12-22 | A kind of substation's experience system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721845423.9U CN209543688U (en) | 2017-12-22 | 2017-12-22 | A kind of substation's experience system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209543688U true CN209543688U (en) | 2019-10-25 |
Family
ID=68243161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721845423.9U Expired - Fee Related CN209543688U (en) | 2017-12-22 | 2017-12-22 | A kind of substation's experience system |
Country Status (1)
| Country | Link |
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| CN (1) | CN209543688U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341182A (en) * | 2020-03-09 | 2020-06-26 | 北京智联友道科技有限公司 | Teaching system for rail transit power system training |
| CN112072646A (en) * | 2020-08-25 | 2020-12-11 | 国网经济技术研究院有限公司 | Voltage loss fault simulation method for direct-current power supply of intelligent substation |
| CN113658492A (en) * | 2021-08-09 | 2021-11-16 | 国网上海市电力公司 | Cable line operation and inspection training method and system with relay protection equipment |
-
2017
- 2017-12-22 CN CN201721845423.9U patent/CN209543688U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341182A (en) * | 2020-03-09 | 2020-06-26 | 北京智联友道科技有限公司 | Teaching system for rail transit power system training |
| CN112072646A (en) * | 2020-08-25 | 2020-12-11 | 国网经济技术研究院有限公司 | Voltage loss fault simulation method for direct-current power supply of intelligent substation |
| CN113658492A (en) * | 2021-08-09 | 2021-11-16 | 国网上海市电力公司 | Cable line operation and inspection training method and system with relay protection equipment |
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Granted publication date: 20191025 Termination date: 20211222 |