CN113410104A - Cloud wisdom breaker based on HPLC - Google Patents
Cloud wisdom breaker based on HPLC Download PDFInfo
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- CN113410104A CN113410104A CN202110525802.4A CN202110525802A CN113410104A CN 113410104 A CN113410104 A CN 113410104A CN 202110525802 A CN202110525802 A CN 202110525802A CN 113410104 A CN113410104 A CN 113410104A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
- H01H2071/042—Means for indicating condition of the switching device with different indications for different conditions, e.g. contact position, overload, short circuit or earth leakage
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Abstract
The invention discloses a cloud intelligent circuit breaking device based on HPLC (high performance liquid chromatography), and relates to the technical field of power equipment; the broadband power line carrier High Performance Liquid Chromatography (HPLC) device comprises a circuit breaker, wherein the circuit breaker comprises a shell, a controller and a circuit breaking execution unit, the controller and the circuit breaking execution unit are arranged on the shell, the controller is electrically connected with the circuit breaking execution unit, the broadband power line carrier HPLC unit is arranged on the shell, and the broadband power line carrier HPLC unit is electrically connected with the controller; the high working efficiency of the circuit breaker is realized through the shell, the controller, the circuit breaking execution unit, the broadband power line carrier HPLC unit and the like.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a cloud intelligent circuit breaking device based on HPLC.
Background
Aiming at the problems of difficult line loss analysis, untimely fault discovery, three-phase unbalance of distribution transformer and the like in a transformer area, the traditional solution has the problems of large analysis range, low efficiency, potential safety hazard and the like.
Analysis of pain points:
1. line loss analysis is difficult. For the line loss analysis of the transformer area, the traditional solution is to collect data by a system, compare and analyze the abnormal line loss condition, lock abnormal equipment or abnormal users, and further measure the line loss condition on site by using a measuring device by inspectors.
2. The fault is not reported in time. The discovery of the low-voltage transformer area fault has serious hysteresis, which is usually known only by a user dialing an emergency repair telephone, the system cannot realize active fault reporting, cannot judge the fault type and the fault position, and emergency repair personnel need to arrive at the site to perform fault troubleshooting, thus consuming time and labor.
3. The topological relationship is unclear. The problem that the low-voltage transformer area indoor variable relations are inconsistent occurs occasionally, the traditional solution is that a transformer area recognition instrument is utilized, a power frequency signal with high power is injected into a circuit, the signal is measured at an electric device or a metering device, so that the topological relation is determined, and the method has potential safety hazards in wiring.
4. Three-phase imbalance is difficult to adjust. The three-phase unbalance phenomenon of the distribution transformer area generally exists, the unbalance degree mostly exceeds the national standard regulation, particularly after large-load users such as 'coal changes electricity' in winter access equipment, the unbalance degree of part of the transformer area even reaches 70%, and the traditional solution is manual field detection and calculation and manual phase modulation.
Problems with the prior art and considerations:
how to solve the lower technical problem of circuit breaker work efficiency.
Disclosure of Invention
The invention aims to solve the technical problem of providing a cloud intelligent circuit breaking device based on HPLC (high performance liquid chromatography), which realizes higher working efficiency of a circuit breaker through a shell, a controller, a circuit breaking execution unit, a broadband power line carrier HPLC unit and the like.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a cloud wisdom breaker device includes the circuit breaker based on HPLC, the circuit breaker includes the casing and sets up controller and the execution unit that opens circuit on the casing, the controller is connected with the execution unit electricity that opens circuit, still including setting up the broadband power line carrier HPLC unit on the casing, broadband power line carrier HPLC unit is connected with the controller electricity.
The further technical scheme is as follows: the electric energy metering device is characterized by further comprising an electric energy metering unit arranged on the shell and used for metering electric energy, and the electric energy metering unit is electrically connected with the controller.
The further technical scheme is as follows: the phase-change switch is arranged on the shell and is electrically connected with the controller.
The further technical scheme is as follows: the phase change switch is a three-phase change switch.
The further technical scheme is as follows: the display is arranged on the shell and electrically connected with the controller.
The further technical scheme is as follows: the display device further comprises a key, and the key is electrically connected with the display and is in one-way communication.
The further technical scheme is as follows: the display is a liquid crystal display.
The further technical scheme is as follows: the display is a touch display.
The further technical scheme is as follows: the key is a touch key.
The further technical scheme is as follows: the controller is a single chip microcomputer.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the utility model provides a cloud wisdom breaker device includes the circuit breaker based on HPLC, the circuit breaker includes the casing and sets up controller and the execution unit that opens circuit on the casing, the controller is connected with the execution unit electricity that opens circuit, still including setting up the broadband power line carrier HPLC unit on the casing, broadband power line carrier HPLC unit is connected with the controller electricity. According to the technical scheme, the breaker is high in working efficiency through the shell, the controller, the breaking execution unit, the broadband power line carrier HPLC unit and the like.
See detailed description of the preferred embodiments.
Drawings
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is a diagram illustrating the physical effect of the metering unit according to the present invention;
FIG. 3 is a diagram of the physical effect of the broadband power line carrier HPLC unit according to the present invention;
FIG. 4 is a topological diagram of an HPLC according to the present invention;
FIG. 5 is a schematic diagram of fault study and report in the present invention;
FIG. 6 is a three-phase waveform of an imbalance in the present invention;
FIG. 7 is a balanced three-phase waveform of the present invention;
FIG. 8 is a topological diagram of commutation according to the present invention;
FIG. 9 is a graph of the effect of the application of the present invention;
FIG. 10 is a graph of loss reduction in the present invention;
FIG. 11 is a block diagram of topology identification in the present invention;
FIG. 12 is a graph comparing rush repair time before and after rebuild in the present invention;
fig. 13 is a graph showing the change in the three-phase imbalance ratio before and after the commissioning of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
As shown in fig. 1, the invention discloses a cloud intelligent circuit breaking device based on HPLC, which comprises a housing, and a controller, a circuit breaking execution unit, a broadband power line carrier HPLC unit, an electric energy metering unit for metering electric energy, a phase change switch, a display and a key which are fixed on the housing, wherein the housing, the controller and the circuit breaking execution unit are formed into a circuit breaker in the prior art.
The controller is a single chip microcomputer.
The phase change switch is a three-phase change switch.
The display is a liquid crystal display.
The key is a touch key.
The controller is electrically connected with the circuit breaking execution unit, is electrically connected with the broadband power line carrier HPLC unit and is in two-way communication, is electrically connected with the electric energy metering unit and is in two-way communication, is electrically connected with the phase change switch, is electrically connected with the display and is in two-way communication, and the key is electrically connected with the display and is in one-way communication.
The controller, the open circuit execution unit, the broadband power line carrier HPLC unit, the electric energy metering unit, the phase change switch, the display, the keys and the corresponding communication connection technology are not described herein in detail for the prior art.
Compared with the above embodiment, the display is a touch display, and replaces a liquid crystal display and a key combination.
The conception of the application is as follows:
aiming at the problems of difficult line loss analysis, untimely fault discovery, three-phase unbalance of distribution transformer and the like in a transformer area, the traditional solution has the problems of large analysis range, low efficiency, potential safety hazard and the like.
The applicant has found that the above problems arise because: in a power supply system, a common circuit breaker widely applied to a low-voltage transformer area has the functions of overload, short circuit, undervoltage protection and the like, but does not have the functions of metering, fault analysis and transmission, and cannot realize automatic phase modulation.
Due to the popularization and application of the HPLC broadband module, the HPLC technology has the advantages of large bandwidth, high transmission rate and the like, and with the deepened application of the HPLC function, the higher requirement of equipment can be met by utilizing the HPLC remote upgrading technology, and the personalized experience of a user is improved.
Description of the technical solution:
aiming at the problems existing in the current application situation, the cloud intelligent circuit breaking device based on HPLC + is designed, and comprehensive intelligent sensing functions such as high-precision measurement, automatic topology recognition, fault analysis reporting, automatic phase balance adjustment and the like are integrated.
1. Realize accurate measurement function of branch circuit
As shown in fig. 2, the cloud smart circuit breaker device with the high-precision metering unit is designed with the electric energy metering unit on the basis of keeping the original circuit breaker function and designing the liquid crystal display screen and the key query function, so that the high-precision measurement of voltage level 0.5, current level 0.5, power level 1 and electric energy level 1 can be realized, and the metering technical parameters are shown in table 1, aiming at the problems that the line loss analysis is difficult and the abnormal user is difficult to lock.
Table 1: measurement of technical parameters
Rely on the high accuracy measurement function of wisdom breaker, can provide effective data support for the line loss analysis of platform district and user side. The line loss analysis of each level of the transformer area general table and the branch box, the meter box and the household meter can be realized, the line loss abnormal point is quickly positioned, and the troubleshooting efficiency of the loss point in the transformer area is improved.
And comparing the difference value of the total electric quantity of the distribution room and the sum of the total electric quantity of each watt-hour meter of the distribution room, and calculating and analyzing the line loss rate of the distribution room so as to judge whether the line loss of the distribution room is in a reasonable range. If the station area line loss rate exceeds a reasonable range, the measurement data of the cloud intelligent circuit breaking device and the circuit breaking device in the distribution box and the circuit breaking device in the ammeter box can be further calculated according to the station transformer side line outlet, the circuit or the specific position where the line loss occurs is analyzed, the on-site inspection of a worker is arranged, and the accurate positioning of the abnormal branch of the line loss is realized.
2. Topology identification function based on HPLC deep application
As shown in fig. 3, the cloud intelligent circuit breaker device with the HPLC unit is designed with a built-in broadband power line carrier HPLC unit aiming at the difficult problems of untimely fault discovery and difficult accurate positioning in a low-voltage distribution area, and the HPLC unit based on the broadband carrier technology can realize interconnection and intercommunication between the circuit breaker device and a concentrator and an electric meter, thereby improving the reliability and stability of communication.
As shown in fig. 4, the HPLC automatic topology identification diagram and the HPLC communication technology have the function of automatic topology identification of the power grid, and the application of the cloud smart cut-off device can realize accurate and automatic branch identification, so as to provide a real and reliable basis for automatically drawing the topology of the distribution room.
3. Low-voltage transformer area fault study and judgment and rapid positioning
As shown in fig. 5, the fault study and judgment reporting diagram is shown, and the fault study and judgment and rapid reporting functions are realized based on the advanced application of the functions of HPLC non-metering data transmission, event reporting and the like. When the circuit broke down, can fix a position fast and be the device trouble condition of which platform district on which circuit, fix a position the trouble more fast, accurately, improve the circuit and salvage efficiency, realize comprehensive wisdom perception, reduce fortune dimension cost.
4. Realize the automatic phase change function of the low-voltage load
As shown in fig. 6, when one area is unbalanced, the three-phase waveform diagram of the distribution transformer load causes the quality of low-voltage power to be reduced due to the three-phase imbalance, and when the distribution transformer load is serious, the low voltage at the tail end of a heavy-load phase is easily caused, and even single-phase overload trip is caused. In order to adjust the phenomenon of three-phase imbalance, the intelligent circuit breaking device is designed with an automatic phase-changing function, single-phase loads are intelligently controlled to be switched, and three-phase balance of the whole transformer area is achieved from a load end.
As shown in fig. 7, the three-phase oscillogram when one distribution area is balanced can collect distribution and transformation three-phase current, voltage and electric quantity data in real time, automatically calculate the optimal balance switching scheme according to the operation condition of the branch three-phase load, and redistribute the three-phase load of the distribution area through intelligently switching the single-phase load of the distribution area, thereby really solving the problem of three-phase imbalance of the distribution area.
As shown in fig. 8, when the device monitors a phase trip, the cloud smart circuit breaker device can automatically switch the load of the power failure phase to other electrified phases and actively report the load, and the system simultaneously calculates an optimal load distribution scheme and sends commands to each smart circuit breaker device, so that the device can switch the load in a multi-stage linkage manner, thereby really realizing smart management.
5. Remote automatic cloud upgrading function of equipment
In order to save the equipment updating cost and reduce the manual maintenance cost, a software module is added into the device, and the remote automatic cloud upgrading of the equipment is realized. With the deep mining of the HPLC application technology, the upgrading technology based on the multivariate data transmission mode can bring wider application prospects for new requirements of equipment version upgrading and personalized requirements of user meters.
After the application runs secretly for a period of time, the feedback of field technicians has the advantages that:
as shown in fig. 9, the "cloud" smart cut-off device based on HPLC + can be widely applied to the branch side and the meter box side of the low-voltage distribution room, and takes three "coal-to-electricity" distribution rooms in the city as test points and tests for operation, thereby obtaining six significant effects.
1. Improving the line loss analysis and theft checking efficiency
As shown in fig. 10, by applying the loss reduction diagram after the intelligent circuit breaker, the test point application of the intelligent circuit breaker realizes the accurate calculation and query of the line loss of the branch line, quickly locates the abnormal area, and improves the analysis efficiency. And (5) counting the change of the daily line loss rate during the test operation. 3 users who steal electricity are checked during the trial run, the electricity amount is supplemented by 2.32 ten thousand kWh, and the electricity charge is supplemented by 1.08 ten thousand yuan.
2. The topological relation of the low-voltage transformer area is clearer
As shown in fig. 11, the automatic topology identification structure finds that the inconsistent user variable relationships are 6 users in total through the HPLC distribution area automatic identification function, thereby realizing the intelligent identification of the topology relationships and improving the intelligent management level of the archive.
3. Improve the efficiency of the fault first-aid repair
As shown in fig. 12, the comparison graph of the rush-repair time before and after transformation, during the trial operation, the low-voltage line breaks down for 2 times, the rapid reporting is realized, the situation that the fault occurs in the circuit breaking device of which area on which line is located is rapidly, the average rush-repair time is reduced from 2 hours to 30 minutes, the fault location is faster and more accurate, the rush-repair efficiency of the line is improved, the maintenance time is reduced, and the customer satisfaction and the feeling of acquisition are improved.
4. Realize three-phase balance at load end
As shown in fig. 13, the three-phase imbalance rate changes before and after commissioning, and during the commissioning period, the system automatically changes the phase 5 times, and the three-phase imbalance rate is reduced from 41.5% to 11.2%.
5. Realize the improvement of economic benefit
The cloud intelligent circuit breaking device reduces equipment and installation cost, operation and maintenance cost and rush repair cost, and loss reduction, theft detection and efficiency improvement. The change of project cost of the 3 test point areas before and after the transformation is shown in table 2.
Through statistical calculation, the cost of each item of 3 test point platform areas is reduced by 2.3 ten thousand yuan before and after the test operation. At present, 3726 low-voltage transformer areas are shared in the local city, and after conservative calculation and popularization and installation of the cloud intelligent circuit breaking device, economic benefit is achieved by 2 million yuan, and after popularization to the north of Hebei province, economic benefit is achieved by 1.2 million yuan.
Table 2: project cost change before and after reconstruction
6. Realize the energy-saving and loss-reducing benefits
"cloud" wisdom circuit breaker not only reduces line loss and transformer loss, has still improved electric energy quality, improves terminal low-voltage, extension equipment life, has realized cloud intelligence upgrading function simultaneously, reduces manpower, vehicle and administrative cost, and green energy construction realizes "carbon reaches the peak, carbon neutralizes".
Promoting transformation and upgrading of the power marketing industry:
the cloud intelligent circuit breaking device based on HPLC + completes the national initial technical breakthrough, tests successfully in the local area, realizes the functions of accurate line loss calculation, fault study and judgment, positioning, automatic topology identification, intelligent linkage commutation and the like, can be popularized to relevant power supply and utilization acquisition systems, and has very wide application prospect.
With the full-coverage application of the broadband module, the cloud upgrading technology based on the multi-data transmission mode avoids the rotation of hardware equipment, the upgrading speed is high, the investment cost is low, if the intelligent device is popularized to the provincial power supply system, the improvement cost is saved by 1.2 million yuan, and the economic benefit is generated by 35.6 million yuan when the intelligent device is popularized and applied in the national range.
Claims (10)
1. The utility model provides a cloud wisdom breaker device based on HPLC, includes the circuit breaker, the circuit breaker includes the casing and sets up controller and the execution unit that opens circuit on the casing, the controller is connected its characterized in that with the execution unit electricity that opens circuit: the broadband power line carrier HPLC unit is arranged on the shell and is electrically connected with the controller.
2. The HPLC-based cloud smart cut-off device of claim 1, wherein: the electric energy metering device is characterized by further comprising an electric energy metering unit arranged on the shell and used for metering electric energy, and the electric energy metering unit is electrically connected with the controller.
3. The HPLC-based cloud smart cut-off device of claim 1, wherein: the phase-change switch is arranged on the shell and is electrically connected with the controller.
4. The HPLC-based cloud smart cut-off device of claim 3, wherein: the phase change switch is a three-phase change switch.
5. The HPLC-based cloud smart cut-off device of claim 1, wherein: the display is arranged on the shell and electrically connected with the controller.
6. The HPLC-based cloud smart cut-off device of claim 5, wherein: the display device further comprises a key, and the key is electrically connected with the display and is in one-way communication.
7. The HPLC-based cloud smart cut-off device of claim 5, wherein: the display is a liquid crystal display.
8. The HPLC-based cloud smart cut-off device of claim 5, wherein: the display is a touch display.
9. The HPLC-based cloud smart cut-off device of claim 6, wherein: the key is a touch key.
10. An HPLC-based cloud smart cut-off device according to any one of claims 1 to 9, wherein: the controller is a single chip microcomputer.
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| CN202110525802.4A CN113410104A (en) | 2021-05-14 | 2021-05-14 | Cloud wisdom breaker based on HPLC |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110525802.4A CN113410104A (en) | 2021-05-14 | 2021-05-14 | Cloud wisdom breaker based on HPLC |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115965770A (en) * | 2022-12-29 | 2023-04-14 | 国网北京市电力公司 | Low-voltage line fault abnormity three-dimensional visualization method, device, equipment and medium |
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| US20070226290A1 (en) * | 2006-03-21 | 2007-09-27 | Ali Khorramshahi | Intelligent grid system |
| CN105186449A (en) * | 2015-10-12 | 2015-12-23 | 国家电网公司 | Residual current circuit breaker |
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| CN115965770A (en) * | 2022-12-29 | 2023-04-14 | 国网北京市电力公司 | Low-voltage line fault abnormity three-dimensional visualization method, device, equipment and medium |
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Application publication date: 20210917 |