CN109672205A - A kind of method of the single-ended system that puts into operation of flexible direct current loop network system - Google Patents
A kind of method of the single-ended system that puts into operation of flexible direct current loop network system Download PDFInfo
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- CN109672205A CN109672205A CN201710950147.0A CN201710950147A CN109672205A CN 109672205 A CN109672205 A CN 109672205A CN 201710950147 A CN201710950147 A CN 201710950147A CN 109672205 A CN109672205 A CN 109672205A
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- switch
- direct current
- flexible direct
- network system
- loop network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
A kind of method that the present invention discloses single-ended system that puts into operation of flexible direct current loop network system, the flexible direct current loop network system includes both ends inverter, the anode of each inverter is connected with same dc switch or every knife by DC line, the cathode of each inverter is connected with same dc switch or every knife by DC line, and the exchange side of each inverter includes concatenated alternating current inlet wire switch；Described method includes following steps: single-ended Operation Mode of Converter is revised as STATCOM operation；Single-ended inverter alternating current inlet wire switch closes, charging resistor bypass；Converter valve is unlocked, submodule voltage is charged to specified；It is latched converter valve, and closes DC side switch or disconnecting link immediately；After DC side switch or disconnecting link close, converter valve is unlocked, station of stopping transport is put into successfully.Such method can realize other end of not stopping transport, and allow stoppage in transit inverter input coefficient, to reduce the impact to system.
Description
Technical field
The invention belongs to direct current transportation field, in particular to a kind of single-ended system that puts into operation of flexible direct current loop network system
Method.
Background technique
Electromagnetic looped network, also known as high and low electromagnetic circle net refer to that the route of two groups of different voltages grades passes through both ends transformer
The connection of magnetic loop and parallel running.
Since the characteristic differences such as the different grades of multi-line power transmission ability of high-low voltage are larger, China transports electromagnetic looped network
Row has the specific instruction of comparison, in 2001 editions " guiding rules of power system safety and stability ", has such regulation: with height
The construction of voltage order one power grid, subordinate voltage power grid should be done step-by-step partition running, keep mutual backup between adjacent sectors.It answers
The electromagnetic looped network for seriously affecting the different voltages grade of electricity net safety stable is avoided and eliminates, power plant should not install composition electromagnetism
The connecting transformer of looped network.
According to the regulation of above-mentioned directive/guide, electromagnetic looped network mainly appears on the initial stage of power grid with higher voltage power grid construction.So
And in building and running in actual electric network, due to needing to take into account multiple constraint conditions such as reliability, safety and economy,
Electromagnetic looped network solution inscription of loop is still an extremely complex problem, the operation and management of long-standing problem electric system.
At the same time, with the development of power electronic devices and control technology, electricity is turned off using IGBT, IGCT etc. are novel
Power electronic device composition voltage source converter (Voltage Source Converter, VSC) progress direct current transportation becomes can
Can, solid technical support is provided for the development of flexible DC transmission technology.Converter station based on VSC can rectification with it is inverse
Switch between change, relative to customary DC, having can power to passive system, have dynamic reactive enabling capabilities, without handing over
Many technical advantages such as filter are flowed, provide a kind of more flexible, efficiently power transmission mode for power grid, meanwhile, the area Ye Wei
The dilatation and transformation of domain power grid provide new thinking.
Summary of the invention
The purpose of the present invention is to provide a kind of method of single-ended system that puts into operation of flexible direct current loop network system, can
Realization is not stopped transport other end, allows stoppage in transit inverter input coefficient, to reduce the impact to system.
In order to achieve the above objectives, solution of the invention is:
A kind of method of the single-ended system that puts into operation of flexible direct current loop network system, the flexible direct current loop network system include two
Hold inverter, the anode of each inverter is connected with same dc switch or every knife by DC line, each inverter
Cathode be connected with same dc switch or every knife by DC line, the exchange side of each inverter includes concatenated friendship
Flow into wiretap；Described method includes following steps:
Step 1, single-ended Operation Mode of Converter is revised as STATCOM operation；
Step 2, single-ended inverter alternating current inlet wire switch closes, charging resistor bypass；
Step 3, converter valve is unlocked, submodule voltage is charged to specified；
Step 4, it is latched converter valve, and closes DC side switch or disconnecting link immediately；
Step 5, after DC side switch or disconnecting link close, converter valve is unlocked, station of stopping transport is put into successfully.
In above-mentioned flexible direct current loop network system, exchanges also series connection access between the alternating current inlet wire switch of side and converter valve and be coupled
Transformer.
In above-mentioned flexible direct current loop network system, the also series connection access change of current between the alternating current inlet wire switch of side and converter valve is exchanged
Transformer.
In above-mentioned flexible direct current loop network system, also series connection access charging between the alternating current inlet wire switch of side and converter valve is exchanged
Resistance.
The both ends of above-mentioned charging resistor by-pass switch also in parallel.
The both ends of above-mentioned charging resistor by-pass knife switch also in parallel.
After adopting the above scheme, the present invention is according to the operating condition for having run flexible direct current loop network system, by simple and reliable
A series of sequence operations unlock station of stopping transport and are connected with operation station by DC line, flexible direct current looped network list may be implemented
The undisturbed investment of inverter is held, and realizes the continuous service of flexible direct current looped network other end inverter.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of flexible direct current loop network system according to the present invention；
Fig. 2 is flow chart of the invention.
Specific embodiment
Below with reference to attached drawing, technical solution of the present invention is described in detail.
As shown in Figure 1, being flexible direct current loop network system attachment structure schematic diagram applied by the present invention, the flexible direct current
Loop network system includes both ends inverter, and the anode of each inverter is by DC line with same dc switch or every knife phase
Even, the cathode of each inverter is connected with same dc switch or every knife by DC line, the exchange of each inverter
Side includes concatenated alternating current inlet wire switch.
As shown in Fig. 2, the present invention provides a kind of method of single-ended system that puts into operation of flexible direct current loop network system, including such as
Lower step:
Step 1, single-ended Operation Mode of Converter is revised as STATCOM operation；
Step 2, single-ended inverter alternating current inlet wire switch closes, charging resistor bypass；
Step 3, converter valve is unlocked, submodule voltage is charged to specified；
Step 4, it is latched converter valve, and closes DC side switch or disconnecting link immediately；
Step 5, after DC side switch or disconnecting link close, converter valve is unlocked, station of stopping transport is put into successfully.
The flexible direct current loop network system that the present invention is applicable in, can also be between the alternating current inlet wire switch and converter valve of exchange side
Series connection access is coupled transformer or converter power transformer, can also connect between the alternating current inlet wire switch and converter valve of the exchange side
Access charging resistor, the both ends of charging resistor by-pass switch also in parallel or by-pass knife switch.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (6)
1. a kind of method of the single-ended system that puts into operation of flexible direct current loop network system, the flexible direct current loop network system includes both ends
Inverter, the anode of each inverter are connected with same dc switch or every knife by DC line, each inverter
Cathode is connected with same dc switch or every knife by DC line, and the exchange side of each inverter includes concatenated exchange
Incoming switch；It is characterized in that described method includes following steps:
Step 1, single-ended Operation Mode of Converter is revised as STATCOM operation；
Step 2, single-ended inverter alternating current inlet wire switch closes, charging resistor bypass；
Step 3, converter valve is unlocked, submodule voltage is charged to specified；
Step 4, it is latched converter valve, and closes DC side switch or disconnecting link immediately；
Step 5, after DC side switch or disconnecting link close, converter valve is unlocked, station of stopping transport is put into successfully.
2. a kind of method of the single-ended system that puts into operation of flexible direct current loop network system as described in claim 1, it is characterised in that:
In the flexible direct current loop network system, exchanges also series connection access between the alternating current inlet wire switch of side and converter valve and be coupled transformer.
3. a kind of method of the single-ended system that puts into operation of flexible direct current loop network system as described in claim 1, it is characterised in that:
In the flexible direct current loop network system, exchanges also series connection between the alternating current inlet wire switch of side and converter valve and access converter power transformer.
4. a kind of method of the single-ended system that puts into operation of flexible direct current loop network system as described in claim 1, it is characterised in that:
In the flexible direct current loop network system, exchanges also series connection between the alternating current inlet wire switch of side and converter valve and access charging resistor.
5. a kind of method of the single-ended system that puts into operation of flexible direct current loop network system as claimed in claim 4, it is characterised in that:
The both ends of charging resistor by-pass switch also in parallel.
6. a kind of method of the single-ended system that puts into operation of flexible direct current loop network system as claimed in claim 4, it is characterised in that:
The both ends of charging resistor by-pass knife switch also in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710950147.0A CN109672205A (en) | 2017-10-13 | 2017-10-13 | A kind of method of the single-ended system that puts into operation of flexible direct current loop network system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710950147.0A CN109672205A (en) | 2017-10-13 | 2017-10-13 | A kind of method of the single-ended system that puts into operation of flexible direct current loop network system |
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| Publication Number | Publication Date |
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| CN109672205A true CN109672205A (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710950147.0A Pending CN109672205A (en) | 2017-10-13 | 2017-10-13 | A kind of method of the single-ended system that puts into operation of flexible direct current loop network system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391669A (en) * | 2019-07-24 | 2019-10-29 | 国网冀北电力有限公司检修分公司 | A kind of change of current valve control system |
| CN115333139A (en) * | 2022-07-07 | 2022-11-11 | 中国长江三峡集团有限公司 | Flexible direct current transmission control method, electronic equipment and medium |
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| CN103618305A (en) * | 2013-11-27 | 2014-03-05 | 南方电网科学研究院有限责任公司 | Method for live access of multi-terminal flexible direct-current power transmission system by using isolating switch |
| CN103683282A (en) * | 2013-12-13 | 2014-03-26 | 荣信电力电子股份有限公司 | Method for paralleling shutdown converter stations in multi-terminal flexible direct current transmission system |
| CN104184138A (en) * | 2014-08-21 | 2014-12-03 | 南京南瑞继保电气有限公司 | Method for one end of multi-end flexible direct-current power transmission system to exit from operation system |
| CN105703385A (en) * | 2014-11-27 | 2016-06-22 | 南京南瑞继保电气有限公司 | Start-stop method of multi-terminal flexible direct current power transmission system |
| US20170294847A1 (en) * | 2016-04-08 | 2017-10-12 | Delta Electronics (Shanghai) Co., Ltd. | Pre-charge control method |
-
2017
- 2017-10-13 CN CN201710950147.0A patent/CN109672205A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618305A (en) * | 2013-11-27 | 2014-03-05 | 南方电网科学研究院有限责任公司 | Method for live access of multi-terminal flexible direct-current power transmission system by using isolating switch |
| CN103683282A (en) * | 2013-12-13 | 2014-03-26 | 荣信电力电子股份有限公司 | Method for paralleling shutdown converter stations in multi-terminal flexible direct current transmission system |
| CN104184138A (en) * | 2014-08-21 | 2014-12-03 | 南京南瑞继保电气有限公司 | Method for one end of multi-end flexible direct-current power transmission system to exit from operation system |
| CN105703385A (en) * | 2014-11-27 | 2016-06-22 | 南京南瑞继保电气有限公司 | Start-stop method of multi-terminal flexible direct current power transmission system |
| US20170294847A1 (en) * | 2016-04-08 | 2017-10-12 | Delta Electronics (Shanghai) Co., Ltd. | Pre-charge control method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391669A (en) * | 2019-07-24 | 2019-10-29 | 国网冀北电力有限公司检修分公司 | A kind of change of current valve control system |
| CN115333139A (en) * | 2022-07-07 | 2022-11-11 | 中国长江三峡集团有限公司 | Flexible direct current transmission control method, electronic equipment and medium |
| CN115333139B (en) * | 2022-07-07 | 2024-09-20 | 中国长江三峡集团有限公司 | Flexible direct-current transmission control method, electronic equipment and medium |
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Application publication date: 20190423 |