CN108574287A - A kind of power system reactive power compensation place sort method based on network structure - Google Patents
A kind of power system reactive power compensation place sort method based on network structure Download PDFInfo
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- CN108574287A CN108574287A CN201810465398.4A CN201810465398A CN108574287A CN 108574287 A CN108574287 A CN 108574287A CN 201810465398 A CN201810465398 A CN 201810465398A CN 108574287 A CN108574287 A CN 108574287A
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- node
- voltage
- sequence
- reactive power
- compensation
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1871—Methods for planning installation of shunt reactive power compensators
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- 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
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of power system reactive power compensation place sort method based on network structure, including step：1）It is by multiport Thevenin's equivalence, multinode power grid is equivalent at two impedance of voltage hazard node i, two node power grid；Calculate the correlation metric between reflecting voltage risk symptoms node i and each candidate compensation buses；2）It is ranked up by the sequence of correlation metric from big to small, is improved the sequence in the control of reactive power compensating place of voltage hazard node i voltage stability.The present invention is capable of the sequence of accurate computing system the control of reactive power compensating, quickly improves the voltage stability of system.
Description
Technical field
The present invention relates to technical field of power systems more particularly to a kind of power system reactive power compensations based on network structure
Place sort method.
Background technology
In current power system, Transient Voltage Stability index or sensitivity analysis is mainly taken to be used as with reference to according to right
The control of reactive power compensating place is assessed, and more complicated algorithm, larger calculation amount is generally required during this, to all kinds of
Technology has higher requirement.Therefore, it is necessary to design a kind of convenient and simple idle control place sortord, to improve electric power
The efficiency of System Reactive Power control, this is of great significance the analysis and solution formulation of electric system.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of power system reactive power compensation place row based on network structure
Sequence method surveys network impedance information and voltage using the equivalent principles of multiport Dai Weinan according to wide area dynamic information system
Amplitude calculates the index in the unstable place of reflecting voltage and candidate compensation buses close relation degree, pass throughSequence
Screening obtains effective reactive-load compensation sequence.
To achieve the above object, the technical scheme is that：A kind of power system reactive power compensation based on network structure
Place sort method surveys the voltage of network impedance information and the front and back candidate compensation buses of control according to wide area dynamic information system
Amplitude is ranked up reactive-load compensation place, specifically includes following steps：
Step S1：Assuming that node i is voltage hazard node, by multiport Thevenin's equivalence, by the equivalent Cheng Jie of multinode power grid
Two impedances of point i, two node power grid calculates the correlation metric between reflecting voltage risk symptoms node i and each candidate compensation buses,
Wherein,For the conjugation of node i network impedance inverse；For the mutual impedance of candidate compensation buses j and node i
Conjugation；Voltage magnitude before being controlled for candidate compensation buses j,For the voltage magnitude after candidate compensation buses j controls；
Step S2：It is ranked up by the sequence of correlation metric from big to small, is improved voltage hazard node i voltage stability
The control of reactive power compensating place sequence.
Compared with prior art, the present invention has advantageous effect：Present invention only requires the impedance informations for knowing partial electric grid
Front and back information of voltage, can obtain the sequence in effective reactive-load compensation place with the control of each candidate compensation buses.Compared to existing
The method of method, this method are capable of the sequence of accurate computing system the control of reactive power compensating, quickly improve the voltage stability of system.
Description of the drawings
Fig. 1 is a kind of flow signal of power system reactive power compensation place sort method based on network structure of the present invention
Figure；
Fig. 2 is the IEEE14 node diagrams of the embodiment of the present invention；
Fig. 3 is two impedance of voltage hazard node i, the two node power grid schematic diagram of the embodiment of the present invention.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of power system reactive power compensation place sort method based on network structure, according to wide area dynamic
Information system surveys the voltage magnitude of network impedance information and the front and back candidate compensation buses of control, arranges reactive-load compensation place
Sequence specifically includes following steps：
Step S1：Assuming that node i is voltage hazard node, by multiport Thevenin's equivalence, by the equivalent Cheng Jie of multinode power grid
Two impedances of point i, two node power grid calculates the correlation metric between reflecting voltage risk symptoms node i and each candidate compensation buses,
Wherein,For the conjugation of node i network impedance inverse；For the mutual impedance of candidate compensation buses j and node i
Conjugation；Voltage magnitude before being controlled for candidate compensation buses j,For the voltage magnitude after candidate compensation buses j controls；
Step S2：It is ranked up by the sequence of correlation metric from big to small, is improved voltage hazard node i voltage stability
The control of reactive power compensating place sequence.
Calculated examples select IEEE14 node systems, as shown in Fig. 2, at certain moment, occur disconnected between node 13 and node 14
Line, node 14 become voltage hazard node.
The first step：By Thevenin's equivalence, complex electric network is equivalent at two impedance of node i, two node power grid, and result is such as
Shown in Fig. 3.
Second step：Calculate the index of reflecting voltage risk symptoms node and reactive-load compensation place substantial connection, result such as table
Shown in 1.
Third walks：The index is ranked up according to sequence from big to small, effective reactive-load compensation place is obtained and is ordered as saving
Point 14, node 9, node 10, node 11, node 4, node 5.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (1)
1. a kind of power system reactive power compensation place sort method based on network structure, which is characterized in that according to wide area dynamic
Information system surveys the voltage magnitude of network impedance information and the front and back candidate compensation buses of control, arranges reactive-load compensation place
Sequence specifically includes following steps：
Step S1：Assuming that node i is voltage hazard node, by multiport Thevenin's equivalence, by the equivalent Cheng Jie of multinode power grid
Two impedances of point i, two node power grid calculates the correlation metric between reflecting voltage risk symptoms node i and each candidate compensation buses,
Wherein,For the conjugation of node i network impedance inverse；For the mutual impedance of candidate compensation buses j and node i
Conjugation；Voltage magnitude before being controlled for candidate compensation buses j,For the voltage magnitude after candidate compensation buses j controls；
Step S2：It is ranked up by the sequence of correlation metric from big to small, is improved voltage hazard node i voltage stability
The control of reactive power compensating place sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810465398.4A CN108574287A (en) | 2018-05-16 | 2018-05-16 | A kind of power system reactive power compensation place sort method based on network structure |
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| CN201810465398.4A CN108574287A (en) | 2018-05-16 | 2018-05-16 | A kind of power system reactive power compensation place sort method based on network structure |
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| CN108574287A true CN108574287A (en) | 2018-09-25 |
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| CN201810465398.4A Pending CN108574287A (en) | 2018-05-16 | 2018-05-16 | A kind of power system reactive power compensation place sort method based on network structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117215205A (en) * | 2023-11-09 | 2023-12-12 | 国网经济技术研究院有限公司 | DC system control parameter analysis method based on decision tree and ISS theory |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474992A (en) * | 2013-10-08 | 2013-12-25 | 东南大学 | Real-time on-line identification criterion of electric system node voltage steady state |
| CN106026118A (en) * | 2016-05-26 | 2016-10-12 | 国家电网公司 | Power grid dynamic reactive compensation node selection method based on node voltage recovery indexes |
| CN106532727A (en) * | 2016-12-13 | 2017-03-22 | 国网北京市电力公司 | Configuration method and device of installation points of dynamic reactive power compensator |
| CN107134799A (en) * | 2017-04-19 | 2017-09-05 | 国家电网公司 | A kind of extra-high voltage grid transverter reactive configuration method based on short-circuit ratio |
-
2018
- 2018-05-16 CN CN201810465398.4A patent/CN108574287A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474992A (en) * | 2013-10-08 | 2013-12-25 | 东南大学 | Real-time on-line identification criterion of electric system node voltage steady state |
| CN106026118A (en) * | 2016-05-26 | 2016-10-12 | 国家电网公司 | Power grid dynamic reactive compensation node selection method based on node voltage recovery indexes |
| CN106532727A (en) * | 2016-12-13 | 2017-03-22 | 国网北京市电力公司 | Configuration method and device of installation points of dynamic reactive power compensator |
| CN107134799A (en) * | 2017-04-19 | 2017-09-05 | 国家电网公司 | A kind of extra-high voltage grid transverter reactive configuration method based on short-circuit ratio |
Non-Patent Citations (1)
| Title |
|---|
| FUYUAN HUANG 等: ""A grid-side reactive power control strategy for highly offshore wind power penetrated systems"", 《JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117215205A (en) * | 2023-11-09 | 2023-12-12 | 国网经济技术研究院有限公司 | DC system control parameter analysis method based on decision tree and ISS theory |
| CN117215205B (en) * | 2023-11-09 | 2024-02-06 | 国网经济技术研究院有限公司 | DC system control parameter analysis method based on decision tree and ISS theory |
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Application publication date: 20180925 |
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