CN102255322A - Method for interactively iterative control of voltage reactive power of regional power grid - Google Patents
Method for interactively iterative control of voltage reactive power of regional power grid Download PDFInfo
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- CN102255322A CN102255322A CN2011101997945A CN201110199794A CN102255322A CN 102255322 A CN102255322 A CN 102255322A CN 2011101997945 A CN2011101997945 A CN 2011101997945A CN 201110199794 A CN201110199794 A CN 201110199794A CN 102255322 A CN102255322 A CN 102255322A
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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
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- 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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Abstract
The invention discloses for a method for interactively iterative control of voltage reactive power of a regional power grid. By performing iterative analysis calculation on basic information such as a voltage which is transmitted to a control center from the regional power grid, reactive compensation, power angle and a relay protection device, an instruction of controlling the voltage reactive power of the current regional power grid is obtained. The method is simple and quick.
Description
Technical field
The present invention relates to the idle technical field of power system voltage, the interactive iteration control method of particularly a kind of area power grid voltage power-less.
Background technology
Voltage is the main quality index of electric energy.Quality of voltage is great to the safe operation influence of power grid operation and power equipment, and reactive power is a key factor that influences quality of voltage.Continuous expansion along with scale of power, the intensity of send out, transmission facility using is day by day near its limiting value, electrical network often operates in critical condition, the stability margin of electrical network is reduced, power factor (PF) reduces, and the loss of supply transformer and conveying circuit raises, and electric power system voltage fluctuation, harmonic wave increase, power supplying efficiency reduction etc., the stable acid test that is faced with of the voltage of area power grid.Existing parser about voltage power-less as singular value decomposition method, feature structure analytic approach, P-U tracing analysis method, U-Q tracing analysis method, all is based on static voltage stability analysis.In the reality, the everyway of power system voltage stabilization and power system mesomeric state and dynamic characteristic has close ties, and voltage control, reactive power compensation and management, angle stability, relaying protection and control centre's operation etc. all will have influence on the voltage stability of system.How to take all factors into consideration, realize the voltage power-less control of online interaction, become the important topic that those skilled in the art urgent need will solve influencing each stable factor of voltage.
Summary of the invention
The present invention proposes the interactive iteration control method of a kind of area power grid voltage power-less,, obtain the control command of voltage power-less by iterative computation analysis to the electrical network master data.
The interactive iteration control method of area power grid voltage power-less of the present invention comprises step:
Analyze the electrical network master data;
Calculate the voltage power-less of various described electrical network master data correspondences respectively;
According to the idle order from small to large of corresponding voltage, various electrical network master datas are sorted;
According to institute's alignment preface, the voltage power-less under all electrical network master data actings in conjunction of iterative computation, controlled instruction.
Preferably, described electrical network master data comprises voltage, merit angle, the reactive power compensation of current system and the action message of relaying protection of area power grid.
The interactive iteration control method of area power grid voltage power-less of the present invention; essential informations such as the voltage by area power grid being transferred to control centre, reactive power compensation, merit angle, protective relaying device are carried out iterative analysis and are calculated; the instruction of controlled current area power grid voltage power-less, algorithm is simple, quick.
Description of drawings
Fig. 1 is the schematic flow sheet of the interactive iteration control method of area power grid voltage power-less of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with embodiment, but not as the foundation to the present invention's restriction.
The interactive iteration control method of area power grid voltage power-less of the present invention as shown in Figure 1, comprises the steps:
By iterative computation analysis, obtain the control command of voltage power-less to the electrical network master data.The master data of electrical network, be can detected area power grid voltage, merit angle, the reactive power compensation of current system, the action message of relaying protection.These data messages being carried out iterative analysis calculate, is earlier these unpacks to be come, and calculates the voltage power-less in area under the single situation, and the voltage stability index under each situation is sorted.Then from small to large, carry out voltage power-less once more and calculate corresponding control command according to voltage stability index.For arbitrary single situation, in case the instruction that is under control then can be considered executed instruction, and the voltage power-less of situation calculates after participating in.By a series of iterative computation, on the basis of previous step, remove redundant instruction at last, get and supply the control command of operations staff's reference to the end.Calculating the regional voltage power-less under the single situation, is to calculate at the voltage power-less that has only under a kind of situation of information.Voltage stability index under each situation is sorted, and this index is a sensitivity index.For arbitrary single situation,, then can be considered executed order in case obtained concrete reactive power compensation, regulate load tap changer, to the order that protective relaying device moves.Calculate by series of iterations at last, the instruction that obtains before is considered as executed order, calculate, obtain new instruction again thereby carry out voltage power-less.
The iteration interactive control method of area power grid voltage power-less specifically may further comprise the steps;
(a), data such as the voltage to being transferred to control centre, merit angle, reactive power compensation and management, relaying protection carry out taxonomic revision, are respectively info class A, info class B, info class C etc.;
(b), calculate the voltage power-less in area under the single situation, the voltage stability index under each single info class is sorted;
(c), iterative computation, on the basis of previous step, remove redundant instruction;
(d), judge whether to continue iteration, otherwise jump out iteration, the output result according to voltage stability index.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (2)
1. the interactive iteration control method of area power grid voltage power-less is characterized in that, comprises step:
Analyze the electrical network master data;
Calculate the voltage power-less of various described electrical network master data correspondences respectively;
According to the idle order from small to large of corresponding voltage, various electrical network master datas are sorted;
According to institute's alignment preface, the voltage power-less under all electrical network master data actings in conjunction of iterative computation, controlled instruction.
2. according to the interactive iteration control method of the described area power grid voltage power-less of claim 1, it is characterized in that described electrical network master data comprises voltage, merit angle, the reactive power compensation of current system and the action message of relaying protection of area power grid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110199794 CN102255322B (en) | 2011-07-15 | 2011-07-15 | Method for interactively iterative control of voltage reactive power of regional power grid |
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| CN 201110199794 CN102255322B (en) | 2011-07-15 | 2011-07-15 | Method for interactively iterative control of voltage reactive power of regional power grid |
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| CN102255322A true CN102255322A (en) | 2011-11-23 |
| CN102255322B CN102255322B (en) | 2013-01-30 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004023622A2 (en) * | 2002-09-03 | 2004-03-18 | Sureshchandra Patel | System of super super decoupled loadflow computation for electrical power system |
| CN101192754A (en) * | 2007-12-11 | 2008-06-04 | 中国电力科学研究院 | A realization method for integrated load model of distribution network in power system |
| CN101291061A (en) * | 2008-05-16 | 2008-10-22 | 南京南瑞继保电气有限公司 | Status estimating method for dynamic process of electrical power system |
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2011
- 2011-07-15 CN CN 201110199794 patent/CN102255322B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004023622A2 (en) * | 2002-09-03 | 2004-03-18 | Sureshchandra Patel | System of super super decoupled loadflow computation for electrical power system |
| CN101192754A (en) * | 2007-12-11 | 2008-06-04 | 中国电力科学研究院 | A realization method for integrated load model of distribution network in power system |
| CN101291061A (en) * | 2008-05-16 | 2008-10-22 | 南京南瑞继保电气有限公司 | Status estimating method for dynamic process of electrical power system |
Non-Patent Citations (1)
| Title |
|---|
| 熊虎岗等: "电力市场环境下的无功潮流优化", 《高电压技术》, vol. 33, no. 11, 30 November 2007 (2007-11-30), pages 169 - 173 * |
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Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Patentee after: Electric Power Research Institute of Guangdong Power Grid Co.,Ltd. Address before: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID Corp. |