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Field verification method of high-capacity flexible alternating-current power transmission system control strategy

A flexible AC transmission and control strategy technology, applied in the field of verification, can solve the problems of control strategy field verification methods that have not yet been reported, lack of engineering implementation, etc.

Active Publication Date: 2014-04-23
STATE GRID CORP OF CHINA +2
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  • Abstract
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  • Claims
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Problems solved by technology

There have been many studies on the coordinated control strategy of multi-FACTS systems before, but due to the lack of engineering implementation, the field verification method of the control strategy has not been reported.

Method used

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  • Field verification method of high-capacity flexible alternating-current power transmission system control strategy

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Embodiment Construction

[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0039] The present invention provides a large-capacity flexible AC transmission system control strategy on-site verification method, the method includes the following steps:

[0040] Step 1: Determine the initial state of the basic grid operation and the value of the FACTS control strategy;

[0041] In the step 1, the initial state of the basic grid operation is referred to as A, the bus voltage is 755kV, the SVC full output is 360MVar, and the controllable high reactance of the double-circuit line bus is all 100%; the flexible AC transmission system control strategy fixed value is referred to as It is D, and the FACTS control strategy is that after the bus voltage exceeds the limit, the SVC operates to full output. If the bus voltage still exceeds the limit, the controllable high resistance of the single-circuit line will be automatically increased by one ge...

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Abstract

The invention provides a field verification method of a high-capacity flexible alternating-current power transmission system control strategy. The field verification method covers three aspects, i.e. transition from an initial method to a testing method, disturbance of FACTS element action to grid voltage during testing and control strategy triggering, can coordinately determine a grid initial operating state, a grid operating state before strategy verification testing, a testing target grid operating state, a control strategy fixed value and grid disturbance operation, and can realize full-process control from the grid initial operating state to the testing target operating state. The field verification method of the high-capacity flexible alternating-current power transmission system control strategy can be used for performing field verification to coordinate control strategy of various high-capacity FACTS systems, can check whether elements can correctly act according to control strategy preset logics and conditions or not and can provide a basis for the stable operation of a power system.

Description

technical field [0001] The invention relates to a verification method, in particular to a field verification method of a large-capacity flexible AC power transmission system control strategy. Background technique [0002] With the increasing application of flexible alternating current transmission system (FACTS) and the increasing capacity of components, whether the FACTS system can operate correctly according to the preset conditions and logic of the control strategy has an important impact on the safe and stable operation of the power system. The on-site verification of the control strategy is the last actual operation test before the equipment is officially put into operation, which directly determines whether the FACTS system can be put into operation normally. [0003] The second channel of the Northwest-Xinjiang interconnection has been completed and put into operation, and the world's 750kV voltage level large-capacity, multi-type and multi-FACTS system has been put i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06F17/50
CPCY02E60/76Y04S40/22Y02E60/00
Inventor 罗煦之张健郑彬王安斯
Owner STATE GRID CORP OF CHINA
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