TCR type SVC voltage control method for transformer substation

A voltage control method and technology of voltage control, applied in AC network voltage adjustment, flexible AC transmission system, reactive power compensation, etc., can solve the problem of SVC voltage without separate compensation bus, avoid frequent switching and improve stability , strong practical effect
CN101330214BInactive Publication Date: 2010-10-20ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO
Publication Date
2010-10-20
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a TCR type SVC voltage control method used in a transformer substation. The method comprises the following steps: the control objective fixed value as well as the adjusting dead area of 220 / 500 kV voltage and the limit value as well as the TCR power output upper and lower limit values of 10 / 35 kV voltage are set respectively; the 220 / 500 kV voltage and the 10 / 35 kV voltageare measured and judged; aiming at the different 220 / 500 kV and 10 / 35 kV voltages, different TCRs as well as the adjusting order and the adjusting method of a capacitive compensating branch are adopted. The method can effectively integrates the level of the 10 / 35 kV voltage while controlling the 220 / 500 kV voltage of the transformer substation, thereby avoiding the frequent switch of the capacitive compensating branch, considering the demands of various complicated working conditions, and having wider applicability; at the same time, a self-regulating factor fuzzy controller is adopted to control the TCR output, and an error weighting coefficient which automatically adjusts according to the error magnitude is introduced to satisfy the demands of different control stages, thereby improvingthe whole control effect.
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Description

Technical field

[0001] The invention relates to a TCR-type SVC voltage control method for substations, in particular to a TCR-type SVC voltage control method that takes the 220 / 500kV voltage of the substation as the control target and takes into account the 10 / 35kV voltage adjustment. Background technique

[0002] Reactive power is very important for the operation of the power supply system and the load. With the development of power systems, the demand for fast dynamic compensation of reactive power is increasing. The traditional reactive power dynamic compensation device is a synchronous camera, but its loss and noise are large, operation and maintenance are complicated, and the response speed is slow. In recent years, it has been gradually replaced by a static reactive power compensation device (SVC). Early SVCs were mainly of the saturable reactor (SR) type, but because their cores needed to be magnetized to a saturated state, the loss and noise were also large, and there we...

Claims

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