Coordination control method for master station AVC system and station end static var compensator
A technology of static reactive power compensation and coordinated control, which is used in reactive power compensation, reactive power adjustment/elimination/compensation, flexible AC transmission systems, etc., which can solve the problem that static reactive power compensation devices cannot accurately track large grid voltage reactive power Compensation needs, etc.
Pending Publication Date: 2021-02-02
国网四川省电力公司超高压分公司
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Problems solved by technology
[0004] In order to solve the problem that the static var compensation device cannot accurately track the voltage reactive power compensation demand of the large power grid in real time, the invention provides a coordinated control method for the main station AVC system and the station-side static var compensation device
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Embodiment 1
[0110] Such as figure 1 As shown, in this embodiment, the coordinated control method between the master station AVC system and the station-side static var compensation device includes the following steps:
[0111] Step 1: The station-side static var compensation device SVC is based on the collected reactive power output of the current thyristor-controlled reactor TCR, the current bus voltage, and the operating status of the fixed capacitor FC and the fixed reactor FR of the station-side static var compensation device SVC, The on-load voltage regulation of the main transformer is adjustable, and the adjustment will not cause the bus voltage to exceed the limit under the current operating state, and the adjustment frequency of the equipment meets the requirements as constraints, and is optimized by establishing the maximum output (inductive reactive power, capacitive reactive power) The objective function, and then calculate the maximum thyristor-controlled reactor TCR of the st...
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The invention discloses a master station AVC (Automatic Voltage Control) system and station end static var compensator coordination control method. The method comprises the following steps that S1, astation end static var compensator SVC calculates increasable reactive power and reducible reactive power of a thyristor control reactor TCR at the moment t according to a reactive power compensationoperation condition, increasable reactive power, reducible reactive power and main transformer on-load voltage regulation adjustable gears of a station end static var compensator SVC are calculated; S2, the station end transmits the data calculated in the step S1 to a master station AVC system; S3, the master station AVC system calculates an SVC optimal output value of a station end static var compensator according to the received data and the whole network voltage reactive power by taking the minimum whole network active power loss as a target; S4, the main station transmits the optimal output value calculated in S3 to a station end static var compensator SVC; and S5, the station-end static var compensator SVC performs output optimization control on the station-end static var compensatorSVC by taking the minimum output deviation as a control target according to the received optimal output value.
Description
technical field [0001] The invention relates to a reactive power compensation method of a substation, in particular to a coordinated control method for an AVC system of a master station and a static reactive power compensation device at a station end. Background technique [0002] At the ultra-high voltage power station terminal, the static var compensator (SVC) is installed on the low-voltage side busbar of the ultra-high voltage substation transformer, which is usually composed of a thyristor controlled reactor (TCR) and a fixed capacitor (fixed capacitor, FC), fixed reactor (fixed reactor, FR) composition. The static var compensation device can quickly and smoothly adjust the reactive power compensation of the voltage, thereby stabilizing the voltage of the ultra-high voltage grid system, enhancing the transmission capacity of the grid, promoting voltage recovery after a fault, and suppressing system oscillation. [0003] The existing ultra-high voltage grid voltage cont...
Claims
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Login to View More IPC IPC(8): H02J3/16H02J3/18G06F30/20G06F111/04
CPCH02J3/16H02J3/18G06F30/20G06F2111/04Y02E40/10Y02E40/30
Inventor 李恒强程浪雷汉樟肖启繁刘玮王骏陈文斌廖钧李维蒋星燃张科冯若栩何岩珂任荣铸金波李政谭鑫媛
Owner 国网四川省电力公司超高压分公司