Start control method for accessing synchronous compensator in high-voltage direct-current transmission inversion side

A technology of high-voltage direct current transmission and phase adjustment, which is applied in the direction of AC network circuit, AC network voltage adjustment, electrical components, etc., can solve the problems that voltage compensation has not been studied, and achieve stable state, strong operability and low complexity Effect

Active Publication Date: 2018-04-20
STATE GRID JIANGSU ELECTRIC POWER CO LTD MAINTENANCE BRANCH +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no research on the voltage compensation of the synchronous condenser to the AC-DC transmission system, especially the control method of the synchronous condenser for voltage compensation

Method used

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  • Start control method for accessing synchronous compensator in high-voltage direct-current transmission inversion side
  • Start control method for accessing synchronous compensator in high-voltage direct-current transmission inversion side
  • Start control method for accessing synchronous compensator in high-voltage direct-current transmission inversion side

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] The invention relates to a start-up control method for connecting a synchronous condenser to an inverter side of a high-voltage direct current transmission, and the steps are as follows:

[0031] Step 1. Build a synchronous condenser to start the grid-connected circuit. Such as figure 1 As shown, the synchronous condenser starts the grid-connected circuit, including: synchronous condenser (Sync_Cond), excitation control system, initial voltage generator, sequence controller, AC three-phase transformer (TF), HVDC inverter side, The AC outlet end of the synchronous condenser is connected to the AC three-phase transformer, and the other side of the AC three-phase transformer is connected to the inverter side of the high-voltage direct current transmission. The rotor side of the synchronous condenser is connected to the timing controller, and the other side of the...

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Abstract

The invention discloses a start control method for accessing a synchronous compensator in a high-voltage direct-current transmission inversion side. By using the method, an excitation input value of the synchronous compensator at a start moment is changed, and after a system reaches a stable state at the first time, an exciter is used to carry out excitation input on the synchronous compensator. Adifference between a traditional synchronous compensator start method and the method of the invention is that the excitation input value at the start moment is changed. By using the start control method, a voltage fluctuation of a port when the synchronous compensator is started can be effectively reduced and active power consumed when the synchronous compensator is started and generated reactivepower can be decreased so that smooth start of the synchronous compensator can be realized.

Description

technical field [0001] The invention relates to a start-up control method for connecting a synchronous condenser to an inverter side of a high-voltage direct current transmission, and belongs to the technical field of start-up control of a synchronous condenser. Background technique [0002] With the maturity of long-distance direct current transmission technology, the economy of high voltage direct current transmission has been widely recognized. The country is currently vigorously supporting and promoting the construction of high voltage direct current transmission systems. At the same time, the capacity of direct current transmission systems is also growing rapidly. The safe operation of the DC transmission system requires that the AC grid can provide sufficient reactive power. Compared with the existing static var compensation methods, the advantage of using a synchronous condenser for reactive power compensation is that its reactive power output is not affected by change...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/16
CPCH02J3/16H02J3/1885Y02E40/30
Inventor 汤晓峥汪永坤李修金刘一丹施琳王抗田涛喻春雷单哲张志宏张敬王瑶王谱宇刘兴党睿顾伟
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD MAINTENANCE BRANCH
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