Method for regulating static reactive compensator of power transmission system

A technology for static reactive power compensation and power transmission system, which is applied in flexible AC power transmission systems, reactive power adjustment/elimination/compensation, etc. problem, to reduce mutual influence and suppress power oscillation

Active Publication Date: 2008-10-01
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

[0011] The purpose of the present invention is to propose a static var compensator adjustment method for a power transmission system, which is used to overcome the large mutual influence between the voltage regulator and the auxilia

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  • Method for regulating static reactive compensator of power transmission system
  • Method for regulating static reactive compensator of power transmission system
  • Method for regulating static reactive compensator of power transmission system

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[0034] A detailed description will be given below in conjunction with the drawings and specific embodiments of the present invention.

[0035] The embodiment of the present invention specifically includes the following steps:

[0036] Step 1. In order to achieve steady-state reactive voltage control, obtain the reactive power output Q of the TCR branch according to the current operating voltage of the transmission system 0 ,

[0037] The step 1 specifically includes:

[0038] Step 11. Calculate the average operating voltage of the transmission system during a long operating period (for example, set 20 minutes);

[0039] Step 12. Determine whether the average operating voltage exceeds the qualified range of the voltage to be controlled. If it exceeds, calculate the voltage difference between the average operating voltage and the qualified range of the voltage to be controlled; otherwise, the process ends;

[0040] Step 13. Determine the steady-state reactive power output value acco...

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Abstract

The present invention relates to an application of the static reactive compensator, concretely presents a method for regulating the static reactive compensator used by the power transmission system. The method comprises the following procedures: regulating the reactive power output Q0 of the TCR branch line according the current operation voltage of the power transmission system, regulating the reactive power output delta Q of the TCR branch line according to the signal reflecting the oscillating mode of the power transmission system, inputting the total reactive power outputting signal which is obtained after the overlapping of the reactive power output Q0 and the reactive power output delta Q into a trigger pulse circuit, and realizing the regulation to the SVC through the regulation to the trigger pulse circuit. The method according to the invention realizes the combination control and regulation to the stable reactive voltage and static stability of the power transmission system, and reduces the interrelationship caused by the combination SVC control and regulation by the traditional voltage regulation strategy and auxiliary control strategy. Not only that the stable voltage of the power transmission system and the reactive power output are in the qualified operation range is realized, but also the power oscillation of the power transmission system is effectively inhibited.

Description

technical field [0001] The invention relates to parallel reactive power compensation technology, in particular to an adjustment method for a static reactive power compensator used in a power transmission system. Background technique [0002] In the power transmission system, the use of parallel reactive power compensation technology not only improves the voltage support, but also controls the voltage of the power transmission system to operate within an appropriate range. dynamic stability. [0003] SVC (Static Var Compensator) is a parallel static var power generator or absorber, through the control and adjustment of SVC to achieve adjustable reactive power output, thereby suppressing the power oscillation of the transmission system and improving the power transmission system The voltage is stable to ensure the safe and stable operation of the power transmission system. [0004] Such as figure 1 As shown, the SVC includes a TCR branch and an LC filter branch, wherein the...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCY02E40/12Y02E40/10
Inventor 武守远汤海雁赵刚李长宇
Owner CHINA ELECTRIC POWER RES INST
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