Method and system for realizing real-time automatic compensation of voltage and reactive power of substation

An automatic compensation and substation technology, applied in the system field, can solve the problems of increasing the number of tap adjustments and unfavorable safe operation of transformers, and achieve the effects of reducing the number of operations, avoiding repeated shifting, and ensuring voltage quality

Active Publication Date: 2012-08-22
国网重庆市电力公司綦江供电分公司 +1
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Problems solved by technology

The above situation increases the number of adjustments of the tap, which is very unfavorable for the safe operation of the transformer.

Method used

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  • Method and system for realizing real-time automatic compensation of voltage and reactive power of substation
  • Method and system for realizing real-time automatic compensation of voltage and reactive power of substation
  • Method and system for realizing real-time automatic compensation of voltage and reactive power of substation

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Embodiment Construction

[0070] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.

[0071] Overview of related concepts:

[0072] 1. The principle of reactive power compensation: the voltage of the power system is closely related to the reactive power of the system, and the balance of reactive power is directly related to the stability of the voltage. The condition of reactive power balance in the system is the reactive power that can be emitted by the reactive power supply in the system It should be greater than or equal to the sum of the reactive power required by the load and the grid. The balance relationship of reactive power in the power system is shown in formula (1):

[0073] Q h =Q gc -Q f -Q s (1)

[0074] where Q gc It is th...

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Abstract

The invention discloses a method for realizing real-time automatic compensation of the voltage and reactive power of a substation, wherein the characteristics of various reactive compensation and voltage optimization methods are analyzed according to the grid reactive power equilibrium principle and the reactive compensation rule; and in combination with the actual situations of a smart grid and an operating team, new automatic compensation manner and policy superior to the traditional 9-cell dynamic reactive compensation algorithm are proposed; thereby a foundation is laid for the construction of the smart grid and the implementation of an operating team, heavy operation, regulation and control integrated production manner.

Description

technical field [0001] The invention relates to a method for realizing real-time automatic compensation of substation voltage and reactive power, and also relates to a system. Background technique [0002] Voltage is one of the important indicators of grid power quality. Voltage quality has a direct impact on grid stability, safe operation of power equipment, line loss, industrial and agricultural safety, product quality, unit power consumption, and people's daily electricity consumption. In high-voltage power transmission, voltage and reactive power are directly related, and the magnitude of reactive power determines the level of voltage. The control of voltage and reactive power in a substation is a multi-objective and multi-constrained optimization problem, which cannot be completely described by analytical methods. The solution is to use engineering practical algorithms to make control decisions. In this process, first Collect data from the automation system of the disp...

Claims

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Application Information

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IPC IPC(8): H02J3/16H02J3/18
CPCY02E40/30
Inventor 李历波席世友任江波康鸿飞
Owner 国网重庆市电力公司綦江供电分公司
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