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Series compensation application method for changing operating modes

An application method and series compensation technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, AC network circuits, etc., can solve the problem that controllable series compensation cannot adjust the series compensation for a long time, and achieve investment The effect of maximizing benefits, improving transmission capacity and balancing power flow

Active Publication Date: 2015-04-29
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In view of the unbalanced channel power flow, the controllable series compensation cannot adjust the series compensation degree for a long time to improve the power flow distribution

Method used

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  • Series compensation application method for changing operating modes
  • Series compensation application method for changing operating modes
  • Series compensation application method for changing operating modes

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Embodiment Construction

[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0041] A method for applying series compensation for operating mode changes, the application method comprising the following steps:

[0042] Step 1: Determine the maximum capacity of adding series compensation to the line;

[0043] Step 2: Adjust the access level of transmission channels and nearby power sources and loads, and analyze the impact of reducing the degree of series compensation on power flow distribution and transmission capacity;

[0044] Step 3: Determine the segment number and capacity of series compensation;

[0045] Step 4: Analyze the impact of the series compensation segmented into the system on the voltage distribution and transient stability level of the transmission system, and determine the application scheme of the series compensation.

[0046] Described step 1 comprises the following steps:

[0047] Step 1-1: Establish a power tra...

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Abstract

The invention provides a series compensation application method for changing operating modes, the application method includes the following steps of determining the maximum capacity of series compensation added to lines; adjusting access levels of power transmission channels, power supplies and loads in near regions, and analyzing the influence of reduced series compensation degrees on load flow distribution and power transmission abilities; determining the subsection number and capacity of the series compensation degrees; and analyzing the influence of the series compensation on voltage distribution of a power transmission system and transient stability when the series compensation is accessed to the system in subsections, and determining a series compensation application solution. According to the series compensation application method for changing the operating modes, when the series compensation is applied in the power transmission system, the compensation degrees of the series compensation can be flexibly changed, each stage of the compensation degrees can be stably operated for a long time, various operating modes of power supply changes and load changes can be adapted, the load flow can be effectively balanced, the power transmission capacity of the channels is improved, the function of the series compensation is fully exerted, and the construction investment efficiency of the power transmission channels and the series compensation device is maximized.

Description

technical field [0001] The invention belongs to the field of electric power systems, and in particular relates to a method for applying series compensation for changing operation modes. Background technique [0002] Series compensation technology is to connect capacitors in series to the transmission line, and shorten the equivalent electrical distance of the line through the impedance compensation method of capacitor capacitive reactance to compensate the inductive reactance of the transmission line, reduce the voltage drop and power angle difference caused by power transmission, thereby improving the power transmission system. Dynamic and transient stability margins create favorable conditions for high-power transmission. [0003] As a relatively mature and reliable technology, series compensation technology has been applied in power system for more than 80 years. Foreign research on fixed series compensation technology began in 1928 in the 33kV system of the New York pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/18
CPCY02E40/30
Inventor 申洪孙强李晶尚勇魏磊孙玉娇刘娟楠王雅婷
Owner CHINA ELECTRIC POWER RES INST
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