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Column-mounted reactive power compensation control method and device for AC transmission lines

A transmission line, compensation control technology, applied in the direction of reactive power compensation, reactive power adjustment/elimination/compensation, AC network voltage adjustment, etc. The effect of exceeding limits, improving reliability, and improving robustness

Active Publication Date: 2021-04-13
XIAN XD POWER CAPACITOR CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this control strategy is more reasonable in substation compensation, but under the condition of line compensation, the compensation device is to compensate the reactive power consumed by the line during the current transmission process, and this compensation method cannot make the line useless. Optimum power flow

Method used

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  • Column-mounted reactive power compensation control method and device for AC transmission lines
  • Column-mounted reactive power compensation control method and device for AC transmission lines
  • Column-mounted reactive power compensation control method and device for AC transmission lines

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Embodiment Construction

[0093] In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.

[0094] As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardw...

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Abstract

The present invention provides a pole-mounted reactive power compensation control method and device for AC transmission lines. The method includes: calculating the reactive power compensation amount according to the compensation point current, the compensation point voltage and line parameters; The input capacitor capacity; according to the pre-acquired input capacitor capacity-estimated voltage rise value correspondence relationship and the compensation point voltage, the estimated compensation point voltage after inputting the capacitor of this capacity is obtained; judge whether the estimated compensation point voltage exceeds the limit ; If not, generate a control command according to the calculated capacitor capacity that needs to be put in, so that the reactive power compensation device on the column can put in a capacitor of this capacity according to the control command, wherein, when calculating the amount of reactive power compensation, the line parameters are considered for synthesis control, can obtain the best compensation capacity, and make the reactive power flow of the line reach the best state.

Description

technical field [0001] The present invention relates to the field of electric power, and in particular, to a method and a device for controlling reactive power compensation on a column for an AC transmission line. Background technique [0002] The line transmission in the AC power system includes two parts: active power and reactive power. No matter which part is transmitted, it will cause the power loss of the power grid, such as formula (1), P Loss is the power loss of line transmission, P is the active power transmitted by the line, Q is the reactive power transmitted by the line, U is the line voltage, and R is the line impedance. [0003] [0004] Among them, the active power part is the energy actually used to do work, and the reactive power refers to the presence of inductive or capacitive elements in the AC system, the voltage at both ends of which is 90° out of phase with the current flowing through it, which does not consume energy, but does not consume energy. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/18H02J3/16
CPCH02J3/16H02J3/18Y02E40/30
Inventor 雷梅梅姚成杨永刚何晓靓邓军锋
Owner XIAN XD POWER CAPACITOR CO LTD
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