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Pole-mounted reactive compensation control method and device for alternating-current transmission line

A transmission line, compensation control technology, applied in the direction of reactive power compensation, reactive power adjustment/elimination/compensation, AC network voltage adjustment, etc., can solve the problem that the reactive power flow of the line cannot reach the best state, and achieve the prevention of voltage Effects of limit violation, improved robustness, and improved reliability

Active Publication Date: 2020-03-24
XIAN XD POWER CAPACITOR CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Pole-mounted reactive compensation control method and device for alternating-current transmission line
  • Pole-mounted reactive compensation control method and device for alternating-current transmission line
  • Pole-mounted reactive compensation control method and device for alternating-current transmission line

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Embodiment Construction

[0093] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0094] Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermor...

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Abstract

The invention provides a pole-mounted reactive compensation control method and a device for an alternating-current transmission line. The method comprises the steps of calculating reactive compensation amount according to compensation point current, compensation point voltage and line parameters; obtaining the capacity of a capacitor needing to be input according to the reactive compensation amount; obtaining an estimated compensation point voltage after the capacitor with the capacity is input according to a pre-obtained input capacitor capacity-estimated voltage rise value corresponding relation and the compensation point voltage; judging whether the estimated compensation point voltage is out of limit; and if not, generating a control instruction according to the calculated capacity ofthe capacitor needing to be input, so that the pole-mounted reactive power compensation device inputs the capacitor with the capacity according to the control instruction, line parameters are considered for comprehensive control when the reactive power compensation amount is calculated, the optimal compensation capacity can be obtained, and the reactive power flow of the line reaches the optimal state.

Description

technical field [0001] The present invention relates to the field of electric power, in particular to a pole-mounted reactive power compensation control method and device for AC transmission lines. 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 grid, such as formula (1), P Loss 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 inductance or capacitance components in the AC system, the voltage at both ends of the AC system has a 90° phase difference with the current flowing, and does not consume energy, but it is different from The reactive power part of the power exchanged by the power...

Claims

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Application Information

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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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