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Tap-based reactive power compensation method, device and equipment

A compensation method and technology of compensation device, applied in reactive power compensation, reactive power adjustment/elimination/compensation, circuit devices, etc., can solve problems such as voltage fluctuation, reduce control costs, suppress the problem of excessive voltage fluctuation, and solve the problem of voltage fluctuation. The effect of fluctuations

Active Publication Date: 2020-01-31
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This application can realize voltage fluctuation only by adjusting the control mode of the tap, without adding any actual equipment, reducing control cost, and solving the technical problem of voltage fluctuation in the prior art

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  • Tap-based reactive power compensation method, device and equipment
  • Tap-based reactive power compensation method, device and equipment
  • Tap-based reactive power compensation method, device and equipment

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Embodiment Construction

[0033] 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 a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0034] The tap is the on-load voltage regulating device of the transformer. Through the regulating device, the secondary side voltage of the transformer can be adjusted. Steady-state voltage fluctuation is the rate of change of AC bus voltage caused by reactive power compensation equipment or cut-off. The DC transmission system is a system that uses DC for power t...

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Abstract

The invention discloses a tap-based reactive power compensation method, device and equipment. The method comprises the steps: adding a first-gear tap in a DC power transmission system when the DC power transmission system meets the conditions for input of a reactive power device and the reactive power exchange capacity of the DC power transmission system is greater than or equal to the first preset AC absorption reactive power exchange quantity and the operation angle meets the first preset range; and reducing the first-gear tap from the DC power transmission system when the DC power transmission system meets the conditions of cutting off the reactive power device and the absolute value of the reactive power exchange quantity of the DC power transmission system is greater than or equal tothe absolute value of the reactive power exchange quantity emitted by the first preset AC and the operation angle meets the second preset range. The voltage fluctuation can be realized by adjusting the control mode of the tap without additionally arranging any actual equipment so as to reduce the control cost and solve the technical problem of voltage fluctuation in the prior art.

Description

technical field [0001] The present application relates to the field of reactive power compensation, in particular to a tap-based reactive power compensation method, device and equipment. Background technique [0002] In order to ensure its own reactive power requirements, the DC transmission system often needs to be equipped with reactive power compensation devices. The reactive power required by the DC transmission system increases with the increase of the active power, so the reactive power equipment is required to be gradually put into or removed with the change of the active power. In the process of putting in or removing reactive power equipment, it will have an impact on the AC and DC system, causing fluctuations in the AC voltage. [0003] Usually, the power system has restrictions on the fluctuation of AC voltage and needs to meet the requirements of relevant standards for power quality. Therefore, when designing the group capacity of reactive power compensation equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/36H02J5/00
CPCH02J3/18H02J3/36H02J5/00H02J2003/365Y02E40/30Y02E60/60
Inventor 赵晓斌辛清明雷博郭龙许树楷
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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