Supervoltage magnetic-controlled shunt reactor excitation equipment

A kind of excitation equipment, magnetic control type technology, applied in the conversion equipment that can be converted into direct current without intermediate conversion, emergency protection circuit devices for limiting overcurrent/overvoltage, electrical components, etc., can solve the damage of excitation equipment, etc. problems, to achieve the effect of ensuring stability, solving shocks and improving reliability

Active Publication Date: 2008-11-05
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

[0005](2) Limit operating overvoltage
The excitation equipment is a low-voltage equipment, which is directly connected to the ultra-high voltage equipment. When the power grid or equipme

Method used

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  • Supervoltage magnetic-controlled shunt reactor excitation equipment
  • Supervoltage magnetic-controlled shunt reactor excitation equipment

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Embodiment Construction

[0024] In order to describe the structure, features and effects of the present invention in detail, the following preferred embodiments are given below together with the accompanying drawings.

[0025] As shown in Figure 1, the ultra-high voltage magnetron shunt reactor excitation equipment provided by the present invention includes a power supply system, a rectification system, a monitoring system and an overvoltage protection system. The structures of these systems and their dual structure configurations are described below describe:

[0026] (1) Power supply system: provide AC power for the excitation equipment. It is powered by two independent busbars (busbar I, busbar II), and each busbar comes from a different transformer, thus ensuring the reliability of power supply. Since the bus bar also has the characteristics of an approximate voltage source, it can also guarantee the stability of the excitation output. Two rectifier transformers ZLB1 and ZLB2 are respectively co...

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Abstract

The invention relates to an extra high pressure magnetron type shunt reactor excitation device, including a power system, a rectification system, a monitor system and an overvoltage protection system, wherein the power system is powered by a double-transformer; the rectification system includes two sets of independent sub-rectification systems connected with the power system through a diverter switch; the output end is provided with an output isolating switch and the two sub-rectification systems are respectively connected with the monitor system including a main monitor system with two parallel sub-monitor systems; the output signals on the output end of the rectification system are respectively input into the two sub-monitor systems, while the data of the overvoltage protection system are input into the main monitor system; the overvoltage protection system is arranged on the output end of the rectification system, with one end connected with the output bus of the rectification system, and the other end grounded. The invention adopts the double structure configuration, advances the reliability of the device, avoids the decommissioning of the shunt reactor and the whole circuit caused by the failure of part device of the excitation device, which is convenient to overhaul and maintain.

Description

technical field [0001] The invention relates to the technical field of controllable shunt reactors, in particular to an excitation device for an ultra-high voltage magnetically controlled shunt reactor. Background technique [0002] With the increasing scale of the power grid and the formation of large-scale interconnection, while the EHV and UHV transmission networks improve the power transmission capacity and reliability of the power grid, some problems will lead to an increase in the frequency and range of voltage changes in the power grid, and then This increases the difficulty of voltage regulation and control. Therefore, corresponding reactive power compensation technology and equipment are required. At present, the reactive power control of the transmission system is generally solved by ordinary ultra-high voltage shunt reactors, switchable low-voltage shunt reactors, generator phase modulation operation and "a small amount" of static var compensators (SVC). However...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02H9/04H02P13/00
Inventor 雷晰贾跟卯于坤山邓占锋王轩谢敏华
Owner CHINA ELECTRIC POWER RES INST
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