Iron core reactor having dual zero crossing control function

An iron-core reactor and zero-crossing technology, applied in the field of power transmission and transformation, can solve problems such as unacceptable, slow switching capacitor speed, and uncompensated load, achieving the effect of low energy consumption and low cost

Pending Publication Date: 2017-08-08
宁波宁变电力科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Capacitive compensation methods can no longer adapt to today's complex power grid systems. Common passive compensation equipment is prone to overcompensation and undercompensation for rapidly changing impact loads, and the compensation effect cannot reach the ideal state.
And there are several disadvantages as follows: 1. The compensation capacity of the fixed capacitor bank cannot be adjusted
2. Capacitors cannot be switched continuously and frequently, because the capacitor needs to discharge time
3. The response speed of switching capacitors is s...

Method used

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  • Iron core reactor having dual zero crossing control function
  • Iron core reactor having dual zero crossing control function

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as Figure 1 to Figure 2 As shown, a SVG+ core reactor hybrid dynamic reactive power compensation device with double zero-crossing adjustment function includes a bus 1, and the bus 1 is connected in parallel with an SVG compensation module 2, a reactor compensation module 3 and several capacitor compensations Module 4. A sampling circuit 4 is also connected to the bus 1, and the sampling circuit 4 is connected to a control module 5, and the control module 5 controls the SVG compensation module 2, the capacitance compensation module 4 and the reactance There are 3 converter compensation modules for reactive power compensation. The reactor compensation module 3 includes a reactor, and the reactor includes a common line 33 and a turn adjustment coil, and the turn adjustment coils are respectively a coarse adjustment coil 31...

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PUM

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Abstract

The invention discloses an iron core reactor having dual zero crossing control function, and relates to the technical field of power transmission. The iron core reactor includes turn adjusting coils and a common line. The turn adjusting coils are divided to coarse adjusting coils and fine adjusting coils. The coarse adjusting coils have a plurality of coarse adjusting groups. Each coarse adjusting group is provided with a coarse adjusting tap. The fine adjusting coils have a plurality of fine adjusting groups. Each fine adjusting group is provided with a fine adjusting tap thereon. The coarse adjusting taps and the fine adjusting taps are both connected to the public line. Each coarse adjusting group and each fine adjusting group is provided with a thyristor thereon. Compared with prior art, according to the invention, the iron core reactor has the following beneficial advantages: the iron core reactor can perform reactive compensation in a full dynamic manner, can replace a SVG apparatus; and compared with the SVG apparatus, the iron core reactor has less energy consumption, low cost, and has higher adjusting precision than the SVG apparatus.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation, in particular to a reactor. Background technique [0002] The reactive power compensation device is in an indispensable and very important position in the power supply system. In the power supply system, it can improve the power factor of the power grid, reduce the loss of power supply transformers and transmission lines, improve power supply efficiency, and improve the power supply environment. effect. The compensation methods currently used are mainly divided into two types: capacitive ordinary passive compensation equipment (such as FC and SVC) and full-dynamic static var generator (SVG). [0003] The capacitive compensation method can no longer adapt to today's complex power grid system. Ordinary passive compensation equipment is prone to overcompensation and undercompensation for rapidly changing impact loads, and the compensation effect cannot reach the ideal ...

Claims

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Application Information

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IPC IPC(8): H02J3/18H01F29/02H01F27/28
CPCH02J3/1821H01F27/2828H01F29/02Y02E40/10
Inventor 王辉管海平郭修华
Owner 宁波宁变电力科技股份有限公司
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