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Control protection system of hybrid topology direct current circuit breaker

A DC circuit breaker, control and protection technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of increasing delay, increasing the time for DC line fault removal, etc., to reduce delay, fast and reliable removal, and system structure The effect of compaction

Active Publication Date: 2017-10-24
NR ELECTRIC CO LTD +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

After the DC line protection trips, the trip signal is sent to the control device of the DC circuit breaker, and then the control device sends it to the DC circuit breaker body. The whole process increases the delay, and the overall time for DC line fault removal is increased.

Method used

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  • Control protection system of hybrid topology direct current circuit breaker
  • Control protection system of hybrid topology direct current circuit breaker
  • Control protection system of hybrid topology direct current circuit breaker

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Embodiment Construction

[0022] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] The invention provides a control and protection system for a hybrid topology DC circuit breaker, which can reliably and quickly operate the DC circuit breaker and achieve the purpose of quickly removing faults in the DC line.

[0024] figure 1 and figure 2 It is the application of DC circuit breakers in bipolar and unipolar DC transmission systems. After the DC circuit breaker is configured, it is necessary to configure the circuit breaker control protection device accordingly.

[0025] image 3 It is a schematic diagram of the control and protection system of the hybrid topology DC circuit breaker of the present invention. The present invention proposes a control and protection system for a hybrid topology DC circuit breaker. The circuit breaker control and protection system includes an upper layer cont...

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Abstract

The invention provides a control protection system of a hybrid topology direct current circuit breaker, and is applied to a direct current power grid or a multi-terminal direct current power transmission system containing the hybrid direct current circuit breaker. The system has a direct current circuit breaker body control function, a circuit breaker body protection function, and a direct current line protection function, through the configuration of the system, the structure is compact, the quantity of secondary devices can be reduced, the direct current line fault clearing time can be reduced, and the requirement of operation reliability of the direct current system can be satisfied.

Description

technical field [0001] The invention belongs to the technical field of flexible AC and DC power transmission in power systems, and in particular relates to a control and protection system for a hybrid topology DC circuit breaker. Background technique [0002] Due to its better controllability and adaptability, flexible DC transmission technology has been more and more widely used in power grid construction. Following the end-to-end flexible DC power transmission and multi-terminal flexible DC power transmission projects, the State Grid Corporation of China proposed the concept of building a flexible DC power grid, which can flexibly control the power flow distribution of the power grid, solve the problems of large-scale new energy transmission and consumption, and gradually realize energy efficiency. Internet development plan. The DC transmission line of the flexible DC grid is designed with overhead lines, which is quite different from the cable transmission used in the cu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26
CPCH02H7/268
Inventor 姜崇学卢宇汪楠楠李钢王佳成王辉石巍
Owner NR ELECTRIC CO LTD
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