Substation circuit breaker control loop and monitoring method thereof

A technology for control loops and circuit breakers, applied in circuits, relays, electrical components, etc., to ensure electrical integrity and correctness of action.

Inactive Publication Date: 2020-01-31
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, limited by the lack of online real-time monitoring mode of the circuit breaker and its tripping and closing control loop, the maintenance of circuit breakers mainly relies on the regular maintenance mode, which also brings a huge workload to the on-site operation and maintenance personnel. How to realize On-line non-blind zone monitoring of circuit breaker tripping and closing control circuits is of great significance for the real realization of condition-based maintenance of circuit breakers

Method used

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  • Substation circuit breaker control loop and monitoring method thereof
  • Substation circuit breaker control loop and monitoring method thereof
  • Substation circuit breaker control loop and monitoring method thereof

Examples

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] like figure 1 As shown, a substation circuit breaker control circuit includes: a trip control circuit and a closing control circuit connected between the positive pole of the operating power supply and the negative pole of the operating power supply, and the tripping control circuit and the closing control circuit are connected in parallel between the positive pole of the operating power supply and the negative pole of the operating power supply between.

[0034] The trip control circuit includes: the first contact J1 of the trip relay in series, the second contact J2 of the trip relay, the first contact J1 and the second contact J2 are connected in series with the trip pressure plate, the trip holding coil TBJ, the internal contact DL1 of the circuit breaker, and the trip coil ; The contact TBJA of the trip holding coil TBJ is connected in parallel between the...

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Abstract

The invention discloses a substation circuit breaker control loop and a monitoring method thereof. The substation circuit breaker control loop comprises a tripping control loop and / or a closing control loop connected between an operating power source anode and an operating power source cathode; and the tripping control loop and / or the closing control loop are / is connected in parallel between the operating power source anode and the operating power source cathode; OPT1, OPT2, OPT3 and OPT4 optical coupling loops on the control loop sense the action correctness of the detection contact of a relay; and the HWJ optical coupling loop and TWJ optical coupling loop on the control loop sense the electrical integrity of the control loop of the relay. The whole control loop can act correctly as required, and the state maintenance of the whole control loop is realized.

Description

technical field [0001] The invention relates to a control circuit of a substation circuit breaker and a monitoring method thereof, and belongs to the technical field of substation operation and maintenance. Background technique [0002] Whether the connection of various control circuits in the substation is normal or not directly affects whether the electrical equipment in the substation can work safely and reliably, and is an important link for the safe and stable operation of the substation. Under normal circumstances, the operation and maintenance personnel will inspect or overhaul (maintenance, debug, test) various control circuits in combination with the maintenance period stipulated by the electrical equipment of the power system and the one-time equipment outage plan. The cycle is fixed for one year or A few years, which is commonly referred to as regular maintenance. [0003] With the continuous development of the power grid, the scale of substations is increasing d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H47/00
CPCH01H47/002
Inventor 杨毅宋爽高磊齐贝贝朱继红宋亮亮范栋琛黄哲忱黄翔印吉景熊炜陈勇肖岸原夏磊
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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