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Device for quickly detecting electrical interlocking fault of transformer substation

An electrical interlocking and detection device technology, applied in the field of substation monitoring, can solve the problems of switching off operation and emergency repair efficiency discount, accurate and accurate fault cause judgment, labor and material resources consumption, etc., to improve power supply security, simple device structure, The effect of increasing the level of automation

Pending Publication Date: 2019-11-22
STATE GRID JIANGSU ELECTRIC POWER CO LTD TAIZHOU POWER SUPPLY BRANCH +1
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Problems solved by technology

[0006] From the above traditional emergency repair process, it can be seen that during the operation of the operation and maintenance personnel, it took more than 3 hours from the time when the isolating switch could not be powered until the on-site troubleshooting by the maintenance personnel. Accurate and judgmental, just the expression "no electric operation" cannot define the problem of the internal circuit of the primary mechanism box or the secondary blocking circuit, which wastes manpower and material resources in vain, and the efficiency of switching operation and emergency repair is greatly reduced

Method used

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  • Device for quickly detecting electrical interlocking fault of transformer substation
  • Device for quickly detecting electrical interlocking fault of transformer substation
  • Device for quickly detecting electrical interlocking fault of transformer substation

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specific Embodiment

[0026] Specific embodiment: Still taking the 220 kV double-bus connection mode of a 220 kV substation in the background technology as an example, the fault process is simulated. The specific situation is as follows: After the electric operation, the operation and maintenance personnel observe the panels of "Locking Status Monitoring Device A" and "Locking Status Monitoring Device B" installed in the compartment terminal box. Figure 6 as shown, Figure 6 If the middle light is gray, it means the light is on, if the light is white, it means the light is off, if the light is on, it means the corresponding motor power switch is closed, and if the light is off, it means the corresponding motor power switch is open. from Figure 6 The operation and maintenance personnel in the center intuitively found that the 3G locking operation circuit of the isolating switch is unblocked. It is impossible that the control circuit inside the 3G electric operating mechanism box of the isolating ...

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Abstract

The invention relates to the technical field of transformer substation monitoring, and especially relates to a device for quickly detecting an electrical interlocking fault of a transformer substation. A locking state monitoring device A of the device comprises a plurality of sampling measurement points, the measurement points collect state information of motor power supply air switches, each sampling measurement point of the locking state monitoring device A is provided with an indicator light, each locking state monitoring device B comprises five measurement points, the three measurement points A, B, C are respectively connected with the corresponding motor power supply air switches, a self-holding node and a locking node are respectively connected with the power supply air switches corresponding to a self-holding power supply node and a locking power supply node of the circuit, and each sampling measurement point of each locking state monitoring device B is provided with an indicator light. According to the invention, reliable and accurate fault information is provided for maintainers, and thus the safety and the reliability of power supply are improved.

Description

technical field [0001] The invention relates to the technical field of substation monitoring, in particular to a fast detection device for electrical interlocking faults in substations. Background technique [0002] With the vigorous development of power Internet of Things technology and the continuous improvement of the intelligence level of modern substations, substation switching operations have become the most frequent operations for substations to change their operation modes, and their reliability has become an important factor for the reliability of power supply and operational safety of modern substations. one ring. In order to prevent misoperation by substation operation and maintenance personnel, the isolating (grounding) switch must have a complete anti-misoperation function, which is mainly divided into two parts: mechanical locking and electrical interlocking, and the latter is essential. [0003] The anti-misoperation of the substation must have dual requireme...

Claims

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Application Information

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IPC IPC(8): G01R31/00H02B15/00
CPCG01R31/00H02B15/00
Inventor 杨庆华马泰王肖印吉景徐新陈挺孔德成陈利孙俣林立汤德宝周正伟陆子渊徐祥波聂文王庆军
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD TAIZHOU POWER SUPPLY BRANCH
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