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Backup automatic switch on-load transmission test method for 110kV intelligent substation

A technology of transmission test and standby automatic switching, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., and can solve the problem of a small number of smart substations

Inactive Publication Date: 2015-12-30
国网天津宝坻供电有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the number of smart substations in most areas is small, and the knowledge of smart substations by various power supply units is still in its infancy, and the actual debugging and test methods for smart substations are still in the groping stage

Method used

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  • Backup automatic switch on-load transmission test method for 110kV intelligent substation
  • Backup automatic switch on-load transmission test method for 110kV intelligent substation
  • Backup automatic switch on-load transmission test method for 110kV intelligent substation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 110kV self-injection mode, A122 incoming line has no voltage and no current, 110kV auto-injection protection action

[0026] (1) Method description: A122 incoming line is equipped with 110kV-4 busbar and 2# transformer running, B116 incoming line is equipped with 110kV-5 busbar and 3# transformer running, 145 switch position is in standby state, such as figure 1 shown.

[0027] (2) Test method:

[0028] 1) Change the setting value of "incoming line no current" of the 110kV standby automatic switching protection device from 0.2A to 2A (the actual load secondary value is less than 1A)

[0029] 2) Open the "4 female protection PT" circuit breaker at the 4-9PT intelligent control cabinet.

[0030] (3) Test phenomenon: switch off A122 with a delay of 5 seconds, and then close the switch of bus coupler 145 with a delay of 0.1 second.

[0031] (4) Precautions: The operation and maintenance personnel should be prepared at the 145 switch to prevent the 145 switch from being m...

Embodiment 2

[0034] 110kV mutual investment mode 2, B116 incoming line no voltage, no current, 110kV mutual investment protection action

[0035] (1) Description of the method: B116 incoming line has full station load, A122 incoming line switch is divided, and is in standby state, bus tie 145 switch is closed, such as figure 2 shown.

[0036] (2) Test method:

[0037] 1) Open the "4 female protection PT" air switch at the 4-9PT intelligent control cabinet

[0038] 2) Open the "5 female protection PT" air switch at the 5-9PT intelligent control cabinet

[0039] (3) Test phenomenon: switch B116 is opened after 5 seconds delay, and switch A122 is closed after 0.1 second.

[0040] (4) Precautions: The operation and maintenance personnel should be prepared at the A122 switch to prevent the A122 switch from being manually closed when the A122 switch fails to close.

[0041] After the test, the wiring mode meets the charging condition of mutual input 1.

Embodiment 3

[0043] 110kV mutual investment mode 1, A122 incoming line no voltage, no current, 110kV mutual investment protection action

[0044] (1) Description of the method: A122 incoming line has the load of the whole station, B116 incoming line switch is in position, and is in standby state, and 145 switch is in closed position, such as image 3 shown.

[0045] (2) Test method:

[0046] 1) Open the "4 female protection PT" air switch at the 4-9PT intelligent control cabinet

[0047] 2) Open the "5 female protection PT" air switch at the 5-9PT intelligent control cabinet

[0048] (3) Test phenomenon: switch A122 is tripped after a 5-second delay, and then switch B116 is closed after 0.1 second.

[0049] (4) Precautions: The operation and maintenance personnel should be prepared at the B116 switch to prevent the B116 switch from being manually closed when the B116 switch fails to close.

[0050] (5) Inversion mode: After the test, the operation and maintenance personnel will change ...

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Abstract

The invention relates to a backup automatic switch on-load transmission test method for a 110kV intelligent substation. When an incoming line A122 drives a bus 110kV-4 and 2# to operate variably, an incoming line B116 drives a 110kV-5 bus and 3# to operate variably, a switch 145 is split and in a standby state, the incoming line no-current constant value of a 110kV backup automatic switch protection device is changed from 0.2A to 2A, or a bus protection TP air switch 5 is pulled at a 5-9PT intelligent control cabinet. During actual on-load operation of the intelligent substation, by means ofactual fault simulation, transmission tests are carried out on special combined units, intelligent terminals and other intelligent devices in the intelligent substation, correction actions of a standby power supply automatic connection device are verified, and accordingly electricity use reliability of users in an administration area is guaranteed.

Description

technical field [0001] The invention belongs to the field of substation operation, and relates to a standby automatic switch-on device, in particular to a 110kV intelligent substation standby automatic switch-on test method with load. Background technique [0002] At present, my country's smart substation has entered a state of high-speed construction, and the secondary equipment debugging of smart substations is very different from traditional substations. The basic requirements of smart substations are to realize the digitalization of substation information, realize the networking of substation communication methods, and realize the standardization of information sharing. It can automatically collect, measure, and control information according to the programs designed by designers. The long-term goal of smart substations It is to realize the automatic analysis and self-healing function of the accident. [0003] The standby self-switching device is the core equipment to im...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 唐河勋陈凯刘宏喆刘沛灿李畅王晓亮秦方宇李云秀
Owner 国网天津宝坻供电有限公司
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