Function test platform and method for transformer relaying protection device based on real time digital system (RTDS)

A relay protection device, transformer technology, applied in the field of simulation

Active Publication Date: 2011-09-28
STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional non-real-time off-line security and stability analysis and calculation can no longer meet the needs

Method used

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  • Function test platform and method for transformer relaying protection device based on real time digital system (RTDS)
  • Function test platform and method for transformer relaying protection device based on real time digital system (RTDS)
  • Function test platform and method for transformer relaying protection device based on real time digital system (RTDS)

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0043] Example 1, transformer air-drop test:

[0044] 1) The high-voltage side of the three-winding transformer sub-model 1 is air-dropped 10 times, and at least two of the three-phase peak inrush currents should be greater than 2 times the rated current peak value.

[0045] At this time, 10 airdrop tests are recorded in the corresponding logical operation file, and the logical operation object is the high-voltage side of the three-winding transformer sub-model 1. The logical operation corresponding to each airdrop test is airdrop, and the corresponding fault state configuration parameter is the peak value of the inrush current , and in at least two or three airdrop tests, the peak value of the inrush current is greater than 2 times the peak value of the rated current.

[0046] 2) Airdrop 10 times from the medium voltage side, at least twice of which the maximum inrush current peak value in the three phases should be greater than 2 times the rated current peak value.

[0047]...

example 2

[0050] Example 2, metal faults inside and outside the differential protection zone

[0051] 1) Under the condition of full load or no load of the transformer, simulate the following metal faults in the differential protection zone:

[0052] ①. Single-phase grounding inside the transformer;

[0053] The internal single-phase grounding of the transformer refers to the connection between the winding and the casing. At this time, the logical operation object is the winding and the casing, and the corresponding fault state configuration parameters are full load (no load) and single-phase grounding.

[0054] ② One or a combination of single-phase ground faults, two-phase ground faults, two-phase short circuits, three-phase short circuits, and three-phase short-circuit ground faults occur on the high-voltage side F1 and / or medium-voltage side F2;

[0055] At this time, the logical operation object is the high-voltage side fault point F1 and / or the medium-voltage side F2 of the three...

example 3

[0061] Example 3, conversion failure:

[0062] Under the condition of transformer full load, the transition of different fault types at the same point outside the F4 area of ​​the high voltage side fault point is simulated. Fault type: Single-phase ground fault is converted to two-phase ground fault, AN→ABN, BN→BCN, CN→CAN, and the fault conversion time is 20~300ms.

[0063] Taking AN→ABN as an example, its logical operation object is the fault point F4 in the high-voltage side zone of the three-winding transformer sub-model 1: its logical operation and corresponding fault state configuration parameters include:

[0064] fully loaded;

[0065] AN: 20-300ms;

[0066] conversion;

[0067] ABN.

[0068] Among them, AN, ABN and 20-300ms are fault state configuration parameters.

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Abstract

The embodiment of the invention discloses a function test platform for a transformer relaying protection device based on a real time digital system (RTDS). The function test platform comprises a central control unit, a platform database, a fault database and a platform model built by an RTDS element, wherein the platform database is stored with configuration files corresponding to sub models; thefault database is stored with logic operation files corresponding to the sub models; and the central control unit instructs the platform model to enter corresponding states according to the logic operation files and / or instructs the platform model to perform corresponding logic operation and / or enter corresponding fault states according to the configuration files. Test shows that the RTDS is introduced so that the built test platform based on the RTDS can perform offline real-time check on the transformer relaying protection device.

Description

technical field [0001] The invention relates to the field of simulation technology, and more specifically relates to an RTDS-based transformer relay protection device function test platform and method. Background technique [0002] With the continuous acceleration of power grid construction, the safe and stable operation of large power grids is facing unprecedented challenges, and there are increasingly higher requirements for the functions of relay protection devices, and their functions need to be tested. The traditional non-real-time off-line security and stability analysis and calculation can no longer meet the needs. Contents of the invention [0003] In view of this, the purpose of the embodiments of the present invention is to provide an off-line and real-time functional test platform and method for a transformer relay protection device. [0004] In order to achieve the above purpose, embodiments of the present invention provide the following technical solutions: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00H02H7/26
Inventor 徐瑞林陈涛朱小军万凌云吕志盛
Owner STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST
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