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Detection method and detection system of intelligent relay protection device

A technology of a relay protection device and a detection method is applied in the directions of measuring devices, circuit breaker testing, measuring electricity, etc., to achieve the effects of low cost, simple structure and powerful functions

Active Publication Date: 2013-05-15
STATE GRID CORP OF CHINA +2
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Problems solved by technology

The method and system can build a simulation model according to the electrical topology structure and equipment parameters of the smart substation, simulate various operating conditions that may occur on the substation site, perform simulation calculations and convert them to obtain transient test data with a high degree of similarity to the actual operating conditions , carry out the dynamic performance detection of the relay protection device and the verification of the protection fixed value in the smart substation site, this method and system solve the defects existing in the current detection method

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  • Detection method and detection system of intelligent relay protection device
  • Detection method and detection system of intelligent relay protection device
  • Detection method and detection system of intelligent relay protection device

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Embodiment Construction

[0043] The technical solutions in the present invention will be clearly and completely described below in conjunction with specific embodiments.

[0044] The schematic diagram of the main wiring and equipment installation position of the primary system of the smart substation in an embodiment of the present invention is as follows image 3 As shown, the smart substation is a 220kV smart substation test system, the system is equipped with a background monitoring device, a single set of secondary equipment is configured, and the protection device adopts a direct mining and jumping networking method; the field process layer equipment of the smart substation includes It is composed of 6 electronic voltage transformers (EVT), 6 electronic current transformers (ECT), 7 merging units (MU), and 6 intelligent terminals (ST). The installation position and corresponding relationship of each process layer equipment are as follows image 3 shown.

[0045] The test system needs to carry ou...

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Abstract

The invention provides a detection method and a detection system of an intelligent relay protection device. Aiming at the situation that compared with the prior art, dynamic properties of the relay protection device cannot be detected effectively in an intelligent substation spot, and starting from the feature of sharing of digitalization and informatization of an intelligent substation secondary system, the detection method which regards a digit simulation system as a data source and regards synchronous working of a plurality of digitized relay protection testers is provided and the detection system of the intelligent relay protection device is constructed. Various operating situations which probably happen in a transformer substation can be simulated according to an actual electric topological structure of an intelligent substation and device parameters construction and simulation models in a lab, simulating calculation can be conducted, transient test data which have higher similarity with the actual operating situations can be achieved by transforming, the transient test data can be output in the intelligent substation spot in a playback mode, and detection of the dynamic properties of the relay protection device and checkout work of protection definite value can be carried out.

Description

technical field [0001] The invention relates to the technical field of digital-analog hybrid simulation test and intelligent substation test, in particular to a detection method and system for an intelligent relay protection device. Background technique [0002] The construction of smart grid has become a national development strategy, and it is imperative for smart substations to gradually replace traditional substation integrated automation substations; at present, smart substations have entered the stage of promotion and application. Compared with the traditional substation, the structure of the secondary equipment of the smart substation and the information transmission method between the equipment have undergone great changes, resulting in corresponding changes in the detection technology of the intelligent secondary equipment. There are three main detection methods and systems for existing intelligent relay protection devices, as follows: [0003] 1. Digital relay pro...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/327G01R31/00G01R31/3274
Inventor 张侃君陈磊夏勇军胡刚王婷
Owner STATE GRID CORP OF CHINA
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