A detection method and system for an intelligent relay protection device
A relay protection device and relay protection technology, applied in the direction of measuring device, circuit breaker test, measuring electricity, etc., to achieve the effect of low cost, powerful function and convenient detection
Active Publication Date: 2015-08-05
STATE GRID CORP OF CHINA +2
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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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[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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Aiming at the ineffective detection of the dynamic performance of a relay protection device in an intelligent substation, based on the feature of the digitalization and informatization share of an intelligent substation secondary system, a detection method and system of an intelligent relay protection device provide a detection method which regards a digital simulation system as a data source and regards the synchronous work of a plurality of digitized relay protection testers as a detection means and structures a detection system of the intelligent relay protection device. In a lab, simulation models can be constructed according to the actual electric topological structure of the intelligent substation and device parameters, a plurality of operation situations which probably happen in a transformer substation can be simulated, transient test data which have higher similarity with the actual operation situations can be acquired by simulation calculation and transformation, the transient test data can be output in a playback mode in the intelligent substation, and the dynamic performance detection of the relay protection device and the checkout of protection setting values 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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IPC IPC(8): G01R31/00
CPCG01R31/3274G01R31/327
Inventor 张侃君陈磊夏勇军胡刚王婷
Owner STATE GRID CORP OF CHINA