Progressive search type digitized relay protection electromagnetic transient simulation test method

Abstract

The invention discloses a progressive search type digital relaying protection electromagnetic transient simulation test method. The method comprises the following steps: a data conversion module regulates and codes transient simulation data which are generated by an electromagnetic transient simulation program; the converted data are exchange to an embedded computer communication management module by Ethernet, a sampling value data frame is formed in the module according to specified standard requirements and sent by the Ethernet, and another Ethernet port in the computer communication management module is used for receiving a digital GOOSE trip signal which is sent by a full-digital relaying protection device, and unpacking and extracting data according to the specified standard; and a simulation test scheduling module schedules operation of the electromagnetic transient simulation program, progressively searches response time of the tested relaying protection device according to the process of fault development of a power supply system, and successively modifies an electromagnetic transient simulation model. The test method helps solve problem that the traditional electromagnetic transient simulation software can not be applied to the actual relaying protection device tests.

Description

Technical field [0001] The invention relates to a relay protection electromagnetic transient simulation test method, in particular to a progressive search type digital relay protection electromagnetic transient simulation test, which belongs to the field of electric power automation. Background technique [0002] Relay protection is an important guarantee for the safe operation of power systems. Since the appearance of relay protection devices, people have been studying how to detect their characteristics and related performance. With the development of the power system, the grid structure is becoming more and more complex, and there are more and more electrical equipment, which makes the number of corresponding relay protection devices increase rapidly. At the same time, the introduction of computer technology and the development of various digital signal processing technologies have resulted in more and more principles and types of relay protection, with different characteristi...

AI Technical Summary

Problems solved by technology

In addition, the traditional simulation research on the action behavior of relay protection by using electromagnetic transient simulation program can only carry out principle simulation to describe the action behavior of protection, but cannot directly test the interface with relay protection device, but the actual relay protection device The implementation is not limited to the basic principles of protection, and usually requires a lot of logic coordination, action time coordination and other specific technical details hidden in the device.

Simple principle simulation is difficult to fully understand the whole picture of the protection device's action behavior

Although real-time transient simulation devices with full analog output (consisting of electromagnetic transient simulation programs, D / A conversion and power amplifiers) (such as RTDS in Canada) have been used in many applications, the high price and maintenance costs and huge The size greatly limits its further promotion, and this real-time transient simulation device is only suitable for traditional analog input relay protection, but not for digital relay protection testing. Therefore, research on electromagnetic relay protection based on PC platform Transient simulation is used for simulation testing of digital relay protection, instruments and intelligent devices that meet the new regulations. It is very necessary and has broad prospects

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