Digital substation testing simulation method

Abstract

The invention discloses digital substation testing simulation method. In the method, an IEC61850 standard digital dynamic testing simulation technology-based substation system testing method is adopted, namely a substation simulation model is established, and the actual motion is simulated for system closed-loop testing so as to detect the dynamic characteristics of a device to be detected. For the integrated design of the system, a frame structure consisting of a PCI board card and a multi-CPU desktop is adopted, and a system simulation testing device consisting of the multi-CPU desktop, a PCI bus-based IEC61850 communication card and a small signal and switching value interface card is established, wherein the multi-CPU desktop is a system control platform, and is used for performing processing such as drawing, simulation computation, man-machine interaction and the like; the PCI bus-based IEC61850 communication card provides a plurality of optical Ethernet ports to connect a plurality of protective devices and control equipment; and the protective devices receive MU data of the communication card, and the generated information such as switch position change and the like is returned to the desktop through the communication card to participate in electromagnetism transient calculation for the simulation model.

Description

technical field [0001] The invention relates to a digital substation test simulation method, which belongs to the technical field of electric power automation. Background technique [0002] In recent years, with the promotion and application of the IEC 61850 standard in China and the gradual deepening of research on digital substation related technologies, the pilot construction of digital substations has been rapidly promoted in China. Compared with the traditional substation, the digital substation adopts a unified communication standard system, and the description of the information model and communication process in the substation is more standardized and unified. Information digitization, modeling standardization, and transmission network have become important features of the secondary system of the digital substation. , which subverts the traditional substation information transmission and control mode, is another major change in substation automation technology, and r...

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Problems solved by technology

[0005] Two test devices are widely used in the market now, one is a conventional tester with a power amplifier, which obviously cannot meet the test requirements of a digital substation and does not conform to the IEC61850 standard; the other is to output digital protection in the IEC61850-9 format Test device, the test device provided still uses the idea of ​​conventional substation testing, but the original power amplifier device is canceled, and an interface device is added on the basis of the conventional microcomputer protection tester, and the current and voltage output by the conventional tester are The analog information is converted into an optical signal and then input to the protection device. These solutions can only be used as a transitional test solution in the initial stage of digital substation construction

[0006] The currently used relay protection test devices are not suitable for the needs of power system digitalization. The simplicity of the existing test methods makes the functions imperfect. They can only do some simple basic function tests, and cannot perform system closed-loop simulation tests and power system equipment. Due to the wide application of digital substations, the test methods and functional limitations seriously restrict and hinder on-site commissioning and acceptance, thus affecting the operation of digital substations and the safe and stable operation of power systems, and cannot meet the needs of power system development

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