Practical simulation test system for digital intelligent substation total station system

Abstract

The invention discloses a practical simulation test system for the full-station system of a digital intelligent transformer substation, and in particular relates to a digital transformer station control system with the core based on IEC61850 standard, comprising three layers, i.e., a course layer, an interlayer and a transformer station layer, wherein protective equipment, measurement and control equipment, metering equipment and other equipment are located in the spacing layer, information can be interchanged between the spacing layer and the course layer through sampling values mapped by specified communication services and object-oriented transformer station events, information interchange is completed according to service of IEC61850 standard, the digital transformer station control system with the core based on IEC61850 standard is connected with a compatible practical stimulation test system, and the practical simulation test system takes a stimulation test mainframe as a basis, takes a multipath digital analogue simulation comprehensive test device as the core, and comprises digital record and stimulation correction equipment, network analysis equipment, a wireless transceiver, a small semaphore test unit and a network switch which are on the basis of IEC61850 communication protocol.

Description

technical field [0001] The invention relates to the field of electric power control, in particular to a practical simulation test system for a digital intelligent substation total station system. Background technique [0002] Digital smart substation has the characteristics of information digitization, communication network, and information sharing standardization, and it can develop the basis for advanced applications, which is an important part of smart grid construction. At present, there is no effective detection method for the performance of secondary equipment such as relay protection in digital smart substations in operation in China, which cannot meet the inspection and monitoring requirements of digital smart substation digital total station equipment. [0003] The main difference between the traditional substation and the full-digital intelligent substation in dynamic real-time simulation and testing is that the transmission medium and control method have changed. ...

AI Technical Summary

Problems solved by technology

At present, there is no effective detection method for the performance of secondary equipment such as relay protection in digital smart substations in operation in China, which cannot meet the inspection and monitoring requirements of digital smart substation digital total station equipment

[0003] The main difference between the traditional substation and the full-digital intelligent substation in dynamic real-time simulation and testing is that the transmission medium and control method have changed. The traditional electrical signal of the transformer output by the power amplifier is followed by the sampling value (SMV) optical fiber digital signal of the IEC61850 communication protocol. Instead, the traditional circuit breaker control electrical signal is replaced by the general object-oriented substation event (GOOSE) message. Therefore, a new software and hardware platform must be developed to simulate and test the digital smart substation

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