A fully redundant intelligent terminal device for intelligent substation
A smart substation and smart terminal technology, applied in the field of smart substations, can solve problems such as wrong exits and power failures in the whole substation, and achieve the effects of reliable output, simple structure, and strong implementability
Active Publication Date: 2022-02-22
BEIJING SIFANG JIBAO ENG TECH +1
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Problems solved by technology
The intelligent terminal device exchanges information with the protection device through the GOOSE message of IEC61850-8-1. It is the monitor and executor of the protection device and directly controls the switch and circuit breaker. The correctness of the action behavior is especially important. Once the intelligent terminal device is running Abnormal, misoperation or refusal to operate will cause serious accidents, and in severe cases, it will cause the entire substation to lose power
[0004] In the implementation of the existing technology, a single CPU is used to complete the tripping and closing operation of the circuit breaker, and the protection device uses the starting CPU and the protection CPU to synthesize a GOOSE message for tripping, and the intelligent terminal device uses a single frame to trip after receiving the GOOSE message. There is no redundancy at all, it is easy to cause mis-export
Method used
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[0021] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.
[0022] The following is attached with the manual figure 1 , the technical solution of the present invention will be further introduced in detail.
[0023] In the embodiment of this application, a fully redundant intelligent terminal device is provided, including time-division multiplexing Ethernet, field programmable gate array FPGA, starting CPU, egress CPU, starting relay, egress plug-in, and remote signaling plug-in. The protection device and the intelligent terminal device exchange information through the IEC61850-8-1 standard (GOOSE message). The protection device includes: starting the CPU, protecting the CPU and an FPGA with a soft-core MAC.
[0024] The Ethernet line of the time-division...
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A high-reliability fully redundant intelligent terminal device, through the fully redundant design of hardware and software, processes the redundant GOOSE messages received from the protection device, only when the two redundant messages are in the same state , the intelligent terminal device closes the contact of the export relay to perform the tripping operation, otherwise the contact of the export relay will not be closed, effectively preventing the relay protection device and the intelligent terminal device from being damaged when any component is damaged or any software module is abnormal. When the action occurs, at the same time, device failures can be found and alarms can be repaired in time to ensure that the exit of the intelligent terminal device is reliable. The intelligent terminal device can be directly applied to process layer equipment in engineering applications.
Description
technical field [0001] The invention belongs to the field of intelligent substations, in particular to a fully redundant and highly reliable intelligent terminal device. Background technique [0002] At present, the smart substation has brought far-reaching influence and great changes to the protection device, automation device and operation and maintenance management of the substation, and has become an important part of the construction of the smart grid. has great significance. With the widespread application of digital communication technology in smart substations, smart terminal devices have become an important part of remote signaling signal collection, circuit breaker and knife switch control in substations, and their functions and performance have attracted widespread attention. However, with the popularity of smart substations, smart terminal devices are not mature enough in terms of safety, reliability, and stability, and some problems have arisen. Therefore, the...
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IPC IPC(8): H02J13/00H02H1/00
CPCH02J13/00H02H1/0061H02H1/0092Y04S40/124Y02B90/20
Inventor 王富亮董志平王双剑史文豪蒋新成姚睿刘涛袁海涛
Owner BEIJING SIFANG JIBAO ENG TECH