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Intelligent transformer substation link redundancy sampling value online seamless switching method

A smart substation and seamless switching technology, applied in the field of smart substations, can solve the problems of increasing the communication links between the main machine and the sub-machine, affecting the overall reliability of the protection, and achieving the effect that the transmission reliability is not affected.

Inactive Publication Date: 2013-05-22
NR ELECTRIC CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For applications with many intervals, the busbar protection may need to adopt a distributed scheme, which brings about the problem of increasing the communication link between the master and slaves, which affects the overall reliability of the protection

Method used

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  • Intelligent transformer substation link redundancy sampling value online seamless switching method
  • Intelligent transformer substation link redundancy sampling value online seamless switching method
  • Intelligent transformer substation link redundancy sampling value online seamless switching method

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Embodiment Construction

[0036] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0037] The present invention provides a method for online seamless switching of redundant sampling values ​​of intelligent substation links, which includes the following steps:

[0038] (1) Construct the sampling value redundant link of the protection device through dual network or point-to-point and networking coexistence connection; currently there are two main ways of integration of smart substations: point-to-point + networking (such as figure 1 ) And dual network methods (such as figure 2 ), both can be equivalent to such as image 3 The shown link is redundant transmission mode.

[0039] (2) In the case of sampled value link redundancy, the coincidence of the interpolation time is realized, so as to realize the online seamless switching of the sampled data.

[0040] In the case of point-to-point and networking link redundancy, the synchronizat...

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Abstract

The invention discloses an intelligent transformer substation link redundancy sampling value online seamless switching method. The method includes steps: building a protecting device sampling value redundancy link by a doubling network or by a connection mode of point-to-point and networking coexistence; realizing superposition of interpolation moments of data of a point-to-point link and a networking link through point-to-point data restructuring synchronous pulses under the circumstance of point-to-point and networking link redundancy; and realizing superposition of interpolation moments of double-network data through a sample counter in the double-network data under the circumstance of doubling network link redundancy. By the intelligent transformer substation link redundancy sampling value online seamless switching method, online seamless switching of sampling values can be realized, and transmission reliability of sampling value data is guaranteed to be free of influences under the circumstance that any link fails.

Description

Technical field [0001] The invention belongs to the technical field of smart substations, and particularly relates to a method for on-line seamless switching of redundant sampling values ​​of smart substation links. Background technique [0002] The application of smart substations is promoted with the continuous development of engineering related technologies of smart substations, and has gone through a process from simple to complex, from pilot projects to small-batch promotion. [0003] The communication services related to relay protection applications in smart substations are mainly GOOSE services and SV services, among which GOOSE services are mainly used for the switch value transmission between process layer and bay side equipment, mainly including protection tripping, starting failure, circuit breaker information It can also complete a small amount of analog data transmission with low real-time requirements, mainly for functional applications of measurement and control dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCY02E60/723Y04S10/16Y02E60/00
Inventor 李力文继峰吕航朱晓彤李广华邹振宇信珂周志勇李鹏飞林泽源孙晓明任万荣赵燕茹杨臻周纬莫娟娄悦孙纯军苏麟
Owner NR ELECTRIC CO LTD