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Intelligent transformer substation link redundancy sampling value online seamless switching method

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

Inactive Publication Date: 2015-03-25
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 solutions 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, including the following steps:

[0038] (1) Construct the sampling value redundant link of the protection device through a dual network or a point-to-point and network coexistence connection mode; at present, there are mainly two ways for the integration of smart substations: point-to-point + network mode (such as figure 1 ) and dual network approach (such as figure 2 ), both of them can be equivalent to such as image 3 The transmission mode of the link redundancy shown.

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

[0040] In the case of point-to-point and networking li...

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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 intelligent substations, and in particular relates to an online seamless switching method for link redundant sampling values ​​of intelligent substations. Background technique [0002] The application of smart substations is promoted with the continuous development of engineering related technologies of smart substations, and has experienced a process from simple to complex, from pilot projects to small batch promotion. [0003] Communication services related to relay protection applications in smart substations are mainly GOOSE services and SV services. Among them, GOOSE services are mainly used for switching value transmission between process layer and bay side equipment, mainly including protection tripping, startup failure, and circuit breaker information. Acquisition and other content can also complete a small amount of analog quantity transmission with low real-time requirements, mainly for the func...

Claims

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Application Information

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Patent Type & Authority Patents(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