Transforming plant integrated protection system based on IEC61850

A technology for protection systems and substations, applied in information technology support systems, emergency protection circuit devices, electrical components, etc., can solve problems such as multiple secondary cables and loss of operating speed of protection devices

Active Publication Date: 2009-05-13
CHINA SOUTHERN POWER GRID COMPANY +1
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  • Claims
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Problems solved by technology

[0004] The protection devices in substations that do not adopt IEC61850 are independent of each other in space, and the mutual cooperation in function is realized through the electrical connection of secondary cables. To ensure the reli

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  • Transforming plant integrated protection system based on IEC61850

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[0022] The present invention will be further described in detail below with reference to the drawings and examples.

[0023] Process bus 1 and process bus 2 are composed of optical fiber Ethernet, which are used for data communication between the merging unit, the intelligent operation box and the protection master station. The GPS timing device performs timing on all merging units and intelligent operation boxes in the substation to ensure that the analog and switch values ​​acquired by the protection master station are all with GPS synchronization time stamps. The main protection A and the backup protection A'obtain the analog quantity information sent by the merging unit from the process bus 1 and the switch information sent from the intelligent operation box, and the main protection B and the backup protection B'obtain the merging unit from the process bus 2. The analog quantity sent and the switch quantity information sent from the intelligent operation box.

[0024] The samp...

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Abstract

The invention discloses an integrated protection system of a transformer substation based on IEC61850. The information about voltage, current and the like of the transformer substation marks GPS clock information by a combination unit; the switch state information of the transformer substation is collected by an intelligent operation box and marks the GPS clock information; and the information about voltage, current and switch state is sent to a protective main station system by Ethernet. The protective main station system judges whether the transformer substation has a failed electrical component according to the uploading information; a tripping operation order is sent to the intelligent operation box by Ethernet if a failure occurs; and the intelligent operation box trips off the corresponding breaker and is insulated from the failure. The protective main station comprises four host computers, wherein, two are used as the main protection for the transformer substation, and the other two are used as the standby protection for the transformer substation. Either host computer of the two used as the main protection can give a tripping operation order if detecting a failure. The two host computers for the standby protection are directly connected by special network, and can give a tripping operation order if detecting a failure at the same time, so that standby protection misoperation is avoided.

Description

technical field [0001] The invention belongs to the field of relay protection and automation of electric power systems, and in particular relates to an integrated protection system for substations based on IEC61850. Background technique [0002] The IEC61850 standard is a substation automation system standard issued by the International Electrotechnical Commission (IEC). China has transitioned from the standard research stage to the engineering application stage, and several substations based on the IEC61850 standard have been put into use. The IEC61850 standard represents the development direction of substation automation technology. [0003] After adopting the IEC61850 standard, all the information of the substation can be transmitted and shared through the network, so that the relay protection device can obtain more information, thus creating the necessary conditions for the application of the new relay protection principle. However, there is no clear technical solution...

Claims

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Application Information

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IPC IPC(8): H02H7/00H02J13/00H02H7/22H02H7/04H02H7/26H02H7/08
CPCY02E60/723Y04S40/124Y04S10/20Y02E60/725Y02E60/7838Y04S10/16Y02E60/00
Inventor 王久玲姚斌杨晋柏赵曼勇祝朝晖周红阳陈朝晖屠黎明龚建平范暐
Owner CHINA SOUTHERN POWER GRID COMPANY
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