Substation telecontrol communication method after IEC61970 interface expansion

Abstract

The invention discloses a substation telecontrol communication method after IEC61970 interface expansion. The method is characterized in that telecontrol communication between a substation and a control center is achieved by expanding IEC61970CIS interface specifications, and protocol conversion which wastes manpower and money during information transmission can be reduced effectively; the CIS open interface and distributed architecture features are applied to substation system construction, and the application integration capability of a substation automation system is increased favorably; under the current trend that hardware equipment performance is increased constantly and network transmission capability is increased constantly, hardware resources can be effectively utilized, power automation system deployment structure is simplified, overall system construction cost is lowered, and the method conforms to the current control center and substation automation system distributed and information integration development trend.

Description

technical field [0001] The invention relates to the field of electric power automation, in particular to a substation telecontrol communication technology after extending the IEC61970 interface. Background technique [0002] Traditional telecontrol communication protocols (such as IEC60870-5) are oriented to points and tag names (Tag). Due to the influence of network transmission capabilities, in order to increase the information carrying capacity of network frames, the protocol format is encoded strictly according to bits, in order to reduce the number of information on both sides. For the difficulty of identifying, receiving and processing protocol packets, these protocols need to make some special regulations, such as specifying whether the transmission method is synchronous transmission or asynchronous transmission, frame synchronization word, anti-interference measures, bit synchronization method, frame structure , the information transmission process; it is also necess...

AI Technical Summary

Problems solved by technology

[0002] Traditional telecontrol communication protocols (such as IEC60870-5) are oriented to points and tag names (Tag). Due to the influence of network transmission capabilities, in order to increase the information carrying capacity of network frames, the protocol format is encoded strictly according to bits, in order to reduce the number of information on both sides. For the difficulty of identifying, receiving and processing protocol packets, these protocols need to make some special regulations, such as specifying whether the transmission method is synchronous transmission or asynchronous transmission, frame synchronization word, anti-interference measures, bit synchronization method, frame structure , the information transmission process; it is also necessary to specify the specific steps to realize the information transmission of data collection, monitoring and control, so the traditional telecontrol communication technology is relatively lacking in network adaptability

Moreover, since the information transmitted based on the traditional telecontrol communication technology and the information in the control center database are defined separately, a certain information of the substation’s moving equipment needs to have a corresponding relationship with the control center’s database in advance, so as to correctly reflect the status of the field equipment , which leads to a series of protocol conversion and semantic analysis problems in the process of data collection, transmission, processing and application

Images