Smart substation system
A technology of intelligent substation and station control layer, which is applied in information technology support systems, electrical components, circuit devices, etc., can solve the problems of difficulty in guaranteeing the action time of relay protection, increased load of bay layer devices, and difficulty in meeting the rapid removal of relay protection. requirements and other issues to ensure compatibility and interoperability, improve stability, and avoid data transmission delays and congestion.
Active Publication Date: 2017-04-12
NARI TECH CO LTD
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Problems solved by technology
[0005] Second, data transmission delay or congestion
The electrical quantities (such as active power, reactive power, frequency, power factor, etc.) required for measurement and control, protection devices, etc. need to synchronize voltage and current. Delay or congestion will cause voltage, current, etc. to lose synchronization. Increase the load or delay of the spacer device
[0006] Third, it is difficult to meet the requirements of quick removal of relay protection
However, the delay of data transmission in this structure makes it difficult to guarantee the action time of relay protection
Method used
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[0016] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.
[0017] like figure 1 or figure 2 As shown, the intelligent substation system of the present invention includes a station control layer and a measurement, control and protection device connected to the station control layer. There is Ethernet between the measurement and control protection device and the station control layer. Compared with the existing smart substation system with station control layer, process layer and bay layer in the prior art, the present inventio...
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The intelligent substation system of the present invention includes a station control layer and a measurement and control protection device connected to the station control layer through Ethernet. The measurement and control protection device includes a bus measurement and control protection device, a main transformer measurement and control protection device and a line measurement and control protection device. The devices are all formed by communication connection between the exchange part and the measurement and control protection part. The bus measurement and control protection device is connected with a voltage transformer, a switch and a switch knife, and the main transformer measurement and control protection device and the line measurement and control protection device are respectively connected with a current transformer and a switch. and switch blades, GOOSE and SV are connected to the switching part of the busbar measurement and control protection device through the main transformer measurement and control protection device and the switching part of the line measurement and control protection device. Reduce the existing intelligent substation system structure from three layers to two layers, realize the direct exchange of GOOSE and SV data between the measurement, control and protection devices, and avoid the data transmission delay caused by setting up the network between the interval layer and the process layer and congestion.
Description
technical field [0001] The invention relates to the fields of substation automation and relay protection, in particular to an intelligent substation system. Background technique [0002] The structure of the smart substation system is divided into station control layer, bay layer and process layer. The process layer device is composed of a combination unit and an intelligent terminal, which is used to collect voltage, current, switch value, control output, etc. The interval layer device is a measurement and control, protection or protection measurement and control integrated device, which realizes analog, DC, switch, Control output and relay protection function. Through the analysis of the system structure, the process layer device is the intermediate process of data transmission, which transmits the intermediate data to the bay layer through Ethernet, or converts the control output of the bay layer into an output signal to control (primary) equipment, etc. [0003] The di...
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IPC IPC(8): H02J13/00
CPCY04S10/16Y04S40/124Y02E60/00
Inventor 李熙春黄国方陈西海李家峰李宁潘成
Owner NARI TECH CO LTD