Intelligent terminal device adaptive to intelligent transformer substation

Abstract

The invention provides an intelligent terminal device adaptive to an intelligent transformer substation, belonging to the technical field of power automation. The intelligent terminal device adaptive to the intelligent transformer substation comprises a master control board, an open-in plate, an operating loop plate, an open-out plate, an interlocking plate, a simulating input plate, a display panel and a power source panel, wherein the master control board is used for realizing functions of logic judgment, external communication, I / O (input / output) control and the like of the device; the open-in plate is used for collecting and accessing the quantity of state of a switch; the open-out plate is used for driving a loop relay of the switch; the operating loop plate can be used for realizing functions of self-maintaining trip and close of a trip and close loop of a circuit breaker, monitoring the trip and close positions, pressure locking of trip and close and preventing tripping and the like; the interlocking plate can be used for locking the switch loop such as an earthing knife-switch and the like; the simulating input plate has a function of collecting information of a state sensor; the display panel is used for displaying the condition of the device and the state of the switch; and the power supply panel is used for providing a power supply for the device. With the adoption of the technical scheme provided by the invention, a structure of open-out-interlocking-operating loop is adopted for the operating control part of the switch, so that high infusion of the device with a primary device is realized, the reliability of the operating loop of the switch is enhanced, the CAN (controller area network) communication is reserved; and the intelligent terminal device has expandability.

Description

technical field [0001] The invention belongs to the technical field of electric power automation, and relates to a novel intelligent terminal equipment of an intelligent substation. Background technique [0002] At present, China is vigorously developing smart grid, and the research and construction of smart substation is one of the core goals of smart grid construction. The intelligence of the primary equipment proposed in the smart substation refers to the use of electronic transformers instead of traditional transformers, and the use of smart circuit breakers instead of traditional high-voltage circuit breakers to achieve effective isolation of high-voltage circuits and low-voltage circuits in substation systems, saving a lot of power signal cables and control cables to prevent electromagnetic interference in substation operation caused by the coupling of control cables, and to ensure the stability of the substation system and the ease of maintenance. [0003] However, d...

AI Technical Summary

Problems solved by technology

"Q / GDW 428-2010 Technical Specifications for Smart Terminals in Smart Substations" stipulates the technical requirements for smart terminals. Major domestic manufacturers have also launched a number of products, but due to their own technical limitations, the integration of their products with primary equipment Degree and integration are far from enough

[0004] Patent CN201010193462.1 describes a digital substation switch interface device, but the Ethernet communication interface of the controller is insufficiently considered, and the (Global Positioning System) GPS synchronization time is not added, and the event recording function cannot be completed, and there is no relationship between opening and operating boxes. Clear, cannot guarantee the reliability of tripping and closing

[0005] Patent CN201010034266.X proposes a traditional switch intelligent interface device for digital substations, in which the output control circuit is connected to the circuit breaker tripping coil and closing coil through local cables, without considering the switch tripping and closing coils The control and locking cannot meet the reliability of tripping and closing operations.

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