Intelligent interface device of digital transformer substation switch

An intelligent interface and substation technology, applied in electrical components, circuit devices, etc., can solve problems such as increasing cable connections, and achieve the effect of reducing cable connections, reducing engineering construction and maintenance costs, and reducing the number of uses

Active Publication Date: 2010-11-24
NARI TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the protection, measurement and control devices of medium and low voltage substations are installed in a distributed manner and are directly installed in the switchgear. A

Method used

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  • Intelligent interface device of digital transformer substation switch
  • Intelligent interface device of digital transformer substation switch
  • Intelligent interface device of digital transformer substation switch

Examples

Experimental program
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Embodiment Construction

[0033] The entire operation of the switch intelligent interface device can be divided into five links: protection measurement and control, sampling and sending, GOOSE tripping and closing, switch status monitoring data access, and liquid crystal display, as follows:

[0034] Protection measurement and control means that the medium and low voltage switch connects the voltage and current of the line to the switch intelligent interface device in the traditional way. The sampling frequency adopts a cycle of 32 points, and performs Fourier calculation on the protection sampling voltage and current, and compares the calculated value with the set value. Make a comparison, then make a logical judgment, and perform a trip or alarm operation. The equipment has a switch and lock function, which can avoid the occurrence of misoperation by operators. Process the measured current and voltage, and send it to the background for monitoring through the first network port.

[0035] Sampling and...

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Abstract

The invention discloses an intelligent interface device of a digital transformation substation switch, which comprises the following functional plug-ins: an AC sampling board which can be accessed into voltage, current and related direct current component of the switch; a POWER power supply communication board which is accessed into a power supply for realizing network sharing of sampled data, tripping and closing operation and alternate locking of a GOOSE network, communication with a background and a dispatcher and access of the state monitoring quantity of the switch; an I/O board which is used for the access of the traditional switching quantity and the state quantity and the outward control and operation; an OPA operation panel which can realize the control of a tripping and closing coil of the switch and the locking function; and a CPU board which is used for realizing the functions of data calculation, logic judgment, outward communication, liquid crystal communication and the like of the device and simultaneously has the function of a bus backboard, wherein all the boards are inserted in the bus backboard; and a liquid crystal board, wherein the data display of the liquid crystal board is connected with the CPU through a serial port. The device can realize the intelligentization and the digitalization of the switch, reduce the using number of equipment and reduce the cost.

Description

technical field [0001] The invention relates to a switch intelligent interface device suitable for medium and low voltage level digital substations, belonging to the technical field of electric power automation. Background technique [0002] With the continuous promotion and deepening of the IEC61850 standard, there are more and more digital substations. The design of the three-layer structure not only makes the system structure of the entire substation clearer, but also provides convenience for the operation and maintenance of the substation. These are based on the IEC61850 standard Provide favorable support for the overall construction and promotion of digital substations. [0003] A typical feature of a digital substation is the transformation of process-level equipment, specifically the use of electronic transformers, merging units, and intelligent operation boxes. The use of electronic transformers prompts the creation of a merging unit device, which is used to send sa...

Claims

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Application Information

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IPC IPC(8): H02J13/00
Inventor 樊陈倪益民李惠宇杨宇高春雷蔡月明赵东坡徐石明仇新宏季学军
Owner NARI TECH CO LTD
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