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Method for designing communication protocol of high-voltage and direct-current (HVDC) thyristor valve base electronic equipment

A technology of valve-based electronic equipment and converter valves, which is applied in the direction of electrical components, circuit devices, and data exchange through path configuration, which can solve problems such as poor stability, achieve simple and clear design, and improve system operation reliability.

Active Publication Date: 2014-03-12
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the monitoring information reported to the valve-based electronic equipment in the DC project often uses the Ethernet protocol to complete the communication. The stability of this protocol is obviously not as good as the fieldbus protocol specially used in the industrial control field.

Method used

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  • Method for designing communication protocol of high-voltage and direct-current (HVDC) thyristor valve base electronic equipment
  • Method for designing communication protocol of high-voltage and direct-current (HVDC) thyristor valve base electronic equipment
  • Method for designing communication protocol of high-voltage and direct-current (HVDC) thyristor valve base electronic equipment

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Embodiment Construction

[0013] The system design scheme of the valve-based electronic equipment of the present invention is: the communication information between the valve-based electronic equipment and the pole control system is divided into two categories: valve operating state information and converter valve operating state statistical information. The valve operating status information is obtained by the upper gate of the thyristor level and reported to the valve-based electronic equipment. The valve-based electronic equipment stores and packages the information reported by each thyristor level into message information conforming to the CAN protocol. At the same time, the valve-based electronic equipment summarizes and judges all thyristor-level information, and synthesizes it into the overall operation status information of the valve, and synthesizes it into the valve operation status word. During the inspection of the extreme control system, it is reported to the extreme control system as the i...

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Abstract

The invention provides a novel method for designing a communication protocol of high-voltage and direct-current (HVDC) thyristor valve base electric equipment. Based on the controller area network (CAN) protocol, the communication protocol between a pole control system and the valve base electric equipment is set according to different working conditions of a thyristor valve, and information exchange between the valve base electric equipment and the pole control system can be completed by adopting a serial coding mode. The design is simple, clear, reliable and stable, and contains all the basic working conditions of thyristor valve operation. Byadopting the communication protocol, besides the basic communication requirement between the pole control system and the valve base electric equipment can be met, the strong interference resistance of a CAN bus can be introduced to a thyristor valve secondary control system to greatly improve the operation reliability of the system. A multi-master CAN networking communication mode is adopted between the valve base electric equipment and a control protective system, and valve base electronics (VBE) can monitor status changes at any time occurring in the thyristor valve and report the detection information to the control protective system. The networking mode ensures real time performance of monitoring the valve by the VBE.

Description

technical field [0001] The invention relates to the field of high-voltage direct current transmission (HVDC), in particular to a communication protocol design method for valve-base electronic equipment of an HVDC converter valve. Background technique [0002] In high-voltage direct current transmission, the valve-based electronic equipment of the converter valve is the first-level monitoring equipment for the converter valve. According to the received control command of the extreme control system, the device directly realizes the triggering and blocking operations of the converter valve, and collects the reported information of each thyristor level in real time, and feeds it back to the extreme control system. Due to the timeliness and reliability, the triggering and blocking commands of the extreme control system require a special optical fiber channel, which is sent to the valve-based electronic equipment after simple coding. The monitoring information of the valve, etc. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00H04L12/40H04L1/00
Inventor 郝长城周亮张娟
Owner CHINA ELECTRIC POWER RES INST
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