CN101958541A - Serial coding method for implementing reliable trigger of direct-current power transmission converter valve - Google Patents
Serial coding method for implementing reliable trigger of direct-current power transmission converter valve Download PDFInfo
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- CN101958541A CN101958541A CN2010102802507A CN201010280250A CN101958541A CN 101958541 A CN101958541 A CN 101958541A CN 2010102802507 A CN2010102802507 A CN 2010102802507A CN 201010280250 A CN201010280250 A CN 201010280250A CN 101958541 A CN101958541 A CN 101958541A
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- 239000013307 optical fiber Substances 0.000 claims description 16
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Abstract
The invention relates to the field of high-voltage direct-current (HVDC) power transmission, in particular to a serial coding method for implementing reliable trigger of a direct-current power transmission converter valve. A trigger command of a pole control system for the converter valve is transmitted by adopting the combination of a return-to-zero code and a cyclic redundancy check method. The serial coding method comprises the following steps of: packing ignition information of corresponding 12 single valves of the pole control system into a frame of serial codes, wherein one bit corresponds to one single valve, represents trigger at a high level and represents trigger stop at a low level; adding check bit and address head frame information to the data frame through software in a cyclic redundancy code mode; and at the receiving end, completely receiving all data information frames, then comparing whether the address frame is the same as the preset address bit of valve-based electronic equipment, and if so, accepting the information data, otherwise, abandoning all information data; and after the addresses are the same, recalculating the check code in the cyclic redundancy code mode, comparing the calculation result with the received check bit, and performing coding/decoding of subsequent ignition pulse after consistency.
Description
Technical field
The present invention relates to high voltage direct current transmission (HVDC) field, particularly a kind of serial code method that is used to realize the reliable triggering of direct-current transmission converter valve.
Background technology
In high voltage direct current transmission, current conversion station utmost point control system, converter valve valve base electronic equipment and thyristor level gate pole unit constitute the whole secondary supervisory control system of converter valve.Utmost point control system is according to the converter valve of operating condition selection triggering needs conducting, and valve base electronic device is specifically carried out to gate pole unit transmission trigger impulse after receiving trigger command, and the repayment of detecting gate pole unit reports utmost point control system.In the existing DC transmission engineering, the transmission trigger command all adopts the parallel encoding transmission between utmost point control system and the valve base electronic device, promptly adopt 12 optical fiber of corresponding 12 converter valve brachium pontis to connect utmost point control system and valve base electronic device, utmost point control system with the trigger impulse of corresponding 12 brachium pontis by the parallel valve base electronic device that is handed down to of 12 optical fiber.This coded system has fireballing advantage, but shortcoming is that required number of fibers is many.And because any fiber failure utmost point control system and valve base electronic device cisco unity malfunction all, this just causes 12 hidden fault points of 12 optical fiber meanings.And serial code only needs an optical fiber just can finish transmission to the control impuls of 12 brachium pontis, so just greatly reduces because the signal that optical fiber damage problem is brought disturbs or order mistake.
Summary of the invention
The objective of the invention is to propose a kind of simple for structure clear, reliability is high, be used to realize to the reliable serial code method that triggers of HVDC12 pulse conversion valve.
The present invention is used for realizing trigger command between high voltage direct current transmission utmost point control system and the valve base electronic device and triggers the transmission of time sequence information.The present invention breaks through the coded format of the parallel transmission trigger command that adopts usually in traditional HVDC engineering, adopts NRZ to transmit the trigger command to converter valve of utmost point control system in conjunction with the method for cyclic redundancy check (CRC).The transmission of serial code mode signal is reliable and can obviously reduce required communication media passage (that is, optical fiber etc.) number, reduces because transmission medium damages or the unreliable problem of the disturbed transmission that brings.
A kind of reliable serial code method that triggers of direct-current transmission converter valve that is used to realize of the present invention, be used for realizing trigger command between high voltage direct current transmission utmost point control system and the valve base electronic device and trigger the transmission of time sequence information, adopt NRZ to transmit the trigger command to converter valve of utmost point control system in conjunction with the method for cyclic redundancy check (CRC), described serial code method at first is packaged as a frame serial code with the igniting information of corresponding 12 single valves of utmost point control system, the corresponding single valve of bit, for high level is then represented triggering, then represent for low level and to stop to trigger, be that Frame adds check digit and address header frame information by the cyclic redundancy coding mode by software then, at receiving terminal, all data information frames of complete reception earlier, at first whether the compare address frame is identical with the default address bit of valve base electronic device then, identical then acceptance, difference is then abandoned all information datas, after the address is identical, continuation is recomputated check code by the cyclic redundancy coding mode, result of calculation and the check digit of receiving are compared, and the encoding and decoding of the follow-up firing pulse of being allowed for access after the unanimity are handled.
Wherein bit0 is a start bit, bit1～bit13 position be corresponding 12 single valves the trigger impulse of 12 brachium pontis, if the value of this position is 1 then triggering, being 0 stops to trigger, at 6.7ms, promptly send trigger word at least 3 times in the 120 degree angles of flow, if once correctly promptly adopted by valve base electronic device, the bit14 position is the cyclic redundancy check (CRC) position, and bit15 is a position of rest.
Wherein, when in a single day the serial code method damage problem occurred at optical fiber, the trigger data frame of Optical Fiber Transmission was with imperfect, and this moment, regulation will not be accepted incomplete Frame, and switched to back-up system immediately.Promptly further guarantee reliability of data transmission with two redundant system designs.
The advantage of technical solution of the present invention is: the serial code method not only can accurately complete transmission direct current transportation in trigger command and trigger time sequence information between utmost point control system and the valve base electronic device, biggest advantage is that this coding method has reduced in the direct current transportation communication media between the utmost point control system and valve base electronic device.Traditional method adopts the parallel encoding mode, and requiring to transmit between utmost point control system and the valve base electronic device information of valve point fire pulse just needs at least 12 optical fiber.And well-known, any optical fiber converter valve occurs damaging and all can not work on.The many more damage probabilities of transmission medium are just big more.The serial code mode has just reduced this risk greatly.
1, reliable serial code mode
2, simple optical fiber avoids interference, and reduces optical fiber and damages the malfunction probability that brings.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is and the coded system schematic diagram of coding method of the present invention.
Fig. 2 shows the trigger word form when needing converter valve 1,2,3,4 conductings.
Embodiment
The hardware of serial code design of the present invention connects be two redundant utmost point control systems with corresponding dual system VBE between 1 optical fiber of connection.Optical fiber damages and automatically switches to another system when causing signal to transmit fault.
Coded system is seen accompanying drawing 1.
Wherein, bit0 is a start bit, and bit1～bit13 position is the trigger impulse of corresponding 12 brachium pontis, is 1 triggering, is 0 and stops to trigger.At 6.7ms, that is, send trigger word at least 3 times in the 120 degree angles of flow, once correctly promptly adopted by valve base electronic device.The bit14 position is the cyclic redundancy check (CRC) position, and bit15 is a position of rest.
According to system's service requirement, determine trigger word cyclic code sequential.Trigger word form such as accompanying drawing 2 when for example needing converter valve 1,2,3,4 conductings.
Invention has been described according to specific exemplary embodiment herein.It will be conspicuous carrying out suitable replacement to one skilled in the art or revise under not departing from the scope of the present invention.Exemplary embodiment only is illustrative, rather than to the restriction of scope of the present invention, scope of the present invention is by appended claim definition.
Claims (3)
1. one kind is used to realize the reliable serial code method that triggers of direct-current transmission converter valve, it is characterized in that its function is the transmission that is used for realizing trigger command between high voltage direct current transmission utmost point control system and the valve base electronic device and triggers time sequence information, adopt NRZ to transmit the trigger command to converter valve of utmost point control system in conjunction with the method for cyclic redundancy check (CRC), described serial code method at first is packaged as a frame serial code with the igniting information of corresponding 12 single valves of utmost point control system, the corresponding single valve of bit, for high level is then represented triggering, then represent for low level and to stop to trigger, be that Frame adds check digit and address header frame information by the cyclic redundancy coding mode by software then, at receiving terminal, all data information frames of complete reception earlier, at first whether the compare address frame is identical with the default address bit of valve base electronic device then, identical then acceptance, difference is then abandoned all information datas, after the address is identical, continuation is recomputated check code by the cyclic redundancy coding mode, result of calculation and the check digit of receiving are compared, and the encoding and decoding of the follow-up firing pulse of being allowed for access after the unanimity are handled.
2. the method for claim 1, it is characterized in that, wherein bit0 is a start bit, bit1～bit13 position be corresponding 12 single valves the trigger impulse of 12 brachium pontis, if the value of this position is 1 then triggering, being 0 stops to trigger, at 6.7ms, promptly send trigger word at least 3 times in the 120 degree angles of flow, if once correctly promptly adopted by valve base electronic device, the bit14 position is the cyclic redundancy check (CRC) position, and bit15 is a position of rest.
3. method as claimed in claim 2 is characterized in that the serial code method when in a single day the damage problem appears in optical fiber, and the trigger data frame of Optical Fiber Transmission is with imperfect, and this moment, regulation will not be accepted incomplete Frame, and switched to back-up system immediately.Promptly further guarantee reliability of data transmission with two redundant system designs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010280250.7A CN101958541B (en) | 2010-09-10 | 2010-09-10 | Serial coding method for implementing reliable trigger of direct-current power transmission converter valve |
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| CN201010280250.7A CN101958541B (en) | 2010-09-10 | 2010-09-10 | Serial coding method for implementing reliable trigger of direct-current power transmission converter valve |
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| CN101958541A true CN101958541A (en) | 2011-01-26 |
| CN101958541B CN101958541B (en) | 2014-07-23 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130452A (en) * | 2011-03-16 | 2011-07-20 | 中国电力科学研究院 | Control system, valve base control equipment and submodule integration method |
| CN102201670A (en) * | 2011-03-16 | 2011-09-28 | 中国电力科学研究院 | Redundant system based on pole control system and valve base control equipment, and implementation method of redundant system |
| CN102738818A (en) * | 2012-04-05 | 2012-10-17 | 中国西电电气股份有限公司 | Control method and control system of direct current transmission |
| JP2015139369A (en) * | 2014-01-23 | 2015-07-30 | エルエス産電株式会社Ｌｓｉｓ Ｃｏ．，Ｌｔｄ． | Device and method for controlling high voltage direct current transmission system |
| CN105634546A (en) * | 2016-03-10 | 2016-06-01 | 南京南瑞继保电气有限公司 | Method for implementing interface between direct-current converter control protection and converter valve control unit |
| CN115410285A (en) * | 2022-07-15 | 2022-11-29 | 广西添亿友科技有限公司 | Vehicle entering and exiting high-speed processing method, high-speed terminal and cloud server |
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| CN101741225A (en) * | 2009-12-23 | 2010-06-16 | 中国电力科学研究院 | Novel valve base electronic device of direct current converter valve |
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| 黄艳杰: "低压电器几种通信校验码的使用分析", 《中国电工技术学会低压电器专业委员会第十三届学术年会论文集》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130452A (en) * | 2011-03-16 | 2011-07-20 | 中国电力科学研究院 | Control system, valve base control equipment and submodule integration method |
| CN102201670A (en) * | 2011-03-16 | 2011-09-28 | 中国电力科学研究院 | Redundant system based on pole control system and valve base control equipment, and implementation method of redundant system |
| CN102738818A (en) * | 2012-04-05 | 2012-10-17 | 中国西电电气股份有限公司 | Control method and control system of direct current transmission |
| CN102738818B (en) * | 2012-04-05 | 2015-08-19 | 中国西电电气股份有限公司 | A kind of control method of direct current transportation and control system thereof |
| JP2015139369A (en) * | 2014-01-23 | 2015-07-30 | エルエス産電株式会社Ｌｓｉｓ Ｃｏ．，Ｌｔｄ． | Device and method for controlling high voltage direct current transmission system |
| EP2903117A1 (en) * | 2014-01-23 | 2015-08-05 | LSIS Co., Ltd. | Device and method for controlling high voltage direct current transmission system |
| US9866027B2 (en) | 2014-01-23 | 2018-01-09 | Lsis Co., Ltd. | Device and method for controlling high voltage direct current transmission system |
| CN105634546A (en) * | 2016-03-10 | 2016-06-01 | 南京南瑞继保电气有限公司 | Method for implementing interface between direct-current converter control protection and converter valve control unit |
| CN115410285A (en) * | 2022-07-15 | 2022-11-29 | 广西添亿友科技有限公司 | Vehicle entering and exiting high-speed processing method, high-speed terminal and cloud server |
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| CN101958541B (en) | 2014-07-23 |
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