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1、第40卷第2l期電力系統(tǒng)保護(hù)與控制VO1.40NO.212012年11月1日PowerSystemProtectionandControlNOV.I,20I2基于WSN重構(gòu)廣域保護(hù)緊急通信通道的研究劉寶,尹項(xiàng)根,李振興,鄧星,劉穎彤(強(qiáng)電磁工程與新技術(shù)國家重點(diǎn)實(shí)驗(yàn)室(華中科技大學(xué)),湖北武漢430074)摘要:電網(wǎng)發(fā)生極端災(zāi)變時(shí)常因0PGW光纜損壞而引起通信中斷,導(dǎo)致線路主保護(hù)乃至線路被迫退出運(yùn)行,廣域保護(hù)也會(huì)發(fā)生類似問題?;跓o線傳感器網(wǎng)絡(luò)(WirelesSSensorNetwork,WSN)技術(shù),提出廣域保護(hù)緊急通信通道的重構(gòu)方案。介紹了WSN的系統(tǒng)結(jié)構(gòu)和
2、特點(diǎn),分析了WSN在發(fā)生電網(wǎng)災(zāi)變時(shí)相對于傳統(tǒng)通信方式的優(yōu)勢,并探討了WSN應(yīng)用于通信通道重構(gòu)時(shí)的路由協(xié)議、數(shù)據(jù)可靠性,數(shù)據(jù)融合及延時(shí)等關(guān)鍵技術(shù)。進(jìn)而結(jié)合縱聯(lián)電流差動(dòng)保護(hù),測試不同負(fù)載率下的WSN傳輸實(shí)驗(yàn),并將測試結(jié)果應(yīng)用于廣域保護(hù)的數(shù)字仿真中,結(jié)果顯示基于WSN重構(gòu)緊急通信通道能夠滿足廣域保護(hù)的需要。在極端災(zāi)變時(shí)若允許適當(dāng)降低主保護(hù)動(dòng)作速度,上述方案也能為線路縱聯(lián)主保護(hù)提供通信通道。關(guān)鍵字:廣域保護(hù);無線傳感器網(wǎng)絡(luò);災(zāi)變;通信通道重構(gòu);縱聯(lián)保護(hù)StudyoncommunicationchannelreconstructionbasedonWSNforwidea
3、reaprotectionLlUBao,YINXiang—gen,LIZhen—xing,DENGXing,LIUYing-tong(ElectricPowerSecurityandHighEficiencyLab(HuazhongUniversityofScienceandTechnology),Wuhan430074,China)Abstract:Whenextremegriddisastersoccur,communicationoutageisoftencausedbyOPGWdamageSOthatthemainprotectionsevenline
4、swillfail.SimilarproblemscanOCCHI"inthewideareaprotection(WAP).Inthispaper,anovelcommunicationchannelreconstructionschemebasedonwirelesssensornetwork(WSN)ofWAPisproposedtosolvetheaboveproblem.ThesystemstructureandcharacteristicofWSNareintroduced,thesuperiorityofcommunicationwayonWSN
5、forprotection,comparedwiththetraditionalwayofcommunication,isanalyzed,andthekeytechnologyincludingrouterprotocols,datareliability,datafusionandtimedelayarediscussed.Combinedwithpilotcurrentdiferentialprotection,thepapertestsdatatransmissionexperimentswithdiferentloadfactors,andappli
6、esthetestresultstosimulationexperimentofWAP.ThesimulationresultsshowtheschemeofemergencycommunicationchannelreconstructionbasedonWSNCansatisfytheneedofWAPandserveasthecommunicationchannelofmainprotectionwhenitsactionperformancerequirementsCanbereducedappropriatelyunderextremegriddis
7、aster.ThisworkissupportedbyNationalNaturalScienceFoundationofChina(No.50877031andNo.50837002).Keywords:wideareaprotection;wirelesssensornetwork;catastrophe;communicationchannelreconstruction;pilotprotection中圖分類號:TM76文獻(xiàn)標(biāo)識碼:A文章編號:1674.3415(2012)21.0090.06其轉(zhuǎn)發(fā)數(shù)據(jù)的監(jiān)測功能失效;另外,人為破壞(包0引言括恐怖襲擊
8、)也會(huì)造成通信系統(tǒng)的中斷l(xiāng)1;特別對廣