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1、第34卷第3期電力電容器與無功補(bǔ)償Vo1．34No．32013年6月PowerCapacitor＆ReactivePowerCompensationJun．2013電力系統(tǒng)容性無功及補(bǔ)償(黃留欣，黃磊，趙穎煜，劉亞輝，郭僖斌。)(1．鄭州鑫達(dá)泰電力節(jié)能技術(shù)有限公司，河南鄭州450001；2．許昌供電公司，河南許昌461000；3．河南工業(yè)大學(xué)，河南鄭州450001)摘要：電力系統(tǒng)供電網(wǎng)絡(luò)中的輸電線路及電纜，在運(yùn)行中要產(chǎn)生容性無功。由于城網(wǎng)改造配電網(wǎng)絡(luò)主要由高壓電纜組成，高壓電纜產(chǎn)生的容性無功嚴(yán)重影響配網(wǎng)的安全經(jīng)濟(jì)運(yùn)行。為解決電力系
2、統(tǒng)容性無功過補(bǔ)問題，我們從電力系統(tǒng)容性無功的產(chǎn)生機(jī)理進(jìn)行分析，找出電力系統(tǒng)容性無功產(chǎn)生的特點(diǎn)及解決辦法。結(jié)果表明電力系統(tǒng)容性無功功率取決于電網(wǎng)中輸電線路及電纜的結(jié)構(gòu)及長(zhǎng)度，電網(wǎng)結(jié)構(gòu)確定以后，它的容量相對(duì)固定，變化不大。因此對(duì)電力系統(tǒng)容性無功的補(bǔ)償應(yīng)相對(duì)固定并采用分散補(bǔ)償和集中補(bǔ)償相結(jié)合的原則進(jìn)行配置。同時(shí)針對(duì)10kV及35kV小電流接地系統(tǒng)因接地電容電流增大引起的消弧線圈容量增大，運(yùn)行可靠性降低問題，研制出了既有感性補(bǔ)償又能減少接地電容電流的裝置Y接電抗器滅弧裝置，對(duì)它的原理構(gòu)造。性能進(jìn)行了介紹。關(guān)鍵詞：電力系統(tǒng)；容性無功；過剩；
3、補(bǔ)償中圖分類號(hào)：TM531．5文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1674—1757(2013)03-0001-05CapacitiveReactivePowerandCompensationinPowerSystem(HUANGLiu—xin，HUANGLei，ZHAOYing—yu，LIUYa—hui，GUOXi—bin)(1．ZhengzhouXindataiPowerConservationTechnologyCo．，Ltd．，Zhengzhou450001，China；2．XuchangPowerSupplyCompany，Xuch
4、ang461000，China；3．HenanUniversityofTechnology，Zhengzhou450001，China)Abstract：Capacitivereactivepowerisgeneratedinthetransmissionlineandcableinpowersupplynetworkduringoperation．Sincethedistributionnetworkofurbannetworkmodificationismainlycomposedofhighvoltagecables，inw
5、hichthecapacitivereactivepowergeneratedhasaseriousim-pactonthesafeandeconomicoperationofdistributionnetwork．Forsolvingtheovercompensationis—sueofcapacitivereactivepowerofpowersystem，theanalysisismadefromthegenerationmechanismofthecapacitivereactivepowerinthepowersyste
6、m，thefeaturesofsuchreactivepowerofpowersys—ternandsolutionarefound．Itisshownbytheresultthatthecapacitivereactivepowerinthepowersystemisdeterminedbythestructureandlengthoftransmissionlineandcableofthepowernetwork．Oncethenetworkstructureisdetermined，itscapacityisrelativ
7、elyfixedwithlessvariation．There—fore，thecompensationtocapacitivereactivepowerofpowersystemshallberelativelyfixedandsuchprincipleasspreadandconcentratedcompensationisadoptedfordisposition．Asforreductionof0p-erationreliabilityduetocapacityincreaseofarcsupersessioncoilbe
8、causeoftheincreaseofeaahedcapacitivecurrentinthesmallcurrentearthingsystemat10kVand35kV，theextinctiondevicenamedYconnectionw
