縱聯(lián)保護(hù)對(duì)光纖通道適應(yīng)性的研究
莊紅山1,張路2,南東亮2,曹偉1,王廷旺2,吳杰3
(1 國(guó)網(wǎng)新疆電力有限公司電力調(diào)度控制中心,新疆 烏魯木齊 830011;
2 國(guó)網(wǎng)新疆電力有限公司電力科學(xué)研究院,新疆 烏魯木齊 830011;3 國(guó)網(wǎng)四川省電力公司電力科學(xué)研究院,四川 成都 610072)
摘 要:為滿(mǎn)足縱聯(lián)保護(hù)及經(jīng)濟(jì)最優(yōu)的要求,工程實(shí)際中的通道連接方式一般采用專(zhuān)用和2M 復(fù)用的光纖通道連接方式。分析了通道延時(shí)和通道誤碼率對(duì)縱聯(lián)保護(hù)產(chǎn)生的影響,得出通道延時(shí)和通道誤碼會(huì)造成縱聯(lián)差動(dòng)保護(hù)延時(shí)動(dòng)作,甚至?xí)斐烧`動(dòng)作,而對(duì)縱聯(lián)距離( 方向) 保護(hù)的影響較小。該結(jié)論為現(xiàn)場(chǎng)工作提供理論支撐,避免因通道延時(shí)和通道誤碼造成縱聯(lián)保護(hù)動(dòng)作延時(shí)過(guò)大、誤動(dòng)或者拒動(dòng)對(duì)電網(wǎng)帶來(lái)的巨大危害。
關(guān)鍵詞:繼電保護(hù);光纖差動(dòng)保護(hù);通道延時(shí);通道誤碼
中圖分類(lèi)號(hào):TM773 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2019)10-0020-05
Research on Adaptability of Pilot Protection to Fiber Channel
ZHUANG Hong-shan1, ZHANG Lu2, NAN Dong-liang2, CAO Wei1, WANG Ting-wang2, WU Jie3
(1 Electric Power Dispatching and Communication Center of State Grid Xinjiang Power Company, Urumqi 830011 , China;
2 Electric Power Research Institute of State Grid Xinjiang Power Company, Urumqi 830011 , China;
3 Electric Power Research Institute of State Grid Sichuan Power Supply Company , Chengdu 610072, China)
Abstract: In order to meet the requirement of pilot protection and optimal economy, the special-purpose and 2M multiplexing channels were adopted in practical engineering application. This paper analyzed the impacts of the channel delay and bit error rate of optical fibers on the pilot protection. It is concluded that the channel delay and channel error will cause delay action of pilot differential protection, and even cause malfunction, however, the influence on pilot protection using distance relay/Directional pilot relaying is small, which provides the theoretical support for the field work, avoids the great harm to the power grid caused by the delay of the pilot protection action, the malfunction or the rejection of the action caused by the channel delay and the channel error code.
Key words: relay protection; optical fiber differential protection; channel delay; channel bit error
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