反應變壓器油箱內部故障和油麵降低的瓦斯保護

按照目前我國的安全生產規定要求，容量為800qianfuanjiyishangdeyoujinshidianyuanbianyaqi，yingdangzaichuchangshijiuanzhuangyouwasibaohu。zheyibaohuzhuangzhidegongnengzaiyu

，dangyoujinshibianyaqiyouxiangneibuguzhangchanshengqingweiwasihuoyoumianxiajiangshi
，qibaohuzhuangzhinenggoushunshidongzuoyuxinhao。erdangchanshengdaliangwasishi，baohuzhuangzhizehuifashengtiaozha，duankaibianyaqigedianyuancededuanluqi。duiyugaoyaceweizhuangsheduanluqidexianlu（變壓器組）

，未采取使瓦斯保護能切除變壓器內部故障的技術措施時，瓦斯保護可動作於信號。對於容量為400千伏安及以上的車間油浸式變壓器，也應裝設瓦斯保護。

縱聯差動保護

縱聯差動保護裝置作為另外一種常見的變壓器保護技術，通常會被裝設在單獨運行的容量為10000千伏安及以上的電源變壓器上。部分並列運行的

、容量為6300qianfuanjiyishangdebianyaqi，yehuizhuangsheyouzheyibaohuzhuangzhi。erduichangyongbeiyongbianyaqi
，weilejianhuabaohu，kezhuangshedianliusuduanbaohulaidaitizonglianchadongbaohu。ruguodianliusuduanbaohuzhuangzhidelingmindubufuheyaoqiu，bingqieguodianliubaohudedongzuoshixiandayu0.5秒時，縱聯差動保護亦可用於容量小於10000千伏安單獨運行的變壓器上。

過電流保護

過guo電dian流liu保bao護hu是shi很hen多duo工gong程cheng師shi都dou非fei常chang熟shu悉xi的de保bao護hu措cuo施shi了le，這zhe種zhong保bao護hu技ji術shu一yi般ban會hui用yong於yu降jiang壓ya式shi的de電dian源yuan變bian壓ya器qi中zhong。在zai平ping時shi的de實shi際ji應ying用yong過guo程cheng中zhong，對dui於yu升sheng壓ya變bian壓ya器qi和he過guo電dian流liu保bao護hu靈ling敏min度du不bu符fu合he要yao求qiu的de降jiang壓ya變bian壓ya器qi，工gong程cheng人ren員yuan往wang往wang會hui選xuan擇ze采cai用yong複fu合he電dian壓ya起qi動dong的de過guo電dian流liu保bao護hu。

零序電流保護

lingxudianliubaohuyetongyangshidianyuanbianyaqidechangjianbaohujishuzhiyi。zaizhongxingdianzhijiejiedidianwangzhong，ruguobianyaqizhongxingdiankenengjiediyunxing，duiyuliangcehuosancedianyuandeshengyabianyaqihuojiangyabianyaqishangyingzhuangshelingxudianliubaohu

，zheyangdeshejikezuoweibianyaqizhubaohudehoubeibaohu
，bingzuoweixianglinyuanjiandehoubeibaohu。

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