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1、浅谈提高继电保护可靠性的措施中英文对照OnimprovingEnglishreliabilitymeasuresofrelayprotection木文就多年的工作实践对当前电力系统继电保护状态检修的运行维护进行的分析与探讨，并就提高继电保护可靠性的措施，提出几点建议。Basedonyearsofpracticalworkonthecurrentstateofthepowersystemoperationandmaintenanceofrelayprotectionmaintenancediscu
2、ssionandanalysis,andthemeasurestoimprovethereliabilityoftherelayprotection,andputsforwardsomesuggestions・一、继电保护装置的特点Characteristics,relayprotectiondevice若想强化对继电保护的运行维护，就要首先了解继电保护装置的特点，使其能满足基木的运行要求。继电保护装置主要以下儿个方面的特点：1）可靠性。继电保护装置的可靠性特征是其最具特色的特点,在电力系统运行
3、过程中发生故障吋,继电保护装置会在其保护范围内对故障做出可靠动作，有效断开故障点的扩大。2）选择性。继电保护装置在电力系统运行岀现故障时，会有选择地切出故障，将最接近故障点的开关设备及时断开，有效防止故障的扩人，让电力系统故障部分除外的其他部分还能持续正常运行。3）灵敏性。继电保护装置的灵敏性可用过灵敏系数來衡量，是指它对保护范围内的异常状态或运行故障的反应能力。4）快速性。在系统发化故障吋，继电保护装置能以允许的最快速度做出反应，及时断开开关设备以确保故障无蔓延扩大趋势，对故障元件损坏程度的减
4、轻也起到很好作用，为故障解除后的电力系统同步运行的安全稳定的实现奠定基础Tostrengthenthemaintenanceofprotectiverelayingoperation,wcmustfirstunderstandthecharacteristicsoftherelayprotectiondevice,whichcanmeetthebasicrequirementsofoperation.Characteristicsoftherelayprotectiondeviceismainl
5、yinthefollowingaspects:1）reliability.Thereliabilityofrelayprotectiondeviceisthemostcharacteristicfeatures,thefaultoccuiTedintherunningprocessofpowersystem,relayprotectiondeviceintheprotectionactiontomakereliablefaultrange,effectivedisconnectionofexpa
6、ndingthefaultpoint.2）selective.Relayprotectiondevicefailureinpowersystemoperation,canselectivelycutoutfault,switchingequipmentwillbeclosesttothefaultpointintimeoff,toenlargetheeffectivetopreventfailures,powersystemfaultbutalsootherpartsexceptfortheno
7、rmaloperation.3)sensitivity.Relayprotectiondevicesensitivitybysensitivitycoefficienttomeasure,itistoprotecttherangeofabnormalorfaultresponsecapability.4)fast.Whenfaultsoccurinpowersystem,relayprotectiondevicetothefastestspeedtoallowtimelyresponse,dis
8、connectswitchequipmenttoensurethatnofaultspreadtrend,toreducethedamagedegreeoffaultelementsalsoplayaverygoodrole,forpowersystemfaultaftertheliftingofsynchronousoperationsafeandstablefoundationforrealizing二、继电保护运行维护的基木原则Twobasicprinciplesofrelayprotec
