同煤科技
同煤科技
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SCIENCE AND TECHNOLOGY OF DATONG COAL MINING ADMINISTRATION
2014年
3期
22-24
,共3页
矿山电工%井下供电与设备%矿山输电与配电%分布式区域保护
礦山電工%井下供電與設備%礦山輸電與配電%分佈式區域保護
광산전공%정하공전여설비%광산수전여배전%분포식구역보호
mine electrotechnics%underground power supply and equipment%mine power transmission and distribution%distributed region protection
目前，煤矿供电系统常采用电流差动、系统判别、集中保护、总线通信等防越级跳闸保护的措施。这几种措施实现成本高、实际操作复杂性高、难以满足相关继电保护规程的标准和要求。在煤矿电网中采用分布式区域保护方式，集中更换或加装矿井井下及关联的地面变电所高压开关综合防越级跳闸等保护装置，可有效减小井下大面积停电，避免引起井下瓦斯积聚，消除威胁矿井的安全事故。
目前，煤礦供電繫統常採用電流差動、繫統判彆、集中保護、總線通信等防越級跳閘保護的措施。這幾種措施實現成本高、實際操作複雜性高、難以滿足相關繼電保護規程的標準和要求。在煤礦電網中採用分佈式區域保護方式，集中更換或加裝礦井井下及關聯的地麵變電所高壓開關綜閤防越級跳閘等保護裝置，可有效減小井下大麵積停電，避免引起井下瓦斯積聚，消除威脅礦井的安全事故。
목전，매광공전계통상채용전류차동、계통판별、집중보호、총선통신등방월급도갑보호적조시。저궤충조시실현성본고、실제조작복잡성고、난이만족상관계전보호규정적표준화요구。재매광전망중채용분포식구역보호방식，집중경환혹가장광정정하급관련적지면변전소고압개관종합방월급도갑등보호장치，가유효감소정하대면적정전，피면인기정하와사적취，소제위협광정적안전사고。
At present, coal mine power supply system often uses preventing override trip protection measures such as current differential protection, system identification, centralized protection and bus communication etc. The cost is high, the actual operation complexity is high and it is hard to meet relevant standards and requirements of the relay protection regulations by using these measures. By using the distributed region protection in coal mine grid, the protection device can effectively reduce the downhole blackouts, avoid downhole gas accumulation, eliminate the threat of mine safety accidents.
