合肥工业大学学报(自然科学版)
閤肥工業大學學報(自然科學版)
합비공업대학학보(자연과학판)
Journal of Hefei University of Technology (Natural Science)
2015年
10期
1328-1332
,共5页
太阳能应用技术%分布式光伏%配电网保护%引入电流量%功率方向纵联保护
太暘能應用技術%分佈式光伏%配電網保護%引入電流量%功率方嚮縱聯保護
태양능응용기술%분포식광복%배전망보호%인입전류량%공솔방향종련보호
solar application technology%distributed photovoltaic(PV) system%distribution networks protection%current introduction%power direction longitudinal protection
随着太阳能应用技术的进步和国家政策扶持力度的加大,越来越多的分布式光伏电源并入配电网中,对原有的配电网保护造成了巨大的影响。文章通过分析光伏并网对配电网保护的影响,根据已有的解决方案,并结合光伏自身输出的周期性、随机性和间歇性,提出了一种引入电流量的功率方向纵联保护方案,对不同线路的保护进行了完善,并在PSCAD/EM TDC软件中进行了仿真验证。结果表明,该保护方案不受光伏运行方式的影响而可靠地进行保护动作,在实践中具有可行性。
隨著太暘能應用技術的進步和國傢政策扶持力度的加大,越來越多的分佈式光伏電源併入配電網中,對原有的配電網保護造成瞭巨大的影響。文章通過分析光伏併網對配電網保護的影響,根據已有的解決方案,併結閤光伏自身輸齣的週期性、隨機性和間歇性,提齣瞭一種引入電流量的功率方嚮縱聯保護方案,對不同線路的保護進行瞭完善,併在PSCAD/EM TDC軟件中進行瞭倣真驗證。結果錶明,該保護方案不受光伏運行方式的影響而可靠地進行保護動作,在實踐中具有可行性。
수착태양능응용기술적진보화국가정책부지력도적가대,월래월다적분포식광복전원병입배전망중,대원유적배전망보호조성료거대적영향。문장통과분석광복병망대배전망보호적영향,근거이유적해결방안,병결합광복자신수출적주기성、수궤성화간헐성,제출료일충인입전류량적공솔방향종련보호방안,대불동선로적보호진행료완선,병재PSCAD/EM TDC연건중진행료방진험증。결과표명,해보호방안불수광복운행방식적영향이가고지진행보호동작,재실천중구유가행성。
With the advancement of solar application technology and national policy support ,more and more photovoltaic(PV) systems are incorporated into distribution system ,which leads to great effect on original distribution system protection . According to the existing solutions and the periodicity , randomness and intermittence of PV output ,a power direction longitudinal protection scheme which introduces the current is proposed by analyzing the impact caused by grid‐connected photovoltaic sys‐tem on the distribution system protection .And the protection scheme of various lines is improved . The scheme is verified by PSCAD/EM TDC simulation .The results show that the protection scheme with simple principle can act reliably almost without the influence of PV operation mode ,and has the feasibility in practice .