电机与控制学报
電機與控製學報
전궤여공제학보
Electric Machines and Control
2015年
8期
9-14,21
,共7页
陈任峰%黄少伟%王志文%吴迪%王健%陈晓东
陳任峰%黃少偉%王誌文%吳迪%王健%陳曉東
진임봉%황소위%왕지문%오적%왕건%진효동
微电网保护%分层式结构%集中式继电保护%储能快速出力调节
微電網保護%分層式結構%集中式繼電保護%儲能快速齣力調節
미전망보호%분층식결구%집중식계전보호%저능쾌속출력조절
protection scheme%hierarchical structure%centralized relay protection%fast storage output regulation
光伏微电网具有短路电流幅值小、潮流方式灵活、储能容量比例高等特点,其可靠运行需要有完善的保护体系予以支撑. 针对上述需求,设计分层式的微电网综合保护体系. 该体系以期尽量减小微电网发生故障造成的损失为目标,由基于相位与幅值比较的集中式继电保护、快速储能出力调节控制和紧急控制策略等三部分构成. 进一步,通过在PSCAD/EMTDC环境中构建了微电网仿真模型,分析对比了所设计的分层式综合保护体系与传统防护方式的性能差异,验证了分层式综合保护体系的有效性和实用性.
光伏微電網具有短路電流幅值小、潮流方式靈活、儲能容量比例高等特點,其可靠運行需要有完善的保護體繫予以支撐. 針對上述需求,設計分層式的微電網綜閤保護體繫. 該體繫以期儘量減小微電網髮生故障造成的損失為目標,由基于相位與幅值比較的集中式繼電保護、快速儲能齣力調節控製和緊急控製策略等三部分構成. 進一步,通過在PSCAD/EMTDC環境中構建瞭微電網倣真模型,分析對比瞭所設計的分層式綜閤保護體繫與傳統防護方式的性能差異,驗證瞭分層式綜閤保護體繫的有效性和實用性.
광복미전망구유단로전류폭치소、조류방식령활、저능용량비례고등특점,기가고운행수요유완선적보호체계여이지탱. 침대상술수구,설계분층식적미전망종합보호체계. 해체계이기진량감소미전망발생고장조성적손실위목표,유기우상위여폭치비교적집중식계전보호、쾌속저능출력조절공제화긴급공제책략등삼부분구성. 진일보,통과재PSCAD/EMTDC배경중구건료미전망방진모형,분석대비료소설계적분층식종합보호체계여전통방호방식적성능차이,험증료분층식종합보호체계적유효성화실용성.
Dealing with the special features of the micro-grid such as small short-circuit current, bidirec-tonal power flow, and high proportion for energy storage system, the protection of the PV based micro-grid should be carefully designed to guarantee the reliable operation of micro-grid. A hierarchical compre-hensive protection system was proposed to minimize the load loss of the micro-grid when faults occur. The protection system has three main functions, including relay protection scheme based on phase and magni-tude comparison, fast storage output regulation and emergency control. A test micro-grid with energy stor-age system was setup in PSCAD/EMTDC, based on which simulations were carried out for various faults situations. By comparing the performance of the proposed protection system and traditional protection scheme, the effectiveness and practicality of the proposed hierarchical comprehensive protection system was verified.