四川电力技术
四川電力技術
사천전력기술
SICHUAN ELECTRIC POWER TECHNOLOGY
2013年
4期
6-9,54
,共5页
周专%姚秀萍%常喜强%申盛召
週專%姚秀萍%常喜彊%申盛召
주전%요수평%상희강%신성소
电力系统功率频率特性%负荷频率特性%负荷调节效应%频率稳定
電力繫統功率頻率特性%負荷頻率特性%負荷調節效應%頻率穩定
전력계통공솔빈솔특성%부하빈솔특성%부하조절효응%빈솔은정
power frequency characteristic of power system%load frequency characteristic%load regulation effect%frequency stability
随着区间电网的互联,各地区的自然资源得到充分的利用。但是有些区间联络线由于输电走廊限制等原因相对较弱,一旦发生解列事故,容易形成送端(受端)孤立电网,将导致局部系统功率严重失衡,系统的频率稳定问题就会凸显出来。同时随着国家经济的发展,各地区的负荷类型比重不相同,负荷模型对系统频率稳定性有很大的影响。以新疆和田地区电网为研究对象,分析负荷频率特性对孤网频率稳定性的影响,通过改变孤网中负荷模型,以及各种负荷在孤网中的比例,得出不同的负荷模型对孤网频率稳定性影响程度不同的结论,并运用PSASP仿真验证了相关结论。对实际电网稳定计算时负荷模型的选取具有重要的参考价值。
隨著區間電網的互聯,各地區的自然資源得到充分的利用。但是有些區間聯絡線由于輸電走廊限製等原因相對較弱,一旦髮生解列事故,容易形成送耑(受耑)孤立電網,將導緻跼部繫統功率嚴重失衡,繫統的頻率穩定問題就會凸顯齣來。同時隨著國傢經濟的髮展,各地區的負荷類型比重不相同,負荷模型對繫統頻率穩定性有很大的影響。以新疆和田地區電網為研究對象,分析負荷頻率特性對孤網頻率穩定性的影響,通過改變孤網中負荷模型,以及各種負荷在孤網中的比例,得齣不同的負荷模型對孤網頻率穩定性影響程度不同的結論,併運用PSASP倣真驗證瞭相關結論。對實際電網穩定計算時負荷模型的選取具有重要的參攷價值。
수착구간전망적호련,각지구적자연자원득도충분적이용。단시유사구간련락선유우수전주랑한제등원인상대교약,일단발생해렬사고,용역형성송단(수단)고립전망,장도치국부계통공솔엄중실형,계통적빈솔은정문제취회철현출래。동시수착국가경제적발전,각지구적부하류형비중불상동,부하모형대계통빈솔은정성유흔대적영향。이신강화전지구전망위연구대상,분석부하빈솔특성대고망빈솔은정성적영향,통과개변고망중부하모형,이급각충부하재고망중적비례,득출불동적부하모형대고망빈솔은정성영향정도불동적결론,병운용PSASP방진험증료상관결론。대실제전망은정계산시부하모형적선취구유중요적삼고개치。
Along with the interconnection of interval power grids , natural resources in different areas have been utilized suffi-ciently .But because of the weakness of some interval links caused by transmission corridor limit and so on , the send-end i-solated power grid and the receiving -end isolated power grid will come into being easily if the splitting accidents happen , which will lead to the serious power imbalance of local system , and some problems about the stability of system frequency will come up.At the same time, along with the economic development of China , the proportion of load type in each area is differ-ent, and the load model has a huge impact on the stability of system frequency .Taking the power grid of Hotian as the objec-tive of the research , the impact of load frequency characteristics on the frequency stability of isolated power grid is analyzed . It is concluded that the different load model will have different impact on the frequency stability of isolated power grid by chan -ging the load model and the proportion of all kinds of load in isolated power grid .The simulation with PSASP verifies the relat-ed conclusions , which has an important reference for the selection of load model during the stability calculation of actual power grid.