CAJ | 학술논문

传统最优潮流(OPF)虽然将电网的经济性、安全性和电能质量进行了很好的统一,但在其数学模型中,仅考虑了电网线路的电气模型,而忽略了实际情况下线路的电热耦合关系,因此采用传统 OPF 计算结果作为实际电网调度运行的参考有着较大的偏差。在电热协调理论的基础上,根据线路温度和线路电阻之间的电热联系,建立了考虑电热耦合关系的温度 OPF 模型。此外,为进一步提高算法的计算效率,对电、热模型进行解耦计算,然后基于内点法进行求解。最后,通过对IEEE 5节点系统,MATPOWER 中的 Case 30、Case 2736、Case 3012节点系统以及一个实际1856节点系统进行仿真测试,验证了该模型和算法的有效性与正确性。
전통최우조류(OPF)수연장전망적경제성、안전성화전능질량진행료흔호적통일,단재기수학모형중,부고필료전망선로적전기모형,이홀략료실제정황하선로적전열우합관계,인차채용전통 OPF 계산결과작위실제전망조도운행적삼고유착교대적편차。재전열협조이론적기출상,근거선로온도화선로전조지간적전열련계,건립료고필전열우합관계적온도 OPF 모형。차외,위진일보제고산법적계산효솔,대전、열모형진행해우계산,연후기우내점법진행구해。최후,통과대IEEE 5절점계통,MATPOWER 중적 Case 30、Case 2736、Case 3012절점계통이급일개실제1856절점계통진행방진측시,험증료해모형화산법적유효성여정학성。
Despite the overall consideration by the conventional optimal power flow(OPF)of the economy,safety and quality of power system,the OPF model is based only on the electric model to the neglect of the branch thermal model,which is a great deviation from the dispatch of an actual power system.On the basis of the theory of electric coordination and the relationship between resistance and temperature of the branch,a temperature-dependent OPF model with electro-thermal coupling is proposed.To further improve the efficiency of the algorithm,the electric model and thermal model are decoupled and then solved by the interior-point method.Finally,it is shown by the simulation results of IEEE 5-bus,Case 30-,2736-,and 3012-bus of MATPOWER and actual 1856-bus test systems that the proposed model and method are successful and correct.