CAJ | 학술논문

提出了制定大规模电力系统运行方式的三种多平衡机潮流模型。通过设置多台平衡机分摊全系统不平衡功率来提高潮流计算收敛域。与常规潮流计算方法相比，只需采用控制方程替换平衡机的功率平衡方程即可得到适定的多平衡机潮流方程式。所提出的模型不但可以扩大潮流求解的收敛域，还可以满足对运行方式的特殊要求：维持中枢点电压为指定值，灵活控制各平衡机出力比例，实现多区域互联系统断面功率控制。所提出的多平衡机潮流模型阶数与常规潮流模型相同，因此其求解的复杂性保持不变。IEEE 162节点系统、陕甘1265节点互联系统以及国内实际21479节点系统的计算结果验证了所提出模型的正确性和有效性。
제출료제정대규모전력계통운행방식적삼충다평형궤조류모형。통과설치다태평형궤분탄전계통불평형공솔래제고조류계산수렴역。여상규조류계산방법상비，지수채용공제방정체환평형궤적공솔평형방정즉가득도괄정적다평형궤조류방정식。소제출적모형불단가이확대조류구해적수렴역，환가이만족대운행방식적특수요구：유지중추점전압위지정치，령활공제각평형궤출력비례，실현다구역호련계통단면공솔공제。소제출적다평형궤조류모형계수여상규조류모형상동，인차기구해적복잡성보지불변。IEEE 162절점계통、협감1265절점호련계통이급국내실제21479절점계통적계산결과험증료소제출모형적정학성화유효성。
Three multi-balancing machine load flow models for planning the operation mode of the large-scale power system are presented.The mismatch power of the entire system is apportioned by several slack nodes to improve the convergence region. Differ from conventional load flow model,by replacing the power balancing equations of the balancing machines,we can derive the properly constrained multi-balancing machines load flow equations. The proposed models can not only enlarge the convergence domain of load flow,but also satisfy special requirements of the operation mode such as maintain the central bus voltage as the designated value,flexibly distribute the power of balancing machines and control the cross section power of the interconnected system.Since the order of the load flow equations of the proposed models is the same as that of the conventional model,the calculation difficulty of the proposed models remains unchanged.Simulation results of an IEEE 1 62-bus system, the Shaanxi-Gansu 1 265-node interconnected system and the actual large-scale 21 479-node interconnected system show the correctness and effectiveness of the proposed models. This work is supported by State Grid Corporation of China,Major Projects on Planning and Operation Control of Large Scale Grid(No.SGCC-MPLG030-2012).