运用连续二次规划法计算区域间极限传输容量

区域间功率交换的极限传输容量(TTC)是互联系统电力市场中的一个重要指标。文中运用连续二次规划法进行最优潮流计算，取得相应的TTC。其目标函数是在满足潮流方程和系统运行约束条件下寻求特定发电机群和负荷群之间的传输功率最大值。文中将无功功率作为OPF的控制变量，故节点电压也被优化以得到最大传输容量。采用最优潮流方法可以避免用连续潮流方法计算TTC而较为保守的缺点。给出了有关的数学模型和计算方法及流程。IEEE-30节点系统的计算结果表明了用该方法计算TTC的有效性和实用性。

INTER-AREA TOTAL TRANSFER CAPABILITY CALCULATION USINGSEQUENTIAL QUADRATIC PROGRAMMING METHOD IN POWER MARKET

Inter- area total transfer capability TTC is an im portant index in the power market of interconnected power system s. In this paper sequential quadratic programm ing SQP is used in the optimal power flow OPF approach to calculate the TTC.The objective function is to m axim ize the power transmission between specific generator s and load s subject to the constraints of load flow equations and system operation limits.Since the reactive power generation is taken as a control variable in the OPF formulation,the bus voltages can be optimized to yield maximum TTC.The adopted approach can avoid the conservative TTC results obtained from the continuation power flow method. The mathem atical formulation and TTC calculation procedure are presented. Computer results from the IEEE- 30 bus system show great potential of the proposed method in calculating TTC.