With the rapid and large-scale development of renewable energy, the lack of new energy power transportation or consumption, and the shortage of grid peak-shifting ability have become increasingly serious. Aiming to th...With the rapid and large-scale development of renewable energy, the lack of new energy power transportation or consumption, and the shortage of grid peak-shifting ability have become increasingly serious. Aiming to the severe wind power curtailment issue, the characteristics of interactive load are studied upon the traditional day-ahead dispatch model to mitigate the influence of wind power fluctuation. A multi-objective optimal dispatch model with the minimum operating cost and power losses is built. Optimal power flow distribution is available when both generation and demand side participate in the resource allocation. The quantum particle swarm optimization (QPSO) algorithm is applied to convert multi-objective optimization problem into single objective optimization problem. The simulation results of IEEE 30-bus system verify that the proposed method can effectively reduce the operating cost and grid loss simultaneously enhancing the consumption of wind power.展开更多
A new versatile optimization, the particle swarm optimization based on multi-agent system (MAPSO) is presented. The economic load dispatch (ELD) problem of power system can be solved by the algorithm. By competing and...A new versatile optimization, the particle swarm optimization based on multi-agent system (MAPSO) is presented. The economic load dispatch (ELD) problem of power system can be solved by the algorithm. By competing and cooperating with the randomly selected neighbors, and adjusting its global searching ability and local exploring ability, this algorithm achieves the goal of high convergence precision and speed. To verify the effectiveness of the proposed algorithm, this algorithm is tested by three different ELD cases, including 3, 13 and 40 units IEEE cases, and the experiment results are compared with those tested by other intelligent algorithms in the same cases. The compared results show that feasible solutions can be reached effectively, local optima can be avoided and faster solution can be applied with the proposed algorithm, the algorithm for ELD problem is versatile and efficient.展开更多
以电采暖为代表的新兴负荷灵活运行能力强,利用其可调能力提升中高压配电网运行安全水平成为“源荷互动”在配电网场景下的重要需求。面对中高压配电网安全运行中网络参数辨识困难与源荷协同复杂度高的双重挑战,提出一种基于数据挖掘的...以电采暖为代表的新兴负荷灵活运行能力强,利用其可调能力提升中高压配电网运行安全水平成为“源荷互动”在配电网场景下的重要需求。面对中高压配电网安全运行中网络参数辨识困难与源荷协同复杂度高的双重挑战,提出一种基于数据挖掘的电采暖负荷优化调度方法。首先,建立融合设备热动态特性和用户舒适度约束的电采暖负荷精细化调节模型,量化分析其调控成本;其次,构建计及光伏出力时序特性和网络潮流安全约束的多时段协同优化模型,实现源荷双侧资源的动态匹配;进而,提出基于历史运行数据挖掘的功率转移分布因子(power transfer distribution factor,PTDF)矩阵在线辨识算法,突破传统物理建模对网络参数精度的依赖;最后,设计基于二次规划的高效求解策略,生成兼顾电网安全和用户需求的最优调控方案。基于IEEE 30系统的仿真结果表明:所提方法可有效避免关键线路和变压器重过载,同时可在不影响用户供暖情况下尽量降低调节代价,实现源网荷高效互动协同。展开更多
This paper presents the existing state anddevelopment planning of East China PowerSystem, which refers to load, power source,power network, system protection, dispatchautomation and system communication.
文摘With the rapid and large-scale development of renewable energy, the lack of new energy power transportation or consumption, and the shortage of grid peak-shifting ability have become increasingly serious. Aiming to the severe wind power curtailment issue, the characteristics of interactive load are studied upon the traditional day-ahead dispatch model to mitigate the influence of wind power fluctuation. A multi-objective optimal dispatch model with the minimum operating cost and power losses is built. Optimal power flow distribution is available when both generation and demand side participate in the resource allocation. The quantum particle swarm optimization (QPSO) algorithm is applied to convert multi-objective optimization problem into single objective optimization problem. The simulation results of IEEE 30-bus system verify that the proposed method can effectively reduce the operating cost and grid loss simultaneously enhancing the consumption of wind power.
文摘A new versatile optimization, the particle swarm optimization based on multi-agent system (MAPSO) is presented. The economic load dispatch (ELD) problem of power system can be solved by the algorithm. By competing and cooperating with the randomly selected neighbors, and adjusting its global searching ability and local exploring ability, this algorithm achieves the goal of high convergence precision and speed. To verify the effectiveness of the proposed algorithm, this algorithm is tested by three different ELD cases, including 3, 13 and 40 units IEEE cases, and the experiment results are compared with those tested by other intelligent algorithms in the same cases. The compared results show that feasible solutions can be reached effectively, local optima can be avoided and faster solution can be applied with the proposed algorithm, the algorithm for ELD problem is versatile and efficient.
文摘以电采暖为代表的新兴负荷灵活运行能力强,利用其可调能力提升中高压配电网运行安全水平成为“源荷互动”在配电网场景下的重要需求。面对中高压配电网安全运行中网络参数辨识困难与源荷协同复杂度高的双重挑战,提出一种基于数据挖掘的电采暖负荷优化调度方法。首先,建立融合设备热动态特性和用户舒适度约束的电采暖负荷精细化调节模型,量化分析其调控成本;其次,构建计及光伏出力时序特性和网络潮流安全约束的多时段协同优化模型,实现源荷双侧资源的动态匹配;进而,提出基于历史运行数据挖掘的功率转移分布因子(power transfer distribution factor,PTDF)矩阵在线辨识算法,突破传统物理建模对网络参数精度的依赖;最后,设计基于二次规划的高效求解策略,生成兼顾电网安全和用户需求的最优调控方案。基于IEEE 30系统的仿真结果表明:所提方法可有效避免关键线路和变压器重过载,同时可在不影响用户供暖情况下尽量降低调节代价,实现源网荷高效互动协同。
文摘This paper presents the existing state anddevelopment planning of East China PowerSystem, which refers to load, power source,power network, system protection, dispatchautomation and system communication.
