An improved PSO for dynamic load dispatch of generators with valve-point effects
An improved PSO for dynamic load dispatch of generators with valve-point effects
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DOI：
10.1016/j.energy.2008.09.010
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发表时间：
2009
期刊：
影响因子：
9
通讯作者：
Xiaohui Yuan;Anjun Su;Yanbin Yuan;Hao Nie;Liang Wang
中科院分区：
文献类型：
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作者：
Xiaohui Yuan;Anjun Su;Yanbin Yuan;Hao Nie;Liang Wang
动态负荷经济调度问题是电力系统运行中的重要问题，是一个复杂的非线性约束优化问题。当考虑发电机阀点效应时，它具有非光滑和非凸的特性。提出了一种改进的粒子群优化算法（IPSO）来求解具有阀点效应的DLED问题。在IPSO方法中，可行性为基础的规则和启发式策略的优先级列表的基础上的概率设计有效地处理约束。与惩罚函数法相比，约束处理法不需要惩罚因子或任何额外的参数，可以快速地将种群引导到可行域。特别是，等式约束的DLED可以满足精确。此外，还研究了两个关键参数对DLED IPSO性能的影响。通过实例验证了该方法的可行性和有效性，并与文献报道的其他方法的测试结果进行了比较。结果表明，该方法能够产生更高质量的解决方案。
Dynamic load economic dispatch problem (DLED) is important in power systems operation, which is a complicated nonlinear constrained optimization problem. It has nonsmooth and nonconvex characteristics when generator valve-point effects are taken into account. This paper proposes an improved particle swarm optimization (IPSO) to solve DLED with valve-point effects. In the proposed IPSO method, feasibility-based rules and heuristic strategies with priority list based on probability are devised to handle constraints effectively. In contrast to the penalty function method, the constraint-handling method does not require penalty factors or any extra parameters and can guide the population to the feasible region quickly. Especially, equality constraints of DLED can be satisfied precisely. Furthermore, the effects of two crucial parameters on the performance of the IPSO for DLED are also studied. The feasibility and the effectiveness of the proposed method are demonstrated applying it to some examples and the test results are compared with those of other methods reported in the literature. It is shown that the proposed method is capable of yielding higher-quality solutions.