以抽水蓄能电站为主要调频手段的电网AGC控制策略

发布时间：2018-01-31 18:56

本文关键词： 火电-抽蓄电站机组组合发电控制 AGC容量 PSO算法　出处：《华北电力大学》2014年硕士论文　论文类型：学位论文

【摘要】：以抽水蓄能电站为主要调频手段的多源电力系统发电调度策略的研究,旨在提高电力系统频率控制质量和保障电力系统的经济性与稳定性。对水电机组动态特性及机组组合问题进行分析,建立了以充分发挥抽水蓄能电站调节能力、限制火电出力、快速实现区域控制偏差(ACE)调节至零为目的,兼顾火电煤耗经济目标与系统调差时间最短目标,综合考虑库容、机组出力限制等实际问题的约束处理的决策模型。算法实现过程中,引入时间权重W值,将多目标转化为单目标进行寻优处理；通过权值W的动态调整,可实现多源电力系统时间指标与经济指标控制比重的灵活调整。综合考虑现代电力系统新能源并网趋势,风电机组功率偏差被纳入区域控制偏差(ACE)信号组成结构,提出了风电透极限功率分区控制与AGC容量调整的思路,并建立风电扰动、火电-抽蓄机组调节的发电控制系统模型。研究了计及风电扰动的ACE模型下的多源电力AGC系统,仿真证明新系统在抑制较大功率波动方面较传统AGC系统具有相对更好的频率控制效果。
[Abstract]:Research on Generation scheduling Strategy of Multi-source Power system with pumped Storage Power Station as the main FM method. In order to improve the quality of frequency control in power system and ensure the economy and stability of power system, the dynamic characteristics of hydropower unit and the problems of unit combination are analyzed, and the regulating ability of pumped storage power station is established. The purpose of limiting thermal power output and realizing regional control deviation adjustment to zero is to take into account the economic goal of coal consumption of thermal power and the shortest time of system adjustment, and to consider the storage capacity synthetically. Decision model for constrained processing of practical problems such as generating force limitation. In the process of implementation of the algorithm, the time weight W value is introduced, and the multi-objective is transformed into single objective for optimization processing. Through dynamic adjustment of weight W, the control proportion of time index and economic index of multi-source power system can be adjusted flexibly. Considering the trend of grid connection of new energy in modern power system, the power deviation of wind turbine is incorporated into the structure of ACE-signal. The paper puts forward the idea of district control of wind power permeable limit power and AGC capacity adjustment, and establishes wind power disturbance. The power generation control system model of thermal power pumped storage unit. The multi-source power AGC system based on ACE model with wind disturbance is studied. Simulation results show that the new system has a better frequency control effect than the traditional AGC system in restraining large power fluctuations.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV743

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