赤峰某风电基地的有功功率紧急控制策略研究

发布时间：2018-01-20 18:05

本文关键词： 电力系统切机风电基地紧急控制电力系统稳定　出处：《华北电力大学(北京)》2016年硕士论文　论文类型：学位论文

【摘要】：随着我国规划的九个千万千瓦级风电基地的逐步建设投产,电力系统中风电装机容量的比例显著提高。大规模波动性风电往往采取“风电火电打捆”的方式外送至其他高负荷区域电网进行消纳,在贡献社会效益的同时,对电力系统的稳定运行也带来新问题。本文首先对赤峰某风电基地实际电网进行了暂态过程仿真,说明了风电基地有功功率紧急控制措施的必要性；通过分析风电基地的有功功率紧急控制与常规同步机组的差异性,确定了适用于风电基地有功功率紧急控制方法,提出了4种风电基地有功功率紧急切除算法；最后,针对赤峰某风电基地的有功功率紧急控制策略具体实施方案进行了验证,确定了适合该风电基地的最优的控制策略。具体工作如下：(1)以赤峰某风电基地实际电网为例,利用PSD-BPA软件搭建了动稳态仿真模型,分别对故障下无切机与故障下有风电火电组合切机这两种情况进行了暂态过程仿真和分析,指出了风电基地有功功率紧急切机措施的必要性。(2)比较了常规电厂中包括切机、快关汽门、电气制动的有功功率紧急控制手段,重点分析了风电基地有功功率紧急控制的特性,得出切风电场和场内切机组这两种措施能够满足要求。建立了采用风电场组合的风电基地有功紧急切除方法、考虑风电场公平分配的有功紧急切除方法、采用风电场与场内风机组合的风电基地有功紧急切除方法以及采用风电场中单位容量累积切机次数排序的风电基地有功紧急切除方法。并以控制偏差值、求解难度、参与控制的风电场数、风电机组切机数、运营经济性、单位容量累积切机次数方差这6个指标综合评价各控制方法的性能。(3)结合赤峰某风电基地制定了有功功率紧急控制策略,对具体实施方案进行了验证,通过对四种方法六个指标的全方位比较分析,确定了适用于该风电基地的最佳控制策略。
[Abstract]:Along with the planned nine million kilowatts of wind power base construction and production. The proportion of wind power installed capacity in power system has been increased significantly. Large-scale fluctuating wind power is often sent out to other high-load regional power grid by "wind power bundling", which contributes to the social benefits at the same time. It also brings new problems to the stable operation of power system. Firstly, the transient process simulation of the actual power grid of a wind power base in Chifeng shows the necessity of the emergency control measures of active power in the wind power base. By analyzing the difference between active power emergency control and conventional synchronous unit in wind power base, the method of active power emergency control for wind power base is determined, and four kinds of active power emergency excision algorithms for wind power base are put forward. Finally, the active power emergency control strategy of a wind power base in Chifeng is verified. The optimal control strategy for the wind power base is determined. The specific work is as follows: 1) taking the actual power network of a certain wind power base in Chifeng as an example, the dynamic and steady state simulation model is built by using PSD-BPA software. The transient process simulation and analysis are carried out for the two cases of non-cutting machine under fault and combined cutting machine with wind power and power under fault respectively. This paper points out the necessity of emergency cutting measures for active power in wind power base, and compares the emergency control methods of active power in conventional power plants, including cutting machine, fast closing valve and electric braking. The characteristics of active power emergency control in wind power base are analyzed emphatically, and it is concluded that the two measures of cutting wind farm and cutting unit in the field can meet the requirements, and a method of active power emergency removal of wind power base using wind farm combination is established. The method of active power emergency removal considering the fair distribution of wind farm. The active power emergency removal method of wind power base combined with wind farm and field fan is adopted, and the method of active power emergency removal of wind power base based on the order of accumulative cutting times of unit capacity in wind farm is adopted, and the deviation value is controlled. It is difficult to solve, the number of wind farms participating in the control, the number of wind turbine cutting machines, and the operation economy. The six indexes, which are the variance of cumulative cutting times per unit capacity, synthetically evaluate the performance of each control method. (3) combined with a wind power base in Chifeng, the active power emergency control strategy is formulated, and the concrete implementation scheme is verified. By comparing and analyzing the six indexes of the four methods, the optimal control strategy for the wind power base is determined.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM614

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