电力系统紧急情况下的风电集群有功功率控制研究

发布时间：2018-01-16 15:30

本文关键词：电力系统紧急情况下的风电集群有功功率控制研究　出处：《华北电力大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着风电技术的快速发展和装机容量的不断增加,规模化风电集群并网将对电力系统的安全、稳定、经济运行产生诸多影响。在此背景下,本文首先以实际风电集群为例进行风速扰动和大干扰下的风电集群特性仿真；在此基础上,通过分析常规火电厂的有功功率紧急控制手段,提出了适用于风电集群有功功率控制手段和风电集群紧急切功率分配算法,并对所提分配算法进行了定量比较；然后研究了包括风电集群、光伏集群和常规电源的风光水火集群有功功率紧急控制策略,进而提出了基于快调序列和切机序列的有功功率切除量分配算法。具体来说,主要工作如下： (1)以实际风电集群为例,对变风速和大扰动下的风电集群特性做了仿真和分析。 (2)分析了风电场紧急功率切除的方式,进而提出了基于切场组合、基于风电场切机、基于切场与场内切机相结合和基于风电场累计有功功率切除量排序的4种不同的紧急切功率分配算法；其次以分配偏差量、风电场切场数等5个指标的加权组合构建综合评价指标以评估各算法的性能；最后以某实际风电集群为例,验证所提算法的有效性。分配结果和综合评价指标值表明4种分配算法都有各自的适用范围,其中基于风电场累计有功功率切除量排序的方法综合指标值最小,适用范围最大。 (3)给出了风光水火集群有功功率紧急控制原则、控制方式及其特性,在假定所有常规机组都是直调机组的条件下,给出基于快调序列(机组快关气门、切机风电场或切机光伏电站)和切机(常规机组切机、风电场切场或光伏电站切站)序列的风光水火集群有功功率的分配方法。其中快调序列和切机序列的确定方法有两种。最后以某实际风光水火集群为例,验证所提算法的有效性。
[Abstract]:With the rapid development of wind power technology and the continuous increase of installed capacity, large-scale wind power cluster will have a lot of impact on the security, stability and economic operation of power system. Firstly, the simulation of wind power cluster characteristics under wind speed disturbance and large disturbance is carried out by taking the actual wind power cluster as an example. On this basis, by analyzing the emergency control methods of active power in conventional thermal power plants, the active power control methods for wind power clusters and the emergency power allocation algorithm for wind power clusters are proposed. The proposed allocation algorithm is compared quantitatively. Then, the active power emergency control strategy of wind power cluster, photovoltaic cluster and conventional power supply is studied. Furthermore, the active power excising quantity allocation algorithm based on klystron sequence and cutting machine sequence is proposed. Specifically, the main work is as follows: 1) taking actual wind power cluster as an example, the characteristics of wind power cluster under variable wind speed and large disturbance are simulated and analyzed. (2) the paper analyzes the mode of emergency power removal in wind farm, and then puts forward the method based on tangential field combination and wind farm cutting machine. Based on the combination of the tangent field and the in-field cutting machine, and based on the order of the cumulative active power removal amount of the wind farm, four different kinds of emergency power allocation algorithms are proposed. Secondly, a comprehensive evaluation index is constructed to evaluate the performance of each algorithm by the weighted combination of five indexes, such as distribution deviation, wind farm tangent field number and so on. Finally, taking an actual wind power cluster as an example, the validity of the proposed algorithm is verified. The allocation results and the comprehensive evaluation index values show that each of the four allocation algorithms has their own scope of application. The method based on the sorting of cumulative active power of wind farm has the smallest comprehensive index value and the largest applicable range. The principle, control mode and characteristics of active power emergency control are given. Under the assumption that all conventional units are direct-regulated units, the fast adjusting sequence is given. Cutting machine wind farm or cutting machine photovoltaic power station) and cutting machine (conventional unit cutting machine). There are two methods to determine the active power of the wind farm cutting field or photovoltaic power plant (PV power station) cluster. Finally, a practical example is given to the actual wind water fire cluster with two methods to determine the fast adjustment sequence and the cutting machine sequence. The validity of the proposed algorithm is verified.
【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】：TM614

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