风光储互补系统容量优化配置及短路电流特性研究

发布时间：2018-04-27 18:27

本文选题：风光储互补系统 + 容量优化配置　；参考：《哈尔滨工业大学》2014年硕士论文

【摘要】：开发新能源是解决能源危机与环境污染的一项重大举措。风光储互补系统充分利用风、光资源在时间、空间上的互补性，加上储能装置的能量调节作用，能输出较平稳功率，增加了电网对风、光资源的接纳程度。本文主要研究互补系统建设规划阶段的容量优化配置方法和运行阶段的短路电流特性及对联络线继电保护的影响两方面。首先，本文在研究风光储互补系统原理、结构、运行方式的基础上，建立了以抽水蓄能电站为储能装置、工程寿命内总收益最大为目标函数、风光资源互补性、风光资源利用率、输出跟踪负荷曲线等为约束条件的大规模互补发电系统容量优化配置模型，并提出了一种变步长循环离散求解算法。其次，在建立了双馈式风力发电机组、光伏发电系统、抽水蓄能机组的暂态模型基础上，建立了交流母线组网型互补发电系统的PSCAD暂态仿真模型。并通过研究风速、光强等环境因素变化时的互补系统输出特性，验证了仿真模型的正确性。最后，，基于风光储互补系统的PSCAD暂态仿真模型，研究了最优容量配置下互补发电系统三相短路、单相接地、两相接地、两相短路时的短路电流特性，详细分析了风速、光强、抽水蓄能机组运行状态、撬棒保护动作状态以及风、光、储容量配比对三相短路电流特性的影响。论文对比分析了互补发电系统与常规电源短路电流特性的差异，并在此基础上研究了互补系统并网后对联络线上三段式零序电流保护、三段式相间距离保护的影响。论文研究成果对风光储互补系统的设计和安全稳定运行具有指导意义和实用价值。本文工作得到国家高技术研究发展计划（863计划）重大项目《高渗透率间歇性能源的区域电网关键技术研究和示范》（2011AA05A105）的资助。
[Abstract]:The development of new energy is an important measure to solve the energy crisis and environmental pollution. The complementary system makes full use of wind and light resources in time and space together with the energy regulation of energy storage device to output more stable power and increase the acceptance of wind and light resources in the power grid. In this paper, the optimal configuration of capacity in the construction planning phase of complementary system and the short-circuit current characteristics in the operation phase and the influence on the relay protection of the tie-line are studied in this paper. First of all, on the basis of studying the principle, structure and operation mode of the wind and storage complementary system, this paper establishes a pumped-storage power station as the energy storage device, the maximum total income in the project life as the objective function, and the complementarity of the scenery and resources. A capacity optimization model for large-scale complementary generation systems with constraints such as wind resource utilization and output tracking load curves is proposed. A variable step size cyclic discrete solution algorithm is proposed. Secondly, on the basis of the transient model of doubly-fed wind turbine, photovoltaic system and pumped storage unit, the PSCAD transient simulation model of AC busbar netted complementary generation system is established. The correctness of the simulation model is verified by studying the output characteristics of the complementary system when the environmental factors such as wind speed and light intensity change. Finally, based on the PSCAD transient simulation model of wind-storage complementary system, the short-circuit current characteristics of the complementary generation system with three-phase short circuit, single-phase earthing and two-phase short circuit under the optimal capacity configuration are studied, and the wind speed and light intensity are analyzed in detail. The effects of the operation state of pumped storage unit, the operation state of crowbar protection and the ratio of wind, light and storage capacity on the characteristics of three-phase short-circuit current. In this paper, the difference of short circuit current characteristics between complementary generation system and conventional power supply is analyzed, and the influence of complementary system on three-segment zero-sequence current protection and three-segment inter-phase distance protection on tie line is studied. The research results of this paper are of guiding significance and practical value for the design and safe and stable operation of the complementary system of scenery storage and storage. This paper is supported by the National High Technology Research and Development Program (NRDP), "Research and demonstration of key Technologies in Regional Power Grid with High permeability intermittent Energy" (2011AA05A105).
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM61

【相似文献】