有利于新能源接入的常规高压直流功率调节方法研究(二):理论分析与仿真验证  

Conventional HVDC Power Regulating Method to Improve New Energy Integration Capability(Ⅱ):Theoretical Analysis and Simulation Testification

作　　者：孙玉娇[1] 周勤勇[1] 夏懿[2] 宋汶秦[2] 张中丹[2] SUN Yujiao ZHOU Qinyong XIA Yi SONG Wenqin ZHANG Zhongdan(China Electric Power Research Institute, Beijing 100192, China Gansu Electric Power Research Institute of Economics and Technology, Lanzhou 730050, China)

机构地区：[1]中国电力科学研究院,北京市100192 [2]国网甘肃省电力公司经济技术研究院,兰州市730050

出　　处：《电力建设》2017年第2期91-99,共9页Electric Power Construction

基　　金：国家电网公司科技项目(XT71-14-038)

摘　　要：为提高新能源接入能力,提出有利于新能源接入的常规高压直流功率调节方法,基本思路是计划阶段直流功率与两端电网发电计划协调制定,运行阶段利用紧急旋转备用机组应对新能源功率大幅随机波动、功率预测误差及其他突发事故等,两端电网实时调节应对新能源功率常规波动,最终实现直流两端电网资源优化利用,提高新能源消纳能力及电网运行安全性和经济性。该文通过理论分析和仿真验证证明所提方法的有效性。分析了所提方法对提高新能源消纳能力、系统运行经济性及安全性方面的作用,探讨了应用所提方法时受端电网适应性、直流功率频繁调节的技术可行性及跨区域电网发电计划联合制定的可行性等问题,从多个角度分析了所提方法的优点和可行性。最后,将所提方法应用到某实际直流工程及所联实际大系统中进行全过程动态仿真,观察其应用效果,证明所提方法的有效性。This paper proposes a conventional HVDC power regulating method to improve new energy integration capability, whose basic idea is that in the planning period the DC power and the generation schedule of the two power grids that the HVDC is connected to are coordinately planned and in real time operation period the emergency rotating reserve units are used to deal with the large random fluctuation of new energy power, the large forecast errors of power and other accidents, and the real time regulation of the two power grids is adopted to deal with the regular fluctuation of new energy power, which finally can realize the optimization usage of the two power grids＇ resources, and the improvement of new energy integration capability and the security and economy of power system operation. This paper provides the theoretical analysis and simulation to testify the effectiveness of the proposed method, including analyzing the effects of the proposed method on improving new energy integration capability and the economy and security of system, discussing the adaptability of the receiving-end power grid, the technical feasibility of DC power＇s frequently regulating and the possibility of coordinately making the two power grids＇ generation schedule etc, when using the proposed method, which testifies the advantages and the feasibility of the proposed method from multiple aspects and perspectives. Finally, this paper applies the proposed method in an actual HVDC project with actual large power systems for the whole-time dynamic simulation, and observes its application results, which can prove the effectiveness of the proposed method.

关 键 词：新能源 高压直流 功率曲线 发电计划 实时调节 

分 类 号：TM721[电气工程—电力系统及自动化]