大规模新能源接入后系统调峰能力与 常规电源开机方式关系研究

近年来，风、光电等新能源发展迅速，而相配套的水、火电等常规能源发展速度放缓，且在电网并网电源结构中，所占比例呈逐年下降趋势。以某电网为例，从风电反调峰出现概率、风电对电网负荷波动的实时贡献率指标以及光电的出力特性等几方面分析大规模新能源系统接入电网后对系统调峰产生的影响。并对该电网水、火电等常规电源的现有开机方式与系统调峰之间的关系进行了研究。在此基础上核算出该电网的调峰能力以及能够接纳风、光电等新能源的规模。

Research on relationship between the capacity of systematic peak regulation and conventional power startup mode after access to large-scale new energy

New energy including wind and photovoltaics develops rapidly in recent years, while the corresponding normal energy, such as water, thermal power and so on, is slowing down. Simultaneously, the ratio of normal energy goes down in the structure of grid network connected power with each passing year. This paper researches the effect of the large-scale new energy access to power grid on system peak regulation, which is based on the probability of wind power peak shaving, the real-time contribution made by wind power to the burden of grid, and photovoltaic output characteristics. In addition, the relationship between the available power-on mode of conventional power source and the systematic peak regulation is also studied. Consequently, the ability of peak regulation and the scale to taking in wind sources are obtained.