储能在风火联合电力系统中的容量优化研究

Research on Capacity Optimization of Energy Storage in Wind and Fire Combined Power Systems

摘要: 随着科技的发展和进步，以风力为基础的可再生能源开始崭露头角，逐渐替代传统发电并在社会上得到广泛应用。大规模风电并网给电力系统安全稳定运行带来了新的挑战，储能系统在提高风电接入能力方面具有广阔的应用前景，然而储能的高容量成本制约了风火联合电力系统的发展。本文在考虑风电出力波动性和火电机组运行约束的基础上，研究了储能在风火联合电力系统中的优化配置策略。在失负荷损失尽可能小的前提下，通过合理配置储能容量，平抑风电场输出功率的波动性，使得风火联合电力系统和储能系统的发电总成本达到最优，从而提高整个系统的运行经济效率。

Abstract: With the development and progress of science and technology, wind based renewable energy began to emerge, gradually replacing the traditional power generation and widely used in society. Large-scale wind power grid-connection has brought new challenges to the safe and stable operation of the power system. The energy storage system has a broad application prospect in improving the access capacity of wind power. However, the high capacity cost of energy storage restricts the development of wind-fire combined power system. Based on the consideration of wind power out-put volatility and thermal power unit operation constraints, this paper studies the optimal allocation strategy of energy storage in wind-fire combined power system. Under the premise that the loss of load is as small as possible, the output power volatility of wind farm is suppressed by rational allocation of energy storage capacity, so that the total power generation cost of wind-fire combined power system and energy storage system can be optimized, so as to improve the economic efficiency of the whole system.