支撑新能源基地电力外送的电源组合优化配置策略研究

Optimization Strategy Study on Installation Mix of Renewable Energy Power Base for Supporting Outbound Delivery

新能源基地化开发和电力外送是实现能源电力清洁低碳转型的重要途径。新能源发电间歇性和波动性以及有限的输电走廊资源要求基地配置调节电源以提高新能源电力外送工程的可靠性和源网利用率。提出了基于广域长期历史气象数据,采用时序生产模拟电源扩展优化模型,进行不同送电方案下调节电源与新能源装机优化组合策略的研究方法。以内蒙古沙漠地区新能源基地为例的研究表明,电化学储能为代表的无源型调节电源应配置为外送通道容量的35%左右,从而实现合理的通道利用率和基地发输电经济性;配置有源型调节电源,可实现更高的外送通道利用率。以送电曲线为研究对象,进一步分析了按照新能源出力特性和考虑受端用电月特性送电两种情景下的调节电源需求变化,提出了新能源多基地联合开发、配置可季节性调整的绿电载能产业等解决思路。

Renewable energy power base development and outbound power delivery is an important way to achieve clean and low-carbon transition in the energy and power sector.Both the intermittency and fluctuation nature of renewable energy power generation and the limited terrain conditions of the power transmission corridor require the power base to be equipped with regulating power source to improve the reliability and utilization of the power delivery project.In this work,we propose a method of strategy study approaching optimized power installation mix of regulating source and renewable energy by using the chronological operation simulation power expansion optimization model,in which wide area long-term historical meteorological data is employed and various power transmission schemes have been considered.Taking the proposed renewable power base in Inner Mongolia desert as an example,it is found that the passive regulating power represented by battery storage should be configured at around 35%of the outbound transmission capacity,so as to achieve reasonable utilization rate of transmission channel and power base generation and delivery cost-effectiveness.The active regulating power deployment can achieve higher utilization rate of delivery channel.Through further research and analysis on the regulating power demand change under conditions of altering the power delivery curve to follow the renewable power output and the receiving-end monthly power demand characteristics,we propose the solutions of joint development on multiple renewable energy power bases and configuring seasonally adjustable green electricity energy carrier industry.