CAJ | 학술논문

随着分布式能源资源的大量入网,其出力的间歇性、波动性增大了电力系统运行风险,提高了电网调度的难度.为此,提出考虑电网运行风险的发用电一体化调度方法,该调度方案同时考虑经济和风险2个优化目标:一方面保证系统运行的可靠性水平,使得系统有能力规避高风险的故障;另一方面优化配置发电侧和用户侧资源,减小时段内的峰谷差,增大分布式能源的消纳能力,降低系统运行费用.在调度模型中提出并引入基于可再生能源出力预测的发电侧补偿系数曲线,以此促进需求侧对于间歇性能源的响应,最大限度地发挥发用电一体化调度的作用.最后,以IEEE-RTS79测试系统为算例,验证了该调度模式的科学性和可实践性.
수착분포식능원자원적대량입망,기출력적간헐성、파동성증대료전력계통운행풍험,제고료전망조도적난도.위차,제출고필전망운행풍험적발용전일체화조도방법,해조도방안동시고필경제화풍험2개우화목표:일방면보증계통운행적가고성수평,사득계통유능력규피고풍험적고장;령일방면우화배치발전측화용호측자원,감소시단내적봉곡차,증대분포식능원적소납능력,강저계통운행비용.재조도모형중제출병인입기우가재생능원출력예측적발전측보상계수곡선,이차촉진수구측대우간헐성능원적향응,최대한도지발휘발용전일체화조도적작용.최후,이IEEE-RTS79측시계통위산례,험증료해조도모식적과학성화가실천성.
As large number of distributed energy resources are integrated into grid, their intermittent and volatile output increases operation risk of power system and dispatching difficulty. This paper proposes a scheduling method with generation and load integrated on grid operation risk. The scheduling scheme considers two optimization objectives of economy and risk simultaneously: on one hand, guarantee reliability level, making system able to avoid fault of high risk; on the other hand, optimize allocation of resource on generation and user side to decrease peak-valley difference in one period, improving DE absorptive capacity, and to reduce system operation cost. Moreover, this paper introduced generation side compensation coefficient curve into scheduling model based on renewable energy output prediction, so as to promote demand side response to intermittent energy and maximize the role of scheduling scheme. Finally, this paper takes IEEE-RTS79 system as example to validate the scheme's scientificity and practicableness.