Research on county-level self-balance transaction scheduling strategy for new energy considering section load rate

doi:10.3969/j.issn.2097-0706.2022.07.008

Abstract

Abstract:

The grid-connected new energy is expanding in the context of "dual carbon" targets. But the random and volatile outputs of new energy will affect the safe and stable operation of power systems. In view of the frequent fluctuation of tie lines' section load rates in rural areas,a county-level self-balance transaction scheduling strategy for new energy considering section load rate is proposed. Taking the section load rate into consideration,a joint optimization bi-level transaction model of day-ahead and real-time market is made. The simulation calculation shows that the strategy can significantly improve the local consumption rate of new energy. Compared with the simple physical method taking energy storage technology only, the proposed strategy can relieve the tie line power flow fluctuation, optimize the section load rate and maintain the stability of power grid.

Key words: carbon neutrality, new energy grid connection, section load rate, county, self balance of power, scheduling strategy, new power system

CLC Number:

TK01：TM614

LU Yao, GU Xiaoxi, YIN Shuo, CHEN Xing, JIN Man. Research on county-level self-balance transaction scheduling strategy for new energy considering section load rate[J]. Integrated Intelligent Energy, 2022, 44(7): 66-72.

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类型	额定功率/kW	维护成本/ [美元·(kW·h)^-1]	出力上限/kW	出力下限/kW	爬坡率/（kW·min^-1）
风电机组	140	0.050 0	140	10	5
光伏阵列	180	0.001 6	180	0	—

额定功率/kW	排量/L	压缩比	燃气消耗/ [m³·（kW·h)^-1]	尺寸（长×宽×高）/mm
200	14.0	10.5∶1.0	<0.50	3 000×1 150×1 780
250	18.9	9.5∶1.0	<0.50	3 440×1 550×2 200
300	18.9	9.5∶1.0	<0.50	3 440×1 550×2 200
350	37.8	9.5∶1.0	<0.50	3 440×1 550×2 200
400	37.8	9.5∶1.0	<0.50	4 300×2 300×2 400
450	37.8	9.5∶1.0	<0.50	4 300×2 300×2 400
500	37.8	9.5∶1.0	<0.50	4 300×2 300×2 400
600	50.3	9.5∶1.0	<0.50	5 652×2 286×2 441