Shared Energy Storage Trading Mode of New Energy Station Group Considering Energy Storage Performance Difference

doi:10.12096/j.2096-4528.pgt.22114

Abstract

Abstract:

To clarify the complex coupling relationship between the technical and economic characteristics of energy storage batteries participating in sharing and the price mechanism and income distribution of shared energy storage, a shared energy storage trading mode of the new energy field and station group considering the difference of energy storage performance was proposed. Firstly, the operation mode of the new energy field group shared energy storage based on self-assigned energy storage was proposed to break the constraints of new energy field stations participating in energy storage resource shared interaction. Secondly, considering the health status of batteries in different energy storage resources and the interests of multi-participants in shared energy storage, the price mechanism and income distribution method of shared energy storage on the power generation side considering the different technical and economic characteristics of energy storage units were constructed. Finally, a numerical example was used to verify the feasibility of the proposed generation side shared energy storage trading mode considering the health status of energy storage batteries. The research results provide theoretical and decision support for the economic sustainable development of shared energy storage on the power generation side.

Key words: energy storage, performance difference, new energy station group, shared energy storage, trading mode, price mechanism

CLC Number:

TK 02

Yibo HAO, Xili DU, Xiaozhu LI, Laijun CHEN. Shared Energy Storage Trading Mode of New Energy Station Group Considering Energy Storage Performance Difference[J]. Power Generation Technology, 2022, 43(5): 687-697.

Figures/Tables 13

Fig. 1 Shared energy storage trading mode of new energy station group

Fig. 2 Relationship between health status and cycle times under different capacity retention rates

Tab.1 New energy station strategic game model

编号	合作模式	合作程度
1	$N 1, N 2, N 3$	非合作
2	$N 1, N 2, N 3$	部分合作
3	$N 1, N 3, N 2$	部分合作
4	$N 2, N 3, N 1$	部分合作
5	$N 1, N 2, N 3$	完全合作

Tab.1 New energy station strategic game model

编号	合作模式	合作程度
1	$N 1, N 2, N 3$	非合作
2	$N 1, N 2, N 3$	部分合作
3	$N 1, N 3, N 2$	部分合作
4	$N 2, N 3, N 1$	部分合作
5	$N 1, N 2, N 3$	完全合作

Tab.2 Basic parameters

参数	取值
光伏上网价格/[元/(MW∙h)]	800
风电上网价格/[元/(MW∙h)]	400
$μ p u$ /[元/(MW∙h)]	1 000
$μ e s, i$ /[元/(MW∙h)]	350
贴现率/%	3.24

Tab.2 Basic parameters

参数	取值
光伏上网价格/[元/(MW∙h)]	800
风电上网价格/[元/(MW∙h)]	400
$μ p u$ /[元/(MW∙h)]	1 000
$μ e s, i$ /[元/(MW∙h)]	350
贴现率/%	3.24

Fig. 3 Output and load of new energy stations

Fig. 4 Trading price changes of shared energy storage under different energy storage performances

Tab. 3 Total income changes of new energy stations under different energy storage performances

容量保持率/%	80	60	40
新能源场站总收益/亿元	43.85	42.66	41.59

Fig. 5 Trading volume of shared energy storage serving new energy stations’ own output under different capacity retention rates

Fig. 6 Trading volume of shared energy storage serving other new energy stations output under different capacity retention rates

Fig. 7 Trading volume of shared energy storage serving grid frequency regulation output under different capacity retention rates

Tab. 4 Total income changes of new energy stations under different game modes

合作模式	容量保持率/%	总收益/亿元
$N 1, N 2, N 3$	80	38.42
	60	37.41
	40	36.98
$N 1, N 2, N 3$	80	40.68
	60	39.87
	40	39.02
$N 1, N 3, N 2$	80	41.96
	60	40.53
	40	40.57
$N 2, N 3, N 1$	80	39.83
	60	39.27
	40	38.62
$N 1, N 2, N 3$	80	43.85
	60	42.66
	40	41.59

Tab. 4 Total income changes of new energy stations under different game modes

合作模式	容量保持率/%	总收益/亿元
$N 1, N 2, N 3$	80	38.42
	60	37.41
	40	36.98
$N 1, N 2, N 3$	80	40.68
	60	39.87
	40	39.02
$N 1, N 3, N 2$	80	41.96
	60	40.53
	40	40.57
$N 2, N 3, N 1$	80	39.83
	60	39.27
	40	38.62
$N 1, N 2, N 3$	80	43.85
	60	42.66
	40	41.59

Fig. 8 Revenue before cooperative distribution of new energy station transaction

Fig. 9 Revenue after cooperative distribution of new energy station transaction

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