Research on the optimal strategy of pumped-storage power station to provide multiple time-scale reserves

doi:10.19799/j.cnki.2095-4239.2021.0410

Abstract

Abstract:

In the background of peak carbon emissions and carbon neutrality, renewable energy generation will become the main generation form in future power systems. Simultaneously, randomness and volatility increase the reserve requirement in different time scales. Pumped-storage power station (PSPS), a mature type of energy storage, has the advantages of fast regulation speed and large capacity, and it has increasing importance in the aspect of ancillary services. Trading off the benefits of energy storage in the energy market and the multiple time-scale reserve market to maximize its benefits is an important issue for PSPS waiting to be addressed. In this regard, this paper establishes an optimal decision-making model for PSPS to participate in the energy market and the multiple time-scale reserve market. The impact of reserve compensation prices on the operation strategies is further analyzed. This work provides a solution for PSPS to participate in the electric energy market. Case studies show that the total revenue of PSPS is significantly increased through providing reserve service. The total revenue of PSPS when providing multiple time-scale reserves is higher than that when providing a single reserve service. In the test case, the total revenue of PSPS when providing multiple time-scale reserves is increased by 44.37% at least.

Key words: pumped storage power station, multiple time-scale reserves, energy market, market strategy

CLC Number:

TM 622

Xiaopeng YU, Xiaomeng LI, Zhong ZHANG, Yuanzhao HAO, Chenghao LI, Xingwei CHEN, Wei CUI, Ze GAO. Research on the optimal strategy of pumped-storage power station to provide multiple time-scale reserves[J]. Energy Storage Science and Technology, 2022, 11(2): 573-582.

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备用补偿价格 /(元/h)	申报备用容量		总收益 /元	最大抽水功率 /MW	最大放电功率 /MW	最小库容状态 /(MW·h)	最大库容状态 /(MW·h)
备用补偿价格 /(元/h)	向上备用容量 /MW	向下备用容量 /MW	总收益 /元	最大抽水功率 /MW	最大放电功率 /MW	最小库容状态 /(MW·h)	最大库容状态 /(MW·h)
0.002	0	0	8357	20	20	0.00	100
0.004	0	0	8357	20	20	0.00	100
0.006	0.8	0	8360	19.15	20	0.01	100
0.008	3	0	8479	17	20	0.05	100
0.010	3	0	8623	17	20	0.05	100
0.012	3	3	8835	17	17	0.05	99.95
0.014	3	3	9123	17	17	0.05	99.95
0.016	3	3	9411	17	17	0.05	99.95
0.018	3	3	9699	17	17	0.05	99.95
0.020	3	3	9987	17	17	0.05	99.95

备用补偿价格 /(元/h)	申报备用容量		总收益 /元	最大抽水功率 /MW	最大放电功率 /MW	最小库容状态 /(MW·h)	最大库容状态 /(MW·h)
备用补偿价格 /(元/h)	向上备用容量 /MW	向下备用容量 /MW	总收益 /元	最大抽水功率 /MW	最大放电功率 /MW	最小库容状态 /(MW·h)	最大库容状态 /(MW·h)
0.0016	0	0	8357	20	20	0	100
0.0032	0	0	8357	20	20	0	100
0.0048	0	0	8357	20	20	0	100
0.0064	2.4	0	8376	18	20	0.40	100
0.0080	4.9	0	8510	15	20	0.82	100
0.0096	10	6.8	8873	10	13	1.67	98.87
0.0112	10	8.6	9559	10	11	1.67	98.56
0.0128	10	10	10324	10	10	1.67	98.33
0.0144	10	10	11092	10	10	1.67	98.33
0.0160	10	10	11860	10	10	1.67	98.33

备用补偿价格 /(元/h)	申报备用容量		总收益 /元	最大抽水功率 /MW	最大放电功率 /MW	最小库容状态 /(MW·h)	最大库容状态 /(MW·h)
备用补偿价格 /(元/h)	向上备用容量 /MW	向下备用容量 /MW	总收益 /元	最大抽水功率 /MW	最大放电功率 /MW	最小库容状态 /(MW·h)	最大库容状态 /(MW·h)
0.0012	0	0	8357	20	20	0	100
0.0024	0	0	8357	20	20	0	100
0.0036	0	0	8357	20	20	0	100
0.0048	0	0	8357	20	20	0	100
0.0060	0.9	0	8359	19	20	1.71	100
0.0072	2.4	0	8420	18	20	4.77	100
0.0084	5.3	0	8558	15	20	10.66	100
0.0096	20	20	9216	0	0	40	60
0.0108	20	20	10368	0	0	40	60
0.0120	20	20	11520	0	0	40	60

备用补偿价格 /(元/h)	申报备用容量		总收益 /元	最大抽水功率 /MW	最大放电功率 /MW	最小库容状态 /(MW·h)	最大库容状态 /(MW·h)
备用补偿价格 /(元/h)	向上备用容量 /MW	向下备用容量 /MW	总收益 /元	最大抽水功率 /MW	最大放电功率 /MW	最小库容状态 /(MW·h)	最大库容状态 /(MW·h)
0.001	0	0	8357	20	20	0	100
0.002	0	0	8357	20	20	0	100
0.003	0	0	8357	20	20	0	100
0.004	0	0	8357	20	20	0	100
0.005	0	0	8357	20	20	0	100
0.006	0.9	0	8359	19	20	1.71	100
0.007	2.4	0	8409	18	20	4.77	100
0.008	4.9	0	8508	15	20	9.80	100
0.009	6.8	0	8653	13	20	13.58	100
0.010	20	20	9600	0	0	40	60

参数	备用1	备用2	备用3	备用4	多种备用并用
补偿价格/(元/h)	0.01	0.008	0.006	0.005	/
最大抽水功率/MW	17	15	19	20	10
最大放电功率/MW	20	20	20	20	10
最小库容状态/(MW·h)	0.005	0.82	1.71	0	21.72
最大库容状态/(MW·h)	99.95	100	100	100	78.28
总收益/元	8623	8510	8359	8357	12340