Spot Market Clearing and Pricing Model of Regional Power Grid Considering Transmission Cost of Inter-Provincial Power Transactions

doi:10.16183/j.cnki.jsjtu.2023.295

Abstract

Abstract:

In the regional power spot market, inter-provincial transmission power costs are typically calculated by multiplying the transmission price of the physical tie-line channel by the transmission power. However, this method fails to effectively account for the inter-provincial power transactions at different transmission prices. To address this issue, this paper first analyzes the impact of inter-provincial power trading on regional power spot clearing. It then proposes an optinization mechanism for inter-provincial power trading network loss handling, transmission cost processing, tie-line channel flow matching, and point-to-network power trading alignment. Based on this, it proposes a regional power grid spot clearing and pricing model, which incorporates inter-provincial power trading transmission costs into a standardized regional power spot clearing model. It derives the mathematical relationship between the system marginal prices of different provincial power grids. The proposed clearing and pricing model aims to achieve optimal allocation of resources, while effectively stimulating market players to bid reasonably. Finally, it validates the correctness and effectiveness of the proposed model through specific numerical examples.

Key words: inter-provincial power trading, transmission costs, regional spot, clearing and pricing model

CLC Number:

TM734

GU Huijie, DONG Cheng, HE Xiqi, HU Rong, ZHANG Honglue, WEN Zhaoxin. Spot Market Clearing and Pricing Model of Regional Power Grid Considering Transmission Cost of Inter-Provincial Power Transactions[J]. Journal of Shanghai Jiao Tong University, 2025, 59(2): 208-220.

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线路	fbus	tbus	r	x	b	rateA	rateB	rateC	ratio	angle	status	angmin	angmax	cost/ [元·(MW·h)^-1]
AC1	223	318	0.013	0.104	0.218	500	600	625	0	0	1	-360	360	20
AC2	206	303	0.013	0.104	0.218	100	600	625	0	0	1	-360	360	20

线路	fbus	tbus	r	x	b	rateA	rateB	rateC	ratio	angle	status	angmin	angmax	lossratio	cost/ [元·(MW·h)^-1]
DC1	113	216	0.0026	0.0139	0.4611	400	300	400	0	0	1	-360	360	2.00×10^-5	10
DC2	220	324	0.0026	0.0139	0.4611	400	300	400	0	0	1	-360	360	2.00×10^-5	30

交易成分	类型	送端主体	受端主体	是否双向	网损率	输电价格/ [元·(MW·h)^-1]	上下限/MW
A省送B省	网对网	A省	B省	否	0.03	10	0~360
#10#11发电机送C省	点对网	A省	C省	否	0.06	50	0~200
B省送C省	网对网	B省	C省	是	0.03	20	+∞

场景	总发电成本		A省成本		B省成本		C省成本		输电费用		总成本
场景	交易输电	物理输电	交易输电	物理输电	交易输电	物理输电	交易输电	物理输电	交易输电	物理输电	交易输电	物理输电
1	8033.16	8032.69	2328.70	2328.34	2669.23	2676.04	3035.17	3028.31	19.40	19.62	8052.50	8052.31
2	8035.27	8034.70	2313.97	2311.84	2677.14	2693.60	3044.17	3029.25	18.75	19.21	8054.02	8053.90
3	8035.63	8034.83	2310.95	2310.56	2683.35	2694.83	3041.32	3029.43	18.79	19.17	8054.46	8054.00

省间电力交易	场景1	场景2	场景3
省间电力交易1	6272.0271	59436273	5876.3823
省间电力交易2	0	0	0
省间电力交易3	6562.0205	6401.2425	6457.0775