基于复功率分布矩阵的电力系统碳流追踪方法

doi:10.3969/j.issn.2097-0706.2023.08.001

摘要/Abstract

摘要：

随着“双碳”目标的提出，电力系统降碳转型迫在眉睫，为掌握电网运行过程中碳流动情况以及电网碳分布情况，提出了一种基于复功率分布矩阵的电力系统碳流追踪方法。首先以电力系统精准潮流结果为基础，构造电力系统复功率分布矩阵，得到有损网络中发电机组所发出的功率在各个节点的分配情况；然后根据不同的发电机组类型与长期运行数据，构建火电机组碳排放模型；最后依据该模型得到的电源侧碳排放数据和碳流与潮流的换算关系，分析负荷、支路和网损三者的碳排放分布情况并基于有功-无功耦合关系对网损的碳排放进行划分，实现电力系统碳流的准确追踪。采用该碳流追踪模型在IEEE 14，IEEE 30节点系统进行测试，测试结果表明，该模型可精准计算电力系统实时的碳排放分布情况，计算各负荷、支路及网损的碳排放，明确各支路无功功率对碳排放的影响，可为用户侧碳排放责任分摊及碳减排措施制定提供指导。

关键词: “双碳”目标, 降碳转型, 复功率分布矩阵, 精准潮流, 碳流追踪, 碳排放

Abstract:

The proposal of the dual carbon target prompts the low carbon transformation of power systems. To obtain the carbon flow and distribution in a power grid， a carbon flow tracking method for power systems based on the complex power distribution matrix is proposed. The matrix is constructed based on precise carbon footprint tracking results. And the power generated by different units at each node in a lossy network is obtained. Then， a carbon emission model for thermal power units is constructed based on types of the units and their long-term operating data. Finally， based on the power supply-side carbon emissions and the conversion relationship between carbon flow and power flow obtained from the model， the carbon emission distributions varying with the loads， branches， and network losses are analyzed. The carbon emissions of network losses are divided according to the coupling relationship between active and reactive power， achieving accurate tracking of the carbon flow in the power system. The proposed model was tested in an IEEE 14 node system and an IEEE 30 node system， whose results verified the effectiveness of the carbon flow tracking model in calculating real-time carbon emissions of the power system， carbon emissions of different loads， branches and network losses. The model stated the influence of reactive power on carbon emissions，which can guide the carbon emission responsibility allocation on user side and the carbon emission reduction strategy making.

Key words: dual carbon target, low carbon transformation, complex power distribution matrix, precise power flow, carbon flow tracking, carbon emissions

中图分类号:

TK019：TM71

闫丽梅, 胡汶硕. 基于复功率分布矩阵的电力系统碳流追踪方法[J]. 综合智慧能源, 2023, 45(8): 1-10.

YAN Limei, HU Wenshuo. Carbon flow tracking method of power systems based on the complex power distribution matrix[J]. Integrated Intelligent Energy, 2023, 45(8): 1-10.

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支路编号	始端节点	末端节点	始端		末端
支路编号	始端节点	末端节点	P/MW	Q/（MV·A）	P/MW	Q/（MV·A）
1	1	2	80.99	-0.90	-79.86	-1.49
2	1	5	44.51	2.83	-43.54	-4.21
3	2	3	33.15	9.08	-32.62	-11.48
4	2	4	36.72	-1.92	-36.00	0.45
5	2	5	28.29	-1.23	-27.87	-1.22
6	3	4	-1.58	-9.81	1.63	8.63
7	4	5	-36.29	4.52	36.46	-3.98
8	4	7	11.79	-9.05	-11.72	9.47
9	4	9	11.07	0.45	-11.00	0.15
10	5	6	27.36	7.81	-26.87	-6.14
11	6	11	8.42	3.85	-8.35	-3.70
12	6	12	7.93	2.52	-7.86	-2.37
13	6	13	18.31	7.38	-18.08	-6.94
14	7	8	-19.92	-13.59	20.00	14.49
15	7	9	31.64	4.12	-31.40	-3.13
16	9	10	4.18	3.97	-4.17	-3.94
17	9	14	8.73	3.46	-8.63	-3.24
18	10	11	-4.83	-1.86	4.85	1.90
19	12	13	1.76	0.77	-1.75	-0.76
20	13	14	6.34	1.90	-6.27	-1.76

节点编号	节点复功率	节点编号	节点复功率
1	125.50+j1.93	8	20.00+j14.49
2	119.86+j18.63	9	42.41+j2.97
3	94.20+j19.00	10	9.00+j580.00
4	72.29-j4.97	11	8.35+j3.70
5	71.42+j5.43	12	7.86+j2.37
6	45.87+j21.25	13	19.84+j7.70
7	31.64+j4.12	14	14.90+j5.00

支路编号	支路	支路编号	支路	支路编号	支路
1	1-2	15	4-12	29	21-22
2	1-3	16	12-13	30	15-23
3	2-4	17	12-14	31	22-24
4	3-4	18	12-15	32	23-24
5	2-5	19	12-16	33	24-25
6	2-6	20	14-15	34	25-26
7	4-6	21	16-17	35	25-27
8	5-7	22	15-18	36	28-27
9	6-7	23	18-19	37	27-29
10	6-8	24	19-20	38	27-30
11	6-9	25	10-20	39	29-30
12	6-10	26	10-17	40	8-28
13	9-11	27	10-21	41	6-28
14	9-10	28	10-22