多能互补综合能源系统混合能流计算方法及算例

doi:10.3969/j.issn.2097-0706.2022.07.007

摘要/Abstract

摘要：

以可再生能源为主的综合能源系统利用多能源之间的耦合机制实现多能互补,促进可再生能源消纳,提升系统的能源利用效率,助力实现碳达峰、碳中和目标。建立了电-气-热耦合综合能源系统的混合能流计算模型,采用牛顿-拉夫逊迭代算法进行混合能流计算。为验证混合能流算法的有效性,构建了724节点电-气-热耦合综合能源系统混合能流仿真算例,其中275节点电力网络接入了14处分布式电源,228节点热力网络包含了99节点供蒸汽热力网络及129节点供生活热水网络。仿真结果表明,该算法既可以实现时间断面的混合能流仿真,同时具备连续时间混合能流仿真能力,可用于综合能源系统运行状态以及多能源网络供能品质等场景的评估。

关键词: 碳中和, 综合能源系统, 可再生能源, 分布式电源, 混合能流算法, 牛顿-拉夫逊迭代算法, 多能互补, 电-气-热耦合

Abstract:

A renewable energy-oriented integrated energy system can realize multi-energy complementarity through different coupling mechanism. The system incentives the consumption of renewable energy, improve the energy utilization efficiency and contributes to the realization of carbon peaking and carbon neutrality. The model of electricity-heat-gas coupling system is established, and the calculation method for the multi-energy flow of the system is proposed. The multi-energy flow is calculated by Newton-Raphson iterative algorithm.To verify the effectiveness of the multi-energy flow calculation method,simulation calculation was made on the multi-energy flow of a 724-node electricity-heat-gas coupling system,in which the 275-node power grid was connected to 14 distributed power sources and the 228-node thermal network included a 99-node steam network and a 129-node hot water network. The results show that the calculation method can simulate the multi-energy flow of a single time section and of a continuous time period. Thus,multi-energy flow calculation method can be used to evaluate the operation state of an integrated energy systems and the energy supply quality of a multi-energy network.

Key words: carbon neutrality, integrated energy system, renewable energy, distributed power source, multi-energy flow calculation method, Newton-Raphson iterative algorithm, multi-energy complementation, electricity-gas-heat coupling

中图分类号:

TK019

郭祚刚, 袁智勇, 徐敏, 雷金勇, 李朋岳, 谈赢杰. 多能互补综合能源系统混合能流计算方法及算例[J]. 综合智慧能源, 2022, 44(7): 58-65.

GUO Zuogang, YUAN Zhiyong, XU Min, LEI Jinyong, LI Pengyue, TAN Yingjie. Multi-energy flow calculation method for multi-energy complementary integrated energy systems[J]. Integrated Intelligent Energy, 2022, 44(7): 58-65.

图/表 14

图1

图2

图3

图4

图5

图6

图7

图8

表1

电力网络潮流仿真结果

节点	有功功率/kW	无功功率/ (kV·A)	电压标幺值	相角/rad	节点	有功功率/kW	无功功率/ (kV·A)	电压标幺值	相角/rad
1	452.699 10	12 955.200 00	1.050 000	0	31	-0.089 91	-0.022 48	1.021 811	1.507 875
2	-0.291 79	-0.072 95	1.046 712	0.172 388	32	-1.136 61	-0.284 15	1.021 720	1.513 188
3	-0.373 21	-0.093 30	1.045 058	0.257 537	33	-0.497 05	-0.124 26	1.021 695	1.514 691
4	-0.089 91	-0.022 48	1.043 429	0.341 869	34	-0.442 77	-0.110 69	1.021 561	1.522 794
5	-0.352 86	-0.088 21	1.042 747	0.377 323	35	-0.931 34	-0.232 83	1.021 427	1.530 912
6	-0.089 91	-0.022 48	1.041 448	0.445 050	36	0.600 00	0	1.021 310	1.538 196
7	-1.034 82	-0.258 71	1.040 998	0.468 576	37	-0.089 91	-0.022 48	1.021 277	1.540 196
8	-0.089 91	-0.022 48	1.040 831	0.477 322	38	-0.690 45	-0.172 61	1.021 168	1.546 877
9	-0.391 88	-0.097 97	1.039 461	0.549 423	39	-0.037 32	-0.009 33	1.021 081	1.552 284
10	-0.407 14	-0.101 79	1.038 504	0.599 982	40	-0.722 68	-0.180 67	1.020 926	1.561 882
11	-0.310 45	-0.077 61	1.037 581	0.648 851	41	-0.089 91	-0.022 48	1.020 820	1.568 520
12	-0.249 38	-0.062 34	1.035 947	0.735 828	42	-0.050 89	-0.012 72	1.020 694	1.576 614
13	-0.120 45	-0.030 11	1.034 809	0.796 613	43	-0.044 11	-0.011 03	1.020 618	1.581 481
14	-0.089 91	-0.022 48	1.033 659	0.858 238	44	-0.089 91	-0.022 48	1.020 545	1.586 150
15	-0.603 93	-0.150 98	1.032 107	0.941 811	45	0.250 00	0	1.020 416	1.594 489
16	-0.271 43	-0.067 86	1.030 647	1.020 777	46	-0.485 18	-0.121 29	1.020 394	1.595 909
17	-0.349 46	-0.087 37	1.029 571	1.079 217	47	-0.089 91	-0.022 48	1.020 365	1.597 799
18	-0.089 91	-0.022 48	1.029 153	1.102 010	48	-0.229 02	-0.057 25	1.020 331	1.600 068
19	-0.089 91	-0.022 48	1.028 640	1.130 007	49	-1.201 07	-0.300 27	1.020 265	1.604 387
20	-0.089 91	-0.022 48	1.027 053	1.216 978	50	14.844 59	-0.115 78	1.020 138	1.612 903
21	-0.145 89	-0.036 47	1.026 892	1.225 812	51	0.850 00	-129.920 00	1.020 000	1.620 312
22	-0.671 79	-0.167 95	1.025 966	1.276 797	52	-0.583 57	-0.145 89	1.019 999	1.620 270
23	-0.089 91	-0.022 48	1.025 575	1.298 416	53	-0.089 91	-0.022 48	1.019 994	1.620 133
24	-0.227 32	-0.056 83	1.023 844	1.394 489	54	-1.324 91	-0.331 23	1.019 989	1.619 960
25	-0.128 93	-0.032 23	1.022 555	1.466 372	55	-0.089 91	-0.022 48	1.019 986	1.619 867
26	-0.061 07	-0.015 27	1.022 074	1.492 987	56	-0.089 91	-0.022 48	1.019 982	1.619 731
27	-0.821 07	-0.205 27	1.021 988	1.497 775	57	-0.254 46	-0.063 62	1.019 978	1.619 602
28	-0.089 91	-0.022 48	1.021 968	1.498 917	58	-0.427 50	-0.106 88	1.019 976	1.619 541
29	-0.342 68	-0.085 67	1.021 850	1.505 628	59	-1.112 86	-0.278 21	1.019 974	1.619 465
30	-0.827 86	-0.206 96	1.021 833	1.506 619	60	-2.054 38	-0.513 59	1.019 973	1.619 457

表1

表2

表3

图9

图10

图11

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节点	供热温度	回热温度	节点	供热温度	回热温度
1	200.00	117.06	100	70.00	29.72
2	199.90	117.08	101	69.99	29.71
3	199.82	117.10	102	69.99	29.71
4	199.79	117.21	103	69.98	29.70
5	199.71	117.24	104	69.98	29.70
6	199.50	117.32	105	69.95	29.70
7	199.44	117.28	106	69.94	29.70
8	199.21	117.40	107	69.94	29.70
9	198.96	117.47	108	69.93	29.71
10	198.87	117.47	109	69.92	29.71
11	198.74	117.49	110	69.91	29.71
12	198.64	117.49	111	69.90	29.70
13	198.42	117.49	112	69.89	29.70
14	197.97	117.30	113	69.88	29.70
15	197.46	117.15	114	69.88	29.69
16	196.74	117.47	115	69.86	29.64
17	195.96	117.62	116	69.79	29.65
18	195.69	117.60	117	69.71	29.66
19	194.46	118.10	118	69.64	29.67
20	192.79	118.07	119	69.55	29.62

节点	压力	节点	压力	节点	压力
1	500.0	21	484.1	41	480.7
2	498.4	22	483.6	42	480.6
3	498.1	23	483.2	43	480.6
4	497.9	24	483.0	44	480.5
5	496.1	25	482.9	45	480.5
6	494.3	26	482.4	46	480.5
7	493.3	27	482.3	47	480.5
8	493.1	28	482.1	48	480.5
9	491.5	29	481.8	49	480.4
10	490.8	30	481.8	50	480.4
11	490.3	31	481.8	51	480.3
12	489.0	32	481.6	52	498.4
13	488.9	33	481.5	53	498.4
14	488.8	34	481.2	54	498.4
15	488.0	35	481.1	55	498.4
16	487.3	36	480.9	56	498.4
17	486.7	37	480.9	57	497.9
18	485.9	38	480.9	58	497.9
19	485.2	39	480.9	59	497.9
20	484.4	40	480.8	60	497.9