Research on Comprehensive Energy Coordination Planning Considering Flexible Load

doi:10.16628/j.cnki.2095-8188.2020.11.007

Abstract

Abstract:

Aiming at the problem that flexible load (FL) is not considered in the integrated energy planning of the traditional power grid.A method of using FL "virtual energy storage" characteristics to coordinate planning with integrated power grid energy is proposed.First,optimize the load curve by constructing two response models of FL transfer and reduction;secondly,construct a grid expansion planning evaluation index system from multiple perspectives such as grid economy,power quality and supply and demand capabilities,and then realize the calculation of the optimal expansion life of the grid.Finally,through the simulation of the actual distribution network of 10 kV 37 nodes,the results show that the distribution of grid load and FL distribution have a delaying effect on grid planning,and can improve the terminal voltage of the grid and increase the operating economy.

Key words: integrated energy planning, flexible load, response model, extension evaluation index

CLC Number:

TM743

CHEN Changqing, HUANG Jiyuan. Research on Comprehensive Energy Coordination Planning Considering Flexible Load[J]. LOW VOLTAGE APPARATUS, 2020, 0(11): 40-45.

Figures/Tables 8

References 17

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参数	数值
光伏发电单位容量成本/(元·kW^-1)	5 500
光伏发电年运维成本/(元·kWh^-1)	0.3
光伏使用寿命/年	20
储能单位容量成本/(元·kWh^-1)	1 650
储能单位有功功率成本/(元·kW^-1)	1 270
储能单位运维成本/(元·kWh^-1)	0.08
电池替换率/%	5
储能能量转换率	0.9
[SOC_min,SOC_max]	[0.1,0.9]
储能使用寿命/年	15
贴现率	0.65

负荷类型	补偿价格/(元·kW^-1)
负荷类型	≤60 min	240 min
居民	0.482	4.914
商业	8.552	31.317

比较项目	“1+3”“球拍型”					“2+2”“杠铃型”
比较项目	不响应	首端	均匀	末端	扩建	不响应	首端	均匀	末端	扩建
储能投资成本/万元	13.276	13.276	13.276	13.276	38.362	13.276	13.276	13.276	13.276	36.323
光伏投资成本/万元	11.878	11.878	11.878	11.878	13.865	11.878	11.878	11.878	11.878	13.294
运行维护成本/万元	14.623	14.623	14.623	14.623	17.877	14.623	14.623	14.623	14.623	17.117
政府补贴收益/万元	-33.42	-33.421	-33.421	-33.421	-62.757	-33.421	-33.421	-33.421	-33.421	-59.454
用户响应成本/万元	0	1.730	1.730	1.730	1.730	0	1.730	1.730	1.730	1.730
网损成本/万元	872.250	854.720	846.110	732.250	768.810	843.050	869.150	799.830	795.200	714.460
购电成本/万元	58.795	55.462	51.249	44.782	41.010	57.743	53.585	51.594	49.367	45.883
总成本/万元	937.400	918.270	905.450	785.120	818.900	907.150	921.090	857.780	850.930	768.970
最低电压/p.u.	0.948	0.948	0.949	0.970	0.971	0.953	0.955	0.950	0.972	0.971

比较项目	“球拍型”	“杠铃型”
PV安装节点	2/24/35	27
PV容量/kW	1.994/1.863/0.123	2.837
储能安装节点	4/19	9/14
储能功率/kW	9.393/5.317	7.297/7.867
储能容量/kWh	35.173/13.321	21.446/22.667