Journal of Shandong University(Engineering Science) ›› 2019, Vol. 49 ›› Issue (4): 115-122.doi: 10.6040/j.issn.1672-3961.0.2019.029

• Electrical Engineering • Previous Articles     Next Articles

Comprehensive decision-making method for large-scale photovoltaic system integrated to receiving-end power grid

Xiaoming LIU1(),Yini CONG2,3,Wenbo LI3,Yutian LIU3   

  1. 1. Economic & Technology Research Institute, State Grid Shandong Electric Power Company, Jinan 250021, Shandong, China
    2. Yantai Power Supply Company, State Grid Shandong Electric Power Company, Yantai 264000, Shandong, China
    3. Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan 250061, Shandong, China
  • Received:2019-01-21 Online:2019-08-20 Published:2019-08-06
  • Supported by:
    国网山东省电力公司科技资助项目

Abstract:

This paper proposed a comprehensive decision-making method based on fuzzy analytic hierarchy process (FAHP) and technique for order preference by similarity to ideal solution (TOPSIS) for large-scale photovoltaic system integrated to receiving-end power grid. A decision-making evaluation index system was established to quantify the indexes of grid-connection schemes, in which main influence factors considered were security and stability, intermittence of PV, economy, and extendibility. Taking into account the fuzziness of the preferences of decision-makers, the FAHP algorithm was applied to determine the weights of indexes. The TOPSIS algorithm was adopted to make the multi-objective decision between schemes to get the TOPSIS solution as the best grid-connection scheme. The case study on Shandong power grid demonstrated the whole process of the comprehensive decision-making method and indicated that the method could reflect the merits and demerits of different schemes visually, with which we could get the reasonable decision results.

Key words: photovoltaic system, comprehensive decision-making, FAHP, TOPSIS

CLC Number: 

  • TM715

Fig.1

Evaluation system for large-scale PV system integrated to receiving-end power grid"

Fig.2

The topology near the point of interconnection of PV"

Table 1

Calculation resluts of indexes for preliminary screening"

方案序号电压合格率/%过载线路条数N-1通过率/%
110292.68
210000
310000
410000
510000

Table 2

Calculation results of evaluation indexes"

指标方案二方案三方案四方案五
A11/s0.2600.2820.2780.272
A21/%32.3132.9532.8932.01
A22/%38.5138.1138.1038.21
B111316189
B12/pu2.273.844.942.26
B21/%1.250.630.720.67
C11/万元8 91414 57913 1579 861
C21/%1.621.751.731.41
C22/%41.1538.6739.4739.99
D1/GW1.882.062.052.11

Fig.3

Comparison chartcs of standardized indexes"

Table 3

Weights of evaluation indexes"

准则层一级指标二级指标总排序权重
A(0.348)A1(0.6)A11(1)0.208 80
A2(0.4)A21(0.7)0.097 44
A22(0.3)0.041 76
B(0.348)B1(0.6)B11(0.7)0.146 16
B12(0.3)0.062 64
B2(0.4)B21(1)0.139 20
C(0.196)C1(0.6)C11(1)0.117 60
C2(0.4)C21(0.8)0.062 72
C22(0.2)0.015 68
D(0.108)D1(1)0.108 00
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