Typical Case Design of Distribution System Considering DG Integration

doi:10.12204/j.issn.1000-7229.2020.10.006

Abstract

Abstract:

At present, there is a lack of unified and standardized typical examples for the scenario that distributed generation is widely connected to the distribution network in the future. Therefore, combined with the actual situation of China’s distribution network, three typical scenarios of rural, urban areas and industrial park are constructed. On this basis, the design principles and methods for typical scenarios are proposed. According to the load type, typical characteristics of distribution network, and the penetration rate of distributed generation, the distribution network examples in typical scenarios are designed, respectively, and the detailed parameters and typical daily data are given. At the same time, the analysis index and method for the example are given, and the detailed analysis and test are carried out from the perspective of over / low voltage test and distributed generation accommodation calculation. The results show the rationality and feasibility of the design example, which can provide a good case basis for the related research of distributed generation access.

Key words: distribution network, DG, PV, wind power generator, typical scenario, standard case

CLC Number:

TM744

SUN Chongbo, LI Jingru, LUO Fengzhang, YUAN Kai, SONG Yi, ZHANG Tianyu. Typical Case Design of Distribution System Considering DG Integration[J]. ELECTRIC POWER CONSTRUCTION, 2020, 41(10): 47-62.

Figures/Tables 34

Table 1 Connected voltage level of DGs

Table 2 Scenarios of distribution system

Fig.1 The 110/35 kV network structure of typical rural scenario

Fig.2 The 10 kV network structure of typical rural scenario

Fig.3 The 110 kV network structure of typical urban scenario

Fig.4 The 10 kV network structure of typical urban scenario

Fig.5 The 10 kV network structure of typical industrial park scenario

Fig.6 Output curve of typical DG supply

Fig.7 Typical daily load curve

Fig.8 Sequential voltage distribution of 10 kV rural scenario

Fig.9 Voltage extremum of 10 kV rural scenario

Table 3 DG consumptive level of typical scenarios

Table A1 Parameters of the 110 kV/35 kV transformers under scenario of rural areas

Table A2 Parameters of the high voltage lines under scenario of rural areas

Table A3 Parameters of the medium voltage lines under scenario of rural areas

Table A4 Parameters of the medium voltage loads under scenario of rural areas

Table A5 Installed capacity of PV stations in 110 kV/35 kV network under scenario of rural areas

Table A6 Installed capacity of power sources in 10 kV network under scenario of rural areaskW

Table A7 Typical output data of power sources under scenario of rural areaspu

Table A8 Typical daily load data under scenario of rural areaspu

Table A9 Parameters of the transformers under scenario of urban areas

Table A10 Parameters of the high voltage lines under scenario of urban areas

Table A11 The 10 kV line parameters under scenario of urban areas

Table A12 The load parameters under scenario of in 10 kV network urban areas

Table A13 The installed capacity of power source in 10 kV network under scenario of urban areas

Table A14 The typical output data of PV source in 10 kV network under scenario of urban areaspu

Table A15 The typical daily load data in 10 kV network under scenario of urban areas

Table A16 Parameters of the 110 kV transformers under scenario of industrial park

Table A17 Parameters of the high voltage lines under scenario of industrial park

Table A18 The 10 kV line parameters under scenario of industrial park

Table A19 The load parameters in 10 kV network under scenario of industrial park

Table A20 The installed capacity of power sources in 10 kV networkunder scenario of industrial parkkW

Table A21 The typical output data of power sources in 10 kV network under scenario of industrial parkpu

Table A22 The typical daily load in 10 kV network under scenario of industrial parkpu

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