Optimal Dispatching for Regional Integrated Electric and Heating Systems Considering Aggregation and Transaction of Generation-Grid-Load-Storage

doi:10.12204/j.issn.1000-7229.2021.10.004

Abstract

Abstract:

The coordinated utilization of the resources of generation-grid-load-storage is an important means to promote the efficient operation of the regional integrated electric and heating system (RIEHS). This paper proposes an optimal dispatching method for RIEHS considering aggregation and transaction of generation-grid-load-storage. Firstly, the RIEHS dispatching framework is constructed, and the RIEHS dispatching organization process considering aggregation and transaction of generation-grid-load-storage is designed. Secondly, a two-stage optimization dispatching model of RIEHS is established. The first stage is the optimization of the aggregation and transaction of the resources of generation-grid-load-storage by the virtual power plant. The second stage is RIEHS dispatching optimization based on the transaction results of the resources of generation-grid-load-storage. Finally, based on the improved IEEE 33-node power distribution system and the 32-node Bali heating system, a RIEHS with three virtual power plants is constructed for simulation and analysis. The results show that the method proposed in the paper taps the response potential of user-side resources through transaction means, improves the operating income of virtual power plants and the economy of system operation. The effectiveness of the dispatching method has been verified.

Key words: regional integrated electric and heating system (RIEHS), generation-grid-load-storage, aggregation and transaction, virtual power plant (VPP), optimal dispatching

CLC Number:

TM73

YANG Dongmei, WANG Jun, DU Wei. Optimal Dispatching for Regional Integrated Electric and Heating Systems Considering Aggregation and Transaction of Generation-Grid-Load-Storage[J]. ELECTRIC POWER CONSTRUCTION, 2021, 42(10): 28-39.

Figures/Tables 17

Fig.1 RIEHS dispatching framework considering aggregation and transaction of generation-grid-load-storage

Fig.2 RIEHS dispatching organization process considering aggregation and transaction of generation-grid-load-storage

Fig.3 Solution process

Fig.4 RIEHS test case

Table 1 Parameters of the resource of generation-grid-load-storage

Fig.5 Normalized value of multi-energy load and output of WT and PV

Fig.6 Electricity and natural gas prices on the main network

Table 2 Different aggregation scenarios of the resource of generation-grid-load-storage

Table 3

Fig.7 Retail price of each VPP

Fig.8 Electricity transaction results

Fig.9 Heat transaction results

Fig.10 Purchase results of electricity and natural gas

Fig.11 Operation of VPP1

Fig.12 Operation of VPP2

Fig.13 Operation of VPP3

Fig.14 Operation of ES

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