Low-Carbon Economic Dispatching of Park Integrated Energy System Applying Carbon Emission Flow Theory

doi:10.12204/j.issn.1000-7229.2022.11.004

Abstract

Abstract:

In the study of low-carbon economy dispatching of park integrated energy system (PIES), it is difficult to accurately estimate the carbon emissions caused by purchasing electricity from outside, which poses a severe challenge to the accuracy of PIES low-carbon economy dispatching. In this paper, the carbon flow density of the external power grid is used to accurately calculate its hidden carbon emissions, and a two-layer optimization model of PIES low-carbon economic dispatching is established. Finally, an example is analyzed in a typical PIES. The results show that, compared to PIES economic scheduling alone, the proposed optimization model can reduce carbon emissions of the PIES by about 21.37% while increasing operating costs by 4.82%. At the same time, the proposed model can optimize the carbon flow distribution of PIES to eliminate the weak link of the system and greatly improve the environmental protection of PIES.

Key words: park integrated energy system, carbon flow, low-carbon economy, two-level optimization model

CLC Number:

TM73

YANG Yi, YI Wenfei, WANG Chenqing, WANG Mingshen, WU Zhijun, MU Yunfei, ZHENG Mingzhong. Low-Carbon Economic Dispatching of Park Integrated Energy System Applying Carbon Emission Flow Theory[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(11): 33-41.

Figures/Tables 14

Fig.1 Typical structure of a PIES

Fig.2 EH model in PIES

Fig.3 Framework of the two-level optimization model

Fig.4 Load curves

Fig.5 Chart of PV output

Fig.6 Curve of time-of-use electricity price

Fig.7 Carbon flow intensity of external input power

Table 1 Optimization results under three scenarios

Fig.8 Curves of energy purchase

Fig.9 Operating power curves of HP and EC

Fig.10 Charge/discharge power curves of BESS, TESS1 and TESS2

Fig.11 Curves of load carbon flow intensity

TableA1 Rated parameters of equipment

TableA2 Other parameters

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