Abstract
The carbon emissions trading market and direct power purchases by large consumers are two promising directions of power system development. To trace the carbon emission flow in the power grid, the theory of carbon emission flow is improved by allocating power loss to the load side. Based on the improved carbon emission flow theory, an optimal dispatch model is proposed to optimize the cost of both large consumers and the power grid, which will benefit from the carbon emissions trading market. Moreover, to better simulate reality, the direct purchase of power by large consumers is also considered in this paper. The OPF (optimal power flow) method is applied to solve the problem. To evaluate our proposed optimal dispatch strategy, an IEEE 30-bus system is used to test the performance. The effects of the price of carbon emissions and the price of electricity from normal generators and low-carbon generators with regards to the optimal dispatch are analyzed. The simulation results indicate that the proposed strategy can significantly reduce both the operation cost of the power grid and the power utilization cost of large consumers.
Highlights
In the face of climate change and energy crisis, low-carbon development was the best approach to ensure sustainable social development [1,2,3,4,5,6,7]
We find that RU−L can help the load trace the carbon emission flow caused by each generator, and the gross carbon emission rate can be obtained from RU−L
With the demand for energy dramatically increasing in the 21st century, carbon emission reductions and low-carbon emission development are indispensable because of the global climate change caused by the release of carbon into the atmosphere
Summary
In the face of climate change and energy crisis, low-carbon development was the best approach to ensure sustainable social development [1,2,3,4,5,6,7]. Literature [29] proposed an economic dispatch of generators based on Carbon Dioxide trading scheme, but the direct power consumer was not considered. Based on a carbon trading market, how to minimize the economic cost and the carbon emission cost of direct power purchased by large consumers must be studied in the power system dispatch. To address this issue, the carbon emission flow in the power grid must first be analyzed.
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