Abstract
This paper proposes a local control strategy applied in the soft open point (SOP) to suppress voltage fluctuation when adding a renewable energy source into the system. The mathematic model of the grid connected to SOP is established based on the characteristics of a low-voltage distribution network. Combined with the mathematic model and local voltage information, the local control strategy is proposed to optimize the active and reactive power distribution and consume the minimum apparent power of the converter. The local control strategy can effectively suppress the voltage fluctuation caused by renewable energy access, which was testified by MATLAB/Simulink simulation. In addition, the local control strategy can deduce the communication resource and increase the response speed compared to global optimization. This paper is meaningful for renewable energy source distribution and voltage balance in low-voltage distribution systems.
Highlights
In recent years, middle-income and high-income nations have been trying to switch to renewable energy, such as wind power and photovoltaic; the major industries in these nations are lagging behind in switching from non-renewable energy to renewable energy [1]
Soft open point (SOP), one of the active distribution network (ADN) devices, first proposed by the Imperial College London [2], is known as soft normal open point (SNOP), which is defined as several power electronic converters connected to two or more feeders in the distribution network [3]
A local control strategy applied to the multi-terminal SOP was proposed to suppress renewable energy generation fluctuation
Summary
Middle-income and high-income nations have been trying to switch to renewable energy, such as wind power and photovoltaic; the major industries in these nations are lagging behind in switching from non-renewable energy to renewable energy [1]. In [10], the voltage was regulated via the reactive power of a (2) Achieving the goal of saving the computation and communication costs, and the local control distributed generation inverter and SOP. These studies concentrate on local reactive power regulation proposed can respond rapidly to voltage fluctuation compared with the traditional global while the voltage fluctuation is not merely associated with it. Theofoverall contributions of thisnetwork paper are distribution by using the impedance characteristics a low-voltage distribution to summarized as local follows: establish a fast non-communication control strategy, which aims to reduce the impact of new energy access on the voltage of the feeder nodes. Achieving the goal saving the computation and communication costs, and the local control
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