Abstract
A high proportion of photovoltaic (PV) connections to a low-voltage distribution network (LVDN) causes serious voltage problems. In order to ensure voltage stability for renewable energy networks, we propose a distributed reactive voltage control strategy that is event-triggered. The voltage information of the PV nodes is transmitted to the upper layer of the communication network, where the agent calculates the output set value of the PV inverter. The underlying control strategy is based on the voltage sensitivity matrix, and the upper-level control strategy is based on an event-triggered consensus protocol. This strategy can accommodate the requirements for multi-time modeling and control. We verified the convergence of the event-triggered control algorithm using numerical analysis and proved the reduction of the communication times. We conducted case studies and simulation experiments to verify the effectiveness of our proposed voltage control strategies.
Highlights
High fossil fuel consumption has caused many problems, such as energy crises and environmental pollution
When the network includes high penetration distributed generation (DG), OLTC and switching capacitors (SC) are not able to respond to voltage changes in time
To address the problems of continuous communication in multi-agent system (MAS), a high complexity in designing distributed event-triggered control (ETC), and the limitations of system dynamics, we propose a distributed control strategy for photovoltaic (PV) inverters based on the voltage sensitivity matrix
Summary
High fossil fuel consumption has caused many problems, such as energy crises and environmental pollution. Others propose a new distributed event-triggered algorithm to solve the multi-agent consistency problem [25]. To address the problems of continuous communication in MAS, a high complexity in designing distributed ETCs, and the limitations of system dynamics, we propose a distributed control strategy for photovoltaic (PV) inverters based on the voltage sensitivity matrix. We regarded the reactive output of PV inverters as the control object, and we developed a distributed approach of ETC to solve the multi-agent consistency problem. This method has the advantage of increasing the flexibility and stability of network communication over centralized methods [4,8,9,10,12].
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