Abstract
An innovative solution to provide a demand response for power system is proposed in this paper by considering the feasibility of two-way direct load control (TWDLC) of central air conditioning chiller system for wide-area in real-time manner. Particularly, the proposed TWDLC scheme is designed to tackle the load shedding ratio optimization problem for all under-controlled customers, aiming to satisfy the target load curtailment defined in each scheduling step. Another notable contribution of this work is the utilization of constraint loosening concept on actual load, curtailed to overcome the uncertainties of load reduction during TWDLC. Given the presence of fuzzy constraints, the proposed load shedding ratio optimization problem can be tackled using fuzzy linear programming. A delicate strategy is then formulated to transform the proposed fuzzy linear programming problem into a regular linear programming problem. A selection scheme used to obtain the feasible candidates set for load shedding at every sampling interval of TWDLC is also designed along with the fuzzy linear programming.
Highlights
The rapid development of smart grid [1,2,3], integrated with advanced metering infrastructure (AMI) and two-way communication capability offers a new opportunity for utility company to revolutionize the existing electrical systems
Energies 2018, 11, 492 intelligent control technologies in facilitating a continuous bidirectional communication between the utility or curtail service provider (CSP) and its customers [7,8], a two-way direct load control (TWDLC) scheme for central air-conditioning chiller systems can further be envisioned as an emergency demand response mechanism with real-time load shedding effect
The main contribution of this paper is to propose an innovative approach based on fuzzy linear programming [28] to tackle the TWDLC
Summary
The rapid development of smart grid [1,2,3], integrated with advanced metering infrastructure (AMI) and two-way communication capability offers a new opportunity for utility company to revolutionize the existing electrical systems. Energies 2018, 11, 492 intelligent control technologies in facilitating a continuous bidirectional communication between the utility or CSP and its customers [7,8], a two-way direct load control (TWDLC) scheme for central air-conditioning chiller systems can further be envisioned as an emergency demand response mechanism with real-time load shedding effect. System is designed to model the uncertainties of load reduction by allowing for a certain degree of constraint loosening to obtain an optimal TWDLC schedule of central chiller systems. With these optimization flexibilities, a soft curtailment for the TWDLC of central air conditioning systems is achieved.
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