Delay compensation of demand response and adaptive disturbance rejection applied to power system frequency control

Hosseini, S. A ; Sharif University of Technology | 2020

801 Viewed
  1. Type of Document: Article
  2. DOI: 10.1109/TPWRS.2019.2957125
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2020
  4. Abstract:
  5. In this paper, a modified frequency control model is proposed, where the demand response (DR) control loop is added to the traditional load frequency control (LFC) model to improve the frequency regulation of the power system. One of the main obstacles for using DR in the frequency regulation is communication delay which exists in transferring data from control center to appliances. To overcome this issue, an adaptive delay compensator (ADC) is used in order to compensate the communication delay in the control loop. In this regard, a weighted combination of several vertex compensators, whose weights are updated according to the measured delay, is employed. Generating the phase lead is the most important strategy for these compensators to eliminate the impact of communication delay. Moreover, to overcome the impact of disturbances and uncertainties in power system, an active disturbance rejection control (ADRC) is utilized as the load frequency controller. Being used instead of a PI controller, this robust controller employs an extended state observer to estimate the disturbances and uncertainties and uses a feedback controller to compensate them. The confined iterative rational Krylov algorithm (CIRKA) is employed to reduce the order of the detailed IEEE 39-bus test system model meticulously and facilitate the controller process design. Therefore, a DR control loop, ADC, and ADRC are employed in the LFC to regulate the frequency of the power system in a more efficient way. The simulation results confirm the effectiveness and robustness of the frequency control in presence of communication delay and model uncertainties. © 1969-2012 IEEE
  6. Keywords:
  7. Active disturbance rejection control (ADRC) ; Adaptive delay compensator (ADC) ; Automatic generation control (AGC) ; Confined iterative rational Krylov algorithm (CIRKA) ; Demand response (DR) ; Load frequency control (LFC) ; Adaptive control systems ; Closed loop control systems ; Controllers ; Disturbance rejection ; Electric control equipment ; Electric load management ; Electric power system control ; Iterative methods ; Nonlinear control systems ; Uncertainty analysis ; Active disturbance rejection controls ; Adaptive disturbance rejection ; Communication delays ; Extended state observer ; Frequency regulations ; Load frequency controllers ; Load-frequency control ; Power system frequencies ; Electric frequency control
  8. Source: IEEE Transactions on Power Systems ; Volume 35, Issue 3 , 2020 , Pages 2037-2046
  9. URL: https://ieeexplore.ieee.org/document/8918440/authors#authors