The Experts below are selected from a list of 1416 Experts worldwide ranked by ideXlab platform

Zhang Guangyuan - One of the best experts on this subject based on the ideXlab platform.

  • New ancillary service market design to improve MW-frequency performance: Reserve adequacy and resource flexibility
    Iowa State University Digital Repository, 2015
    Co-Authors: Zhang Guangyuan
    Abstract:

    With the high penetration of renewable energy resources such as wind and solar, the power system is facing the degradation of frequency response. The major reasons for the degradation of frequency performance can be summarized as following reasons: first, the cheap and clean renewable energy is displacing the conventional thermal generator. While the wind turbine is connecting with the bulk power grid with AC-DC-AC converter and the solar panel is connected to the grid via the DC-AC inverter. The power electronic device isolates the wind or solar unit from the synchronous bulk power grid, therefore, the wind and solar is not designed to response the frequency excursion naturally. Secondly, the wind and solar energy is highly dependent on the weather condition therefore is highly uncertain and variable. This uncertainty and variability increase the difficulties for balancing the generation and demand therefore causes the frequency performance deteriorate than before. In this dissertation, the major contribution is to design the more efficient and effective frequency Responsive Reserve methods to ensure the Reserve adequacy and resource flexibility in handling deteriorating frequency performance. The frequency constrained economic dispatch is first proposed to incorporate the frequency dynamic constraint into economic dispatch problem to ensure sufficient primary and secondary frequency Reserve. Then the model is extended to a stochastic unit commitment model with inertial, primary and secondary frequency constraints and the demand side frequency Responsive Reserve. The method for regulation Reserve requirement is also proposed to meet the satisfactory frequency performance under normal operation condition. The Multiple Linear Regression model is applied to determine the real time regulation requirement for satisfying the target CPS1 metric. For the slower time scale, the high penetration of renewable energy can cause the insufficient flexible ramping capability. In this dissertation, the stochastic look-ahead economic dispatch model with deliverable flexible ramping product is presented to provide the sufficient ramping capability so that the frequency performance is improved and real time price spike is reduced

Guangyuan Zhang - One of the best experts on this subject based on the ideXlab platform.

  • new ancillary service market design to improve mw frequency performance Reserve adequacy and resource flexibility
    2015
    Co-Authors: Guangyuan Zhang
    Abstract:

    With the high penetration of renewable energy resources such as wind and solar, the power system is facing the degradation of frequency response. The major reasons for the degradation of frequency performance can be summarized as following reasons: first, the cheap and clean renewable energy is displacing the conventional thermal generator. While the wind turbine is connecting with the bulk power grid with AC-DC-AC converter and the solar panel is connected to the grid via the DC-AC inverter. The power electronic device isolates the wind or solar unit from the synchronous bulk power grid, therefore, the wind and solar is not designed to response the frequency excursion naturally. Secondly, the wind and solar energy is highly dependent on the weather condition therefore is highly uncertain and variable. This uncertainty and variability increase the difficulties for balancing the generation and demand therefore causes the frequency performance deteriorate than before. In this dissertation, the major contribution is to design the more efficient and effective frequency Responsive Reserve methods to ensure the Reserve adequacy and resource flexibility in handling deteriorating frequency performance. The frequency constrained economic dispatch is first proposed to incorporate the frequency dynamic constraint into economic dispatch problem to ensure sufficient primary and secondary frequency Reserve. Then the model is extended to a stochastic unit commitment model with inertial, primary and secondary frequency constraints and the demand side frequency Responsive Reserve. The method for regulation Reserve requirement is also proposed to meet the satisfactory frequency performance under normal operation condition. The Multiple Linear Regression model is

D Brooks - One of the best experts on this subject based on the ideXlab platform.

  • alternative approaches for incentivizing the frequency Responsive Reserve ancillary service
    The Electricity Journal, 2012
    Co-Authors: Erik Ela, Aidan Tuohy, Michael Milligan, Brendan Kirby, D Brooks
    Abstract:

    Frequency Responsive Reserve is the autonomous response of generators and demand response to deviations of system frequency, usually as a result of the instantaneous outage of a large supplier. This article discusses the issues that can occur without proper incentives and even disincentives, and proposes alternatives to introduce incentives for resources to provide frequency Responsive Reserve to ensure an efficient and reliable power system.

Erik Ela - One of the best experts on this subject based on the ideXlab platform.

  • alternative approaches for incentivizing the frequency Responsive Reserve ancillary service
    The Electricity Journal, 2012
    Co-Authors: Erik Ela, Aidan Tuohy, Michael Milligan, Brendan Kirby, D Brooks
    Abstract:

    Frequency Responsive Reserve is the autonomous response of generators and demand response to deviations of system frequency, usually as a result of the instantaneous outage of a large supplier. This article discusses the issues that can occur without proper incentives and even disincentives, and proposes alternatives to introduce incentives for resources to provide frequency Responsive Reserve to ensure an efficient and reliable power system.

Robert J Thomas - One of the best experts on this subject based on the ideXlab platform.

  • location based scheduling and pricing for energy and Reserves a Responsive Reserve market proposal
    Decision Support Systems, 2005
    Co-Authors: Jie Chen, Timothy D Mount, James S Thorp, Robert J Thomas
    Abstract:

    It is well known that given a network that can become constrained on voltage or real power flows, Reserves must also be spatially located in order to handle all credible contingencies. However, to date, there is no credible science-based method for assigning and pricing Reserves in this way. Presented in this paper is a Responsive-Reserve scheduling algorithm incorporating constraints imposed by grid security considerations, which include one base case (intact system) and a list of credible contingencies (line out, unit lost, and load growth) of the system. By following a cost-minimizing co-optimization procedure, both power and Reserves are allocated spatially for the combined energy and Reserve markets. With the Lagrange multipliers obtained, the scheduling algorithm also reveals the locational shadow prices for the Reserve and energy requirements. Unlike other pricing and scheduling methods in use, which are usually ad hoc and are based on engineering judgment and experience, this proposed formulation is likely to perform better in restructured markets when market power is a potential problem. An illustrative example of a modified IEEE 30-bus system is used to introduce concepts and present results.