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In this paper, the ability of the Nevada (NV) Energy generation fleet to meet its system balancing requirements under different solar energy penetration scenarios is studied. System balancing requirements include capacity, ramp rate, and ramp duration requirements for load following and regulation. If, during some operating hours, system capability is insufficient to meet these requirements, there...
This paper examines a proposal for the introduction of incentive based demand curtailment in the New Zealand Electricity market (NZEM). Today NZEM participants do not submit demand bids (except in pre-dispatch schedule) to the markets for energy and regulation reserve. Professional literature identifies demand response (DR) in a broad variety of uses. Such uses range across peak load management, transmission...
The California Independent System Operator Corporation (CAISO) is in charge of managing the electricity flow along California's open-market wholesale power grid. The CAISO implemented a nodal LMP Electricity Market based on the full network model and upgraded its infrastructure with new state of the art technology in 2009. The implementation of the new market system utilized the Service Oriented Architecture...
ERCOT has moved from a zonal market to an advanced nodal market since December 2010. In ERCOT, combined cycle trains (CCT) contribute a significant share of its total installed capacity. Therefore, how to accurately and efficiently model the CCT is one of the key factors for a successful EROCT nodal market. In order to facilitate market operations and ensure the system reliability, the ERCOT nodal...
DR (Demand response) has an important role in electricity power market by reducing load quantity instead of increasing generation for balancing demand and supply. DR resources are regarded as an extra tool of balancing supply and demand in emergency condition. Also, DR resources can be used in normal condition or used for the purpose of maintaining the reserve rate. Because of the characteristics...
This paper presents a real-time prognosis technique to estimate the life consumption in power modules in a variable-speed wind turbine generator. This approach is used to evaluate the expected life of power electronic modules for a range of drive control strategies in a doubly fed induction (DFIG) generator which is fitted in a variable speed wind turbine including Maximum Power Tracking (MPT), Constant...
This paper reviews the design and operation of a number of large, regional organized markets in the US, as well as the operation of stand-alone single balancing area bilateral markets, from the viewpoint of integrating large amounts of variable output renewable energy sources. Significant differences between the two types of markets are noted. In addition, a series of shortcomings of the first generation...
Web based online real-time reliability integrated information system is asked rapidly for more efficiency and demand response in recent. As the utilization of renewable resources has been receiving considerable attention in recent years, the information system requirement is increased. Specially, the reliability information system is more important for implementing the smart grid. This paper describes...
The opportunities and challenges of implementing a smart electric supply system are discussed, including how to integrate the local public goods of electric system reliability, and increasingly of environmental compliance, in an efficient way. The full potential of the smart grid cannot be attained, however, without the wide-spread availability of real-time pricing for electricity so that all parties,...
The ISO market design has evolved over time from traditions, economic theory and power system operations heuristics. Early market designs made simplifying assumptions and analyzed a convex market. With these assumptions, the tendency has been to analyze the markets under the neoclassical market paradigm. Complicating features in market design such as reactive power, unit commitment, pricing and switching...
ERCOT is transitioning from a current zonal market to a newly redesigned nodal market. In the new ERCOT nodal wholesale market, a Reliability Unit Commitment (RUC) process is designed and implemented to ensure transmission system reliability and security. The main objective of RUC is to ensure that enough resource capacity, in addition to ancillary service capacity, is committed in the right locations...
Hydro generator excitation system is one of the most maintenance intensive subsystem in hydro power plants. A novel embedded maintenance unit of the excitation system is studied. A knowledge bank, which summarizes both the expert knowledge and the analytical knowledge on the failure modes and their manifestations as well as their effects, is established. An expert system is developed to optimize the...
The ISO New England planning process calls for providing reliability, economic, and environmental information to participants. This includes summaries of loss of load expectation studies, transmission adequacy evaluations, environmental issues and performance, and locational marginal pricing, production cost, and congestion information. Short term certainty of resources is provided by the forward...
The paper describes the demand response programs developed and in operation in New England, and the revised designs for participation in the forward capacity market. This description will include how energy efficiency, demand-side resources, and distributed generation are eligible to participate in this new forward capacity market. The paper will also discuss various methods that can be used to configure...
Security constrained optimal power flow programs are important tools for ensuring correct dispatch of supply while respecting the many constraints imposed by the delivery system. In addition to getting the dispatch right, locational prices must be calculated with equal precision in order to infuse market participants with the proper incentives for operation and investment. In this paper we discuss...
Shipboard electric power systems (SPS) are dynamic, complex systems that require continuous monitoring and fast controls to operate in a reliable and secure state. To enhance survivability of naval ships and meet reduced manning requirements, automatic reconfiguration for service restoration may be performed to restore the de-energized loads. This paper presents an automatic rule-based expert system...
Hydro generator excitation system is one of the most maintenance intensive subsystem in hydro power plants. A real time embedded maintenance system of the excitation system is studied. A knowledge bank, which summarizes both the expert knowledge and the analytical knowledge on the failure modes and their manifestations as well as their effects, is established. An expert system is developed to optimize...
In this paper we discuss performance results of a novel real-time closed-loop power amplifier (PA) linearization technique that has originally been proposed by Ahmed and Li. The novel approach performs on-the-fly prediction and measurement of the PA AM/AM and AM/PM non-linearity, stores such non-linear characteristics and calculates their inverse functions in order to pre-distort the base-band amplitude...
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