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This paper investigates the impacts of circuit breaker performance on voltage instability corrective actions for power systems with distributed generations (DGs) under contingencies, and proposes a new computer network-aided strategy for stability improvement. This strategy aims to save a distribution system from imminent voltage collapse due to contingencies occurring in subtransmission system, distribution...
Recently increasing connections of various kinds and sizes of distributed generators (DGs) on the distribution feeders have imposed considerable impacts on the existing feeder protective devices that were designed for traditional distribution systems of mostly radial configuration. The DG connections have laid tremendous challenges on reliability of existing feeder protections, for both operational...
Recently electricity generation from wind power has been increasingly popular worldwide. This paper proposes an adaptive protection and control strategy for interfacing the wind-powered distributed generators into the utility power distribution grids. The requirements for the interfacing are defined according to the IEEE-1547 standards. This paper presents the adaptive interfacing controls and protections...
Distributed generations (DGs) powered by renewable energy resources have become increasingly popular and starts to show benefits, but their connection to distribution systems brings operation challenges that must be carefully monitored and controlled. This paper proposes a new network-enabled, real-time monitoring strategy for tracking the operating states of the distribution system, with a focus...
Harmonic disturbances caused by power electronic converters for wind-power distributed generation (DG) that may have serious impacts on the power quality of its connecting power distribution systems must be well controlled according to IEEE 1547 Standards. This paper presents a novel adaptive harmonic detection active (AHDA) filter, consisting of an industry-type power electronic inverter controlled...
Recently increased use of network-enabled devices in power systems, rapid development of distributed generations from renewable energy resources, and government-imposed open access competition have resulted utilities in greater reliance on computer networks for proper power grid operations. This paper proposes a new two-level architecture for power-grid computer networks and to strength the networks'...
This paper proposes a new strategy for computer network-assisted corrective actions against short-term and long-term voltage instabilities in the electricity power distribution system connected with renewable-energy distributed generations. The proposed strategy aims to save the distribution system from imminent voltage collapse due to contingencies occurring in the subtransmission network, distribution...
Dispersed generations (DGs) from renewable energy resources are becoming popular and start to show benefits, but their connection to distribution systems brings operation challenges and supply uncertainty that must be carefully monitored and forecasted to provide data for correct controls of the systems. This paper proposes a distributed monitoring and centralized forecasting strategy for distribution...
This paper proposes a new computer network-integrated stability enhancement strategy for electricity power system connected with renewable-energy distributed generations. The proposed strategy aims to save a distribution system from imminent voltage collapse due to contingencies occurring in the subtransmission network, distribution network, or distributed generation circuit, by executing appropriate...
Connection of distributed generations (DGs) on the distribution systems starts to show benefits but may cause serious stability concerns. This paper presents an efficient adaptive stability control, based on step-ahead model prediction methodology, for distribution systems connected with DGs. This control named Model Prediction Adaptive Control (MPAC) is built upon optimization of selected performance...
Wind-power distributed generation (DG) converters may inject considerable amount of harmonics into their connected distribution systems that could exceed its connected utility tolerance or IEEE 1547 Std. limits. This paper presents a new adaptive harmonics detection active (AHDA) filter that is designed to suppress harmonics produced by wind DG converters. The AHDA filter consists of an inverter of...
This paper presents a network-integrated adaptive protection and control of electricity distribution systems connected with dispersed or distributed generations (DGs). A focus of this paper is to demonstrate the effective use of state-of-the-art digital signal processing (DSP) technology for real-time determination of correct protection and control operations, and to illustrate significance of modern...
Recently electricity generation from wind power has been increasingly popular worldwide as one of the most promising renewable energy sources. This paper proposes an adaptive control strategy for interfacing distributed generations (DGs) from wind power to utility distribution grids. This paper presents the voltage control requirements and protection requirements for wind-powered DGs according to...
Distributed generations (DGs) have been increasingly connected on the distribution feeders that impose challenges on traditional feeder protections. This paper proposes a new adaptive strategy for protection of distribution-system feeders connected with DGs using state-of-the-art digital signal processing (DSP) technology. The proposed strategy overcomes DGs-imposed technical challenges on feeder...
Dispersed generations (DGs) from renewable energy resources are becoming popular and start to show benefits, but their connection to distribution systems brings operation challenges and supply uncertainty that must be carefully monitored and forecasted to provide data for correct controls of the systems. This paper proposes a distributed monitoring and centralized forecasting strategy for distribution...
Cyber-security for computer networks has become a fairly serious concern for electricity utilities due to recent deregulations and distributed generations (DGs) launched in the power system. This paper proposes a new computer network security strategy for coordinated distribution system operations with open access electricity generations. A novel utility computer network security management and authentication...
Distributed generations (DGs) powered by renewable energy resources have become increasingly popular and show benefits, but their connection to distribution systems brings operation challenges that must be carefully monitored. This paper proposes a new network-enabled, real-time monitoring strategy for tracking the operating states of the distribution system connected with DGs. The design of a new...
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