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This paper presents the analyzed results of an integrated offshore wind farm (OWF) and seashore wave farm (WAF) connected to an onshore large power grid through a high-voltage direct current (HVDC) link to simultaneously achieve power-fluctuation mitigation and dynamic-stability enhancement. The performance of the studied OWF is simulated by an equivalent aggregated 80-MW doubly-fed induction generator...
This paper presents both steady-state ad transient analyzed results of a hybrid large-scale offshore wind and marine-current farm connected to an onshore power grid via a high-voltage direct current (HVDC) link. The performance of the studied offshore wind farm (OWF) is simulated by an equivalent aggregated 80-MW doubly-fed induction generator (DFIG) while the operating characteristics of the studied...
This paper presents the analyzed results of using a static synchronous compensator (STATCOM) to perform both damping improvement and reactive power-voltage (Q-V) control of a large-scale wind farm (WF). The studied 80-MW WF consisting of forty 2-MW induction generators (IGs) is simulated by an equivalent 80-MW IG connected directly to a utility grid through an equivalent step-up transformer and an...
This paper presents the simulated and measured results of switching transients of the laboratory Microgrid system of the companion paper in Part I that implements a web-based monitoring system using an industrial PLC and campus internet. The studied laboratory Microgrid system consists of two wind induction generators, an AC-to-DC converter, a DC-to-AC inverter, a PV module, a UPS, and a battery module,...
This paper presents the effects of installing variable current-limit reactors (CLRs) and adjusting load tap changers (LTCs) on performance of a commercial wind farm in Taiwan using computer simulations. The companion paper in Part I demonstrates the field measured results, simulation model, and simulation results of the studied Jang-Bin wind farm with twenty-three 2-MW DFIG-type wind turbine generators...
This paper designs a damping controller for a superconducting magnetic energy-storage (SMES) unit to simultaneously achieve stability improvement and suppress tie-line active-power variations of a large-scale wind farm (WF) subject to wind-speed fluctuations. A complete system model based on a synchronously rotating reference frame for the studied WF combined with the SMES unit is properly derived...
With the advance in wind turbine technologies, the cost of wind energy becomes competitive with other fuel-based generation resources. Due to the price hike of the fossil fuel and the concern of the global warming, the development of wind power has rapidly progressed over the last decade. The annual growth rate has exceeded 26% since 1990s. Many countries have set goal for high penetration levels...
This paper proposes a novel scheme using a superconducting magnetic energy-storage (SMES) unit to simultaneously perform both power-flow control and transient stability improvement of a large-scale wind power generation system (WPGS) subject to severe wind fluctuations. A complete system model based on a synchronously rotating reference frame for the studied WPGS combined with the proposed SMES unit...
This paper presents small-signal stability, steady-state characteristics, and dynamic performance of an autonomous hybrid wind-PV-battery system feeding an isolated single-phase load. To improve the inherent variable frequency, variable voltage, and loading effects of the studied wind synchronous generator (SG) under random wind speeds, an AC-to-DC converter and a battery system are employed to combine...
This paper proposes a novel monitoring and control system for achieving real-time monitoring and control of a hybrid wind-PV-battery renewable energy system. The proposed system constitutes a supervisory control and data acquisition (SCADA) system that employs campus network of National Cheng Kung University integrated with a programmable logic controller (PLC) and digital power meters. The proposed...
This paper analyzes both dynamic and steady-state characteristics of a commercial wind power generation system (WPGS) containing four wind-turbine induction generators (WTIGs) connected to a utility grid using Matlab/Simulink. The simulated power-flow results are validated by comparing with the field measured results of the studied WPGS. Various steady-state results of the studied WPGS under different...
This paper presents the measured results and harmonics generated by a commercial wind power generation system (WPGS) consisting of four identical 660 kW wind-turbine induction generators (WTIGs). The studied WPGS is connected to an 11.4 kV bus inside a large petroleum-chemical industrial mill located around the middle coast of Taiwan. The field measured results of total harmonic distortion (THD) in...
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