Simulation veracity is very important to the plan and operation of a powersystem. Too optimistic a simulation will put the system at risk whereas too pessimistic a simulation will waste investments. Wide area measure...
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For a large-scale power grid, how to obtain load model for the substation without load characteristics recorder is the problem facing measurement-based load modeling. The feasibility that the measurement-based load mo...
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It has been well recognized that the load model has great effects on the powersystem analysis and control. However, it is also widely known that the load modeling is a quite difficult problem due to its special prope...
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Under the general backgrounds of fast development of economy, China' power industry is undergoing a new upsurge of infrastructure construction. With the urgent need of the whole society for reliable power supply, ...
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Demmand Side Management (DSM) is now an important consideration for electric power utilities. DSM in general refers to any activity adopted by an electric utility that ultimately changes the utility's system load ...
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As a series FACTS device based on Voltage Source Converter (VSC), Static Series Synchronous Compensators (SSSC) can optimize power flow and improve powersystem stability by controlling the line impedance rapidly. Acc...
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The comparison between Hilbert space based power theory and three other power theories including traditional power theory , instantaneous power theory put forward by Akagi and Fryze power theory are analyzed in this p...
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The location and sizing of distribution substations integrated with urban spatial information is a optimization problem which primary characteristics are the existence of many suboptimal cost peaks and the solution sp...
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Real time test is a necessary step for the control device of equipment before it is installed in powersystem. In this paper, a closed-loop test platform which is based on Real Time Digital Simulator (RTDS) is establi...
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ISBN:
(纸本)9787506292214
Real time test is a necessary step for the control device of equipment before it is installed in powersystem. In this paper, a closed-loop test platform which is based on Real Time Digital Simulator (RTDS) is established to test the performance of FACTS device controller. In this paper, Static Var Compensator (SVC) which is installed in a power plant is used for damping Sub Synchronous Oscillation (SSO) excited by fixed series compensator installed in the transmission line which is to improve the power transfer capability. The control approach, operation mode and the install location of SVC are studied in this paper and the real controller performance has been verified by the proposed test platform. Beside, this platform can also used for the test of performance of other FACTS devices controller.
Aim at the stability problem of multi-infeed direct current (MIDC) systems, voltage source converter based HVDC (VSC-HVDC) was applied to MIDC systems for improving the voltage characteristic of common AC bus in MIDC ...
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Aim at the stability problem of multi-infeed direct current (MIDC) systems, voltage source converter based HVDC (VSC-HVDC) was applied to MIDC systems for improving the voltage characteristic of common AC bus in MIDC systems. A physical model of a dual-infeed HVDC and VSC-HVDC system was set up, and its mathematical model was developed. The rectangular coordinate form of VSC's power transmission equations was deduced through coordinate conversion. Based on the inverse system method for multivariable nonlinear control, the nonlinear controllers of VSC-HVDC system were designed. Simulation results performed on PSCAD/EMTDC show that the designed nonlinear controllers of VSC-HVDC can improve effectively the dynamic character of VSC-HVDC system, stabilize effectively the voltage of dual-infeed HVDC and VSC-HVDC system when AC side is disturbed, reduce the probability of commutation failure in the inverter of HVDC systems, and increase the operation reliability of HVDC systems.
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