EE_RP_A New Control Strategy of a VSC HVDC System for Power System Enhancement.doc
نویسندگان
چکیده
Voltage Source Converter (VSC) based HVDC is the most recent HVDC technology with extruded DC cables in small and medium power transmission. VSC-HVDC converters include Insulated Gate Bipolar Transistors (IGBT’S) and operated with high frequency Pulse Width Modulation (PWM) in order to get high speed control of both active and reactive power. With VSCHVDC there is an addition degree of freedom. The reactive power can be control separately in each converter by the AC voltage or set manually. The active power flow can be controlled by the DC voltage, the variation of frequency at the AC side or set manually. This means that the active power flow, the reactive power flow, the AC voltage, the DC voltage and the frequency can be controlled when using VSC-HVDC.
منابع مشابه
Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through
The Voltage Source Converter-HVDC (VSC-HVDC) system applied to wind power generation can solve large scale wind farm grid-connection and long distance transmission problems. However, the low voltage ride through (LVRT) of the VSC-HVDC connected wind farm is a key technology issue that must be solved, and it is currently lacking an economic and effective solution. In this paper, a LVRT coordinat...
متن کاملDynamic Harmonic Modeling and Analysis of VSC-HVDC Systems
Harmonics have become an important issue in modern power systems. The widespread penetration of non-linear loads to emerging power systems has turned power quality analysis into an important operation issue under both steady state and transient conditions. This paper employs a Dynamic Harmonic Domain (DHD) based framework for dynamic harmonic analysis of VSC-HVDC systems. These systems are wide...
متن کاملA New Control Method for Smoothing PMSG-based Offshore Wind Farm Output Power
Nowadays, propagation of wind turbines make challenges to supply safe power to the grid. Because of wind speed changes, supervisors are concerned to wind turbines, be able to produce appropriate electric power during the wind speed changes. As a matter of fact, investors are mostly like to invest on offshore wind farms, because of their more stable and continuous wind speed rather than onshore ...
متن کاملDesign and Analysis of Dc Voltage Control of Multi-terminal Vsc- Hvdc Systems
DESIGN AND ANALYSIS OF DC VOLTAGE CONTROL OF MULTI-TERMINAL VSCHVDC SYSTEMS G.PURUSHOTHAM, S. FAHMEEDA PARVEEN, G.VENKATA SURESH BABU PG Student, 2 Assistant Professor, Associate Professor & HOD, Department of Electrical and Electronics Engineering SITS, Kadapa, Andhra Pradesh, India. _________________________________________________________________________ ABSTRACT: This paper discusses a mult...
متن کاملIntegral Plus Resonant Sliding Mode Direct Power Control for VSC-HVDC Systems under Unbalanced Grid Voltage Conditions
An integral plus resonant sliding mode direct power control (IRSMC DPC) strategy for voltage source converter high voltage direct current (VSC-HVDC) systems under unbalanced grid voltage conditions is proposed in this paper. Through detailed instantaneous power flow analysis, a generalized power compensation method, by which the ratio between the amplitude of active and reactive power ripples c...
متن کامل