Table of Contents
How STATCOM absorbs reactive power?
It is shunt-connected to the grid. The reactive current is provided or absorbed by producing a controlled internal voltage waveform. If the STATCOM voltage amplitude is higher than the system voltage amplitude, capacitive reactive power is provided to the grid.
How does a STATCOM generate reactive power?
AC voltage is controlled with capacitive reactive power, when the converter voltage is greater than the system voltage. If the converter voltage is less than the system voltage, the STATCOM produces inductive reactive power. VSC valve reactive current capability is symmetrical for inductive and capacitive operation.
In which mode the STATCOM generates reactive power for the AC system?
1) Over-excited mode of operation In this mode, the STATCOM generates reactive power for the ac system. In this mode of operation, the output voltage increased above the system voltage. The current flows from STATCOM to the ac system.
What are the function of STATCOM in the improvement of power system performance area?
It can be concluded from the simulation results that the proposed STATCOM can be used to improve the performance of the voltage stability, transient stability, rotor angle deviation, transmission line to power grid under different operating conditions.
What is SSSC in power system?
The static synchronous series compensator (SSSC) is a power quality FACTS device that employs a VSC connected in series to a transmission line through a transformer or multilevel inverters.
How do you inject reactive power?
To inject reactive power you need to phase shift the injected current with respect to the grid voltage. Thus, by controlling the phase and amplitude of the injected current you can control the active and reactive power injected into the grid.
Which function of STATCOM in the improvement of power system performance area is correct Mcq?
What are the functions of STATCOM in the improvement of power system performance area? It provides damping against the oscillation in power system.
What are the functions of STATCOM in the improvement of power system performance area Mcq?
When was the first STATCOM implemented?
STATCOM has played an important role in power Industry since 1980s. Kansai Electric Power Co., Inc. (KEPCO) and Mitsubishi Motors, Inc. developed the first STATCOM in the world, 20 MVar STATCOM using force-commutated Thyristor inverters, and put it into operation in January 1980 [2].
Why STATCOM is used?
The Static Synchronous Compensator (STATCOM) is used in an HVDC system to provide reactive power compensation. It makes use of the Voltage Source Converter (VSC) to synthesize a controllable sinusoidal voltage at the fundamental frequency.
Why is reactive power injected?
injection of reactive power is done in order to improve the voltage profile and to reduce the voltage variation.
How does STATCOM work as a reactive power generator?
As V1 > V2, reactive power will flow from STATCOM to the power system. Thus STATCOM, supplies reactive power and acts as reactive power generator. Again, if the voltage of power system increase due to load throw off, STATCOM will reduce its output voltage V1 and therefore will absorb reactive power to stabilize the voltage to normal value.
What is a statstatcom device?
STATCOM or Static Synchronous Compensator is a shunt device, which uses force-commutated power electronics (i.e. GTO, IGBT) to control power flow and improve transient stability on electrical power networks. It is also a member of the so-called Flexible AC Transmission System (FACTS) devices.
What is the voltage regulation capability of Statcom?
As can be seen, voltage regulation capability of STATCOM is from V1 (in lower side) to V2 in upper side of power system. If the voltage of power system goes below V1 or above V2, STATCOM acts in VAR Control mode.
What is STATCOM or static synchronous compensator?
STATCOM or Static Synchronous Compensator is a power electronic device using force commutated devices like IGBT, GTO etc. to control the reactive power flow through a power network and thereby increasing the stability of power network. STATCOM is a shunt device i.e. it is connected in shunt with the line.