Abstract
Now a days there is high demand of power. In the process of supplying the required amount of power, the power system become complex and transient stability has become a major challenging. In order to progress transient stability there are various measures identical as discrete control of excitation systems, ML-VSC (Multi Level Voltage Source Converter) based SMES (Super Conducting Magnetic Energy Storage System) etc., in that ML-VSC based Super Conducting Magnetic Energy Storage System has acknowledged much responsiveness in the power system application. As the inertia is little, if some distraction at load side will disturb frequency of a system and it will create electromechanical oscillations. The SMES controller which is using as a fast acting storage system, it be capable of supervise the electromechanical oscillations immediately and helps in plummeting the frequency deviancies underneath the limits. This paper is apprehensive by way of the control of ML-VSC based SMES for effective assistance of active and reactive power of a power system. Super Conducting Magnetic Energy Storage System is a device comprises of a superconducting coil, wherein ac power is converted into dc by ac-dc power conversion system and it will be stored in superconducting coil as magnetic energy, it can be charged and discharged very rapidly during the ac-dc conversion because of its high storage efficiency and fast response. Here, the ML (Multilevel inverter) provides more than two voltage levels due to this the harmonic contents are reduced and desired output voltage waveform can be obtained. The time domain parameters of the SMES are controlled by PID controller with the help of PID controller technique.
Published Version
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