Harmonics and reactive power regulation and guidelines are upcoming issues and increasingly
being adopted in distributed power system and industries. Vital use of power electronic
appliances has made power management smart, flexible and efficient. But side by side they are
leading to power pollution due to injection of current and voltage harmonics. Harmonic pollution
creates problems in the integrated power systems. The researchers and engineers have started
giving effort to apply harmonic regulations through guidelines of IEEE 519-1992. Very soon
customers have to pay and avail the facility for high performance, high efficiency, energy saving,
reliable, and compact power electronics technology. It is expected that the continuous efforts by
power electronics researchers and engineers will make it possible to absorb the increased cost for
solving the harmonic pollution.
The thyristor controlled reactors of various network configurations are widely used in industries
and utility systems for harmonic mitigation and dynamic power factor correction. These thyristor
controlled reactor operate as a variable reactance in both the inductive and capacitive domains.
By means these two parameters two types of problems are normally encountered. The first
problem is the reactive power (Var) that leads to poor power factor and the harmonics appears
due to presence of power converter devices and nonlinear loads for example, electrics machines,
fluctuating industrial loads, such as electric arc furnaces, rolling mills, power converters etc.
These types of heavy industrial loads are normally concentrated in one plant and served from one
network terminal, and therefore, can be handled best by a local compensator connected to the
same terminal.
A simulink model of power system with all these power defeciencies is constructed and contrl system is applied to check the results as follows:
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