Abstract
Maintaining demand side supply and regulating frequency in power networks are the prime requirements of the modern power systems. The frequency of the power system deviates from its nominal value if there is mismatch between power generation and the consumption. If the active power demand is higher than the active power production in the network, the frequency decreases and vice versa. The increase or the decrease in the frequency can be compensated by balancing the generation and load demands. This is normally done by allocating reserve units or by using inverter based generators such as Battery Energy Storage Devices (BESDs). The main focus of this paper is to control the frequency of the network by providing/absorbing the required/extra amounts of the power by BESDs. The work is done on a simple network and simulations are carried out by using DIgSILENT power factory software version 15.0. The procedure of modeling BES which should operate as Battery Energy Storage equipped Static Compensator (BES-STATCOM) developed in DIgSILENT power factory is also described in this paper.