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Normally, most of the utilities use double star ungrounded neutral capacitor banks. They connect series and parallel capacitor units to form that double star design. They normally use it in 33KV systems of electrical power substations. Before going to the detail protection scheme of double star ungrounded 3-phase capacitor bank, we may recall the connection … Read more
In substations, we always see some reactors connected in series with the capacitor bank. First, a circuit breaker along with an isolator connects the capacitor bank to the system bay. After the capacitor bank, a reactor comes in series with each branch of every phase of the capacitor. Understanding the Inrush Current Now, the question … Read more
Why do we use capacitor banks in the system? Generally, these capacitor banks are connected in 33 kV systems. Normally, in a 33 kV system, we use a double star ungrounded capacitor bank. Before discussing the actual connection configuration of a double star ungrounded capacitor bank, let us recall the benefits of a capacitor bank in a … Read more