How to Reduce Ferranti Effect?
Ferranti effect makes voltage instability in the electrical system that cause a dangerous hazardous for equipment and personnel at the load side. There are specific measures taken to limit the Ferranti effects.
Shunt Reactor
The Ferranti effect arises when reactive power accumulates in the power system without loads to absorb it. We must install something that can absorb this excessive reactive power in the transmission line. This reactive power can be absorbed by installing a shunt reactor in the transmission line. Usually, it is installed in at the load end.
A medium transmission line requires the shunt reactor to be placed at the receiving end. However long transmission lines require it to be installed at a periodic distance or in the line. While underground cables have very high capacitance and require short distance of around 10 miles or 15 km intervals.
Load Management
Ferranti effect happens when there is no or light load associated with the lines. To reduce the Ferranti effect, it should satisfy the given condition.
Load current > Charging current.
A transmission line’s loads should be continuously monitored, and the load must be maintained above the limit. It tends to be finished by setting different light load lines onto a single line.
Ferranti Effect
As we know electricity is generated at power generation plants using huge electromechanical generators by conversion from different types of energy. After that, a long-distance transmission line carries this electrical energy to the end users. In order to maximize the effectiveness of the power transmission and distribution system and ensure the safety of the connected loads and personnel, the electrical power transmission lines require a variety of safety devices and components. The transmission line faces different types of losses and characteristics that influence its efficiency. The Ferranti Effect is one such phenomenon that has a significant impact on the transmission line.
For the most part, we assume that the voltage generally drops in the transmission lines because of the line losses. In a long-distance transmission line with a very low load or no load at all, the Ferranti Effect causes the receiving voltage to be higher than the sending voltage.
In this article, we will be going through the Ferranti effect, First, we will start with the basics of the Ferranti Effect, Then we will go through the Causes of the Ferranti Effect, After that we will go through the Ferranti Effect in Transmission Lines and ways to reduce Ferranti effect, At last, we will conclude our Article with Advantages, Disadvantages, and characteristics of Ferranti effect.
Table of Content
- Ferranti Effect
- Terminologies
- Causes
- Ferranti Effect in Transmission Line
- Ferranti Effect in PI model
- How to Reduce Ferranti Effect?
- Characteristics
- Advantages
- Disadvantages