The term "ICOG" in "HT panel" refers to Incoming-Outgoing, describing a type of High Tension electrical panel designed for managing both the incoming power supply and outgoing feeder lines

 During training discussion with Shri SK Vali  sir.

The term "ICOG" in "HT panel" refers to Incoming-Outgoing, describing a type of High Tension electrical panel designed for managing both the incoming power supply and outgoing feeder lines. This type of panel is a crucial component in electrical infrastructure, including solar power plants, and is often manufactured by companies like Trisquare Switchgears. 

ICOG HT Panel in a Solar Plant

In a solar power plant, the ICOG HT (High Tension) panel serves as the central control and distribution point for high-voltage electricity. 

Location: The ICOG HT panel is typically located between the inverter duty transformer (IDT) and the main grid connection point or other power transformers.

Function:

It receives the high-voltage (e.g., 11kV or 33kV) power generated by the solar inverters (after being stepped up by the transformer).

It manages the incoming supply and the outgoing feeders that distribute power from the plant.

It provides essential protection against electrical hazards like short circuits, overloads, and earth faults using integrated components such as Vacuum Circuit Breakers (VCB) and protection relays.

It includes metering and monitoring equipment to measure electrical parameters (voltage, current, frequency, active/reactive power) and often integrates with SCADA/PLC systems for local and remote operation. 

The Principle (Solar)

The overall principle of electricity generation in a solar plant involves several stages:

Photovoltaic Effect: Solar panels convert sunlight (photons) directly into DC (Direct Current) electricity using semiconductor materials (silicon).

Inversion: The DC power is converted to AC (Alternating Current) power by a solar inverter.

Voltage Step-up: The AC power is passed through an Inverter Duty Transformer (IDT) to increase the voltage to a high-tension level (e.g., 11kV, 33kV) suitable for transmission.

Distribution and Protection: The ICOG HT panel then manages the flow of this high-voltage power, protecting the system components and facilitating the export of electricity to the grid or local loads. 

"Tri square"

"Tri square" appears to refer to Trisquare Switchgears Private Limited, a company that manufactures ICOG VCB (Vacuum Circuit Breaker) panels and other high-voltage switchboard equipment used in applications like solar power plants.