Gas Turbine Generator Protection

An upstream rotating gas compressor.

Gas turbine generator protection.

4 cylindrical rotor seen in recips gts and sts salient pole rotor seen in hydros more poles to obtain nominal frequency at low rpm. Gas turbine control philosophy single control failure alarms when running or during startup protection backs up control thus independent two independent means of shutdown will be available double failure may cause shutdown but will always result in safe shutdown generator drive turbines will tolerate full load rejection. With a torque limiting coupling is in many cases not possible because of the overspeeding of the turbine after the release of. To elaborate on this information and demonstrate how truly difficult it is to detect.

A gas turbine also called a combustion turbine is a type of continuous and internal combustion engine the main elements common to all gas turbine engines are. Steam turbines sts 1 2 4 3 generator protection 5 applying field static exciter dc is induced in the rotor ac is induced in the stator 6. Learn more sel 700g generator protection relay. A fourth component is often used to increase efficiency on turboprops and turbofans to convert power into mechanical or.

Compressorair compressor used in a gas turbine power plant is mainly of the rotary type. Such machines may be employed for variable speed motoring in pumped storage generation schemes or for starting a large gas turbine prime mover. These are the main factors which make protection necessary for the generator or alternator even when properly used a machine in its perfect running condition does not only maintain its specified rated performance for many. Motoring does not necessarily harm your generator but it will cause the prime mover to overheat.

Hydraulic turbine 0 2 to 2. The main components of a gas turbine power plant are the compressor regenerator combustion chamber gas turbine alternator and starting motor. This form of protection can provide earth fault protection when the generator is at standstill prior to run up. A mechanical protection i e.

Generator gear box gas turbine 1. A generator is subjected to electrical stresses imposed on the insulation of the machine mechanical forces acting on the various parts of the machine and temperature rise. Gas turbines gts cgts 4. A downstream turbine on the same shaft as the compressor.

The air filter is attached at the inlet of the compressor where air gets. Summary gasturbine generator sets in particu lar with aeroderivative gas turbines are sensitive to electrical fault events that can damage the gasturbine. Gas turbine 50. The sel 400g offers primary and backup protection for generators of all sizes and types including hydro pumped storage hydro steam turbine and combustion gas turbine generators.

Protection against generator motoring is designed to protect the prime mover as opposed to the generator.