Answer / jerry smith

Gas and Steam Turbine Basic protection include:
Overspeed, high vibration, Low lube oil pressure, and high
lube oil temperature.
Specific to gas turbine would be high exhaust temp, excess
spread of temperatures in the exhaust, inlet suction low
pressure, combustion pulsations, compressor bleed valve not
closed, underspeed too close to surge point, fuel valve not
in proper relation to turbine load, and flame detector
failure.
Specific to steam turbines would be inlet steam temperature
high or low, inlet steam pressure low, exhaust steam
pressure high, exhaust steam temperature high, drum level
high on the supply boiler.
Generator faults do not always trip the associated Turbine.

Answer / kaizad

Turbine protection in steam turbines are mainly overspeed, low steam pressure, low vacuum, low vacuum backup, exhaust hood high temperature, loss of generator seal oil, stator water temperature hi, gas concentration very high in stator water,manual trip & electrical trips associated with generator, main transformer, unit service transformer

We have Demin Closed cooling water system with expansion tank for cooling oil system. Expansion tank having N2 bladder. Whenever N2 bladder bursts out, Closed cooling water circuit pressure drops and make-up happening, eventhough there is no leaks. And how Circuit pressure drops?

0 Answers  

---

Difference between directional earth fault and non-directional earth fault

2 Answers  

---

What is reheated protection

1 Answers  

---

why HT motor star not grounded?

4 Answers   Apollo,

---

We have 132KV/11KV Grid connected power transformer for getting power from Grid. Can we use this transformer for sending generated power as well. I mean step up from 11KV to 132KV and transmit.

6 Answers  

---

---

Is it not bad to bleed steam from turbine stages before utilizing its energy.

2 Answers  

---

why drum level falls when one of the running coal elevations tripped?

3 Answers   APGenco,

---

Can any one advised me how we can measure the losses in a 11kV/415v power transformer? We have no access to the incoming mains into the primary of the transformer. Can one derive something useful by measuring temperature rise in the transformer?

1 Answers   Dexdyne,

---

1 TPH how many Megawatt ?

5 Answers   Pioneer Labs, PSAL,

---

How to calculate power press toneage

0 Answers  

---

What are the turbine protections.

2 Answers  

---

How to control cooling tower alge

1 Answers   GPL, SPY Agro Industries,

---