Answer / mebin g mathew

According to the report, Some of the high voltage lines of
Northern Grid were under maintenance and hence the other
lines were highly loaded EVEN 400kv line was used to
compensate the power shutdown of 765 KV LINE. So the 400 KV
line was highly loaded. Due to this the, line tripped and
this worsened the condition load bearing problem for the
other line since all the power requirement came to other
lines. They also started tripping in power swing and some
relays even detected zone 3 tripping(false tripping).

When a huge load was released, the power plant had to shut
them down to protect the generators and other equipments in
plant. A power plant require hours to reignite and start the
production in full flex. And there was a panic to
immediately start production because all were shocked of
the incident.

So thus the norther grid was isolated from other region
grid. That led to a complete black out in North India.The
report ends with an interesting statement that this might
have happened due to hacking of powergrids PLC engineering PC.

How can you sized or estimate the ligthning arrester current rating?

0 Answers  

---

How shall i design a liquid rotor starter

0 Answers  

---

what are the type of transformer?

4 Answers  

---

Iam deepthi.i completed my b.tech from electrical engineering.i want to prepare for civil services.i dont have much knowledge about these exams,but i have great zeal of cracking exams.plz provide me suggestions to which options i can select for optionals

7 Answers  

---

what is the signification of trivector meter? why its name is trivector meter ?

3 Answers  

---

In a circuit a capacitor (paper capacitor ) was burned due to over voltage in this case can we replace that type cappacitor with other tye capacitor ?

1 Answers  

---

How to calculate the average power factor in 3 phase unbalanced system

5 Answers   Bhel, MacLellan,

---

how many parameters can integrate with fire alarm basically ?

0 Answers   Schneider,

---

What's is the difference between IVT and CVT?

1 Answers   CPCL,

---

hello freinds what is advantage and disadvantage of plc again dcs?

2 Answers  

---

Shall we use Dyn1 transformer in place of Dyn11 for motor application as a distribution transformer

1 Answers   NSL Sugars,

---

what is voltage gradient?

8 Answers   Bhel,

---