DG set specification

I search some literature about your question, If you like, please tell me your email, I will send that to you. As for a diesel generator , are you interested in the photovoltaics generating system ? if so , please tell me . I can introduce my friend to you for the detailed information.

Assuming you have mains power most of the time and the DG set only for emergencies, you need to find out the 'essentials'...the absolute minimum load that MUST never stop for lack of power. That value, with some 10% margin, will be enough for you.

So only the load is required for selecting it what about other mechanical and electrical specifications.

Mechanical would include parameters like noise, diesel consumption per kWH and such things.

Electrical would include %regulation, ability to take surge loads (this may also be mechanical since it decides the flywheel) if applicable....maybe some more i can't think of now.

You would need perhaps an ATS, with neutral isolation.

How do an engineer analyse a plant to design a DG set. Please be kind to explain it.

Dear friend,

I dont think you can be a professional designer by getting info in such a way. Whatever i will tell you some basics for the specification of generator set.

1.Generator is for prime rating or standby rating.

2.Operation requirements.

3. Engine details.

4.Starting system.

5.Alternator

6.Generator set mounting.

7. Coupling

8.Engine control panel and protective devices.

9.Exhaust sytem.

10.Base frame construction.

11.Day fuel tank and fuel pump system.

12.Generator earthing.

13.Automatic transfer switch.

14. Alarms and data monitoring

15.Tests on site.

16.Visual inspection.

17.Preliminary inspection check.

18.Preliminary running test.

19.Load test.

20. Transient load switching

21.Insulation test

22.Functional test

23.Schedule of requirements

24.Any information required from manufacturer.

25.Safety

26.Approved manufacturer list.

27.drawings

28.spare parts.

30.Warranty

31.Applicable standards.

None of the above details can decide by yourself as all has already fixed based on international standards, safety and manufacturer data. You can only select the details whatever appropriately matching for your requirements.

Note:- Original specification is never written by the engineer who work for client,contractor or consultant. Specification is data just copied from different manufactures product data and standards.

Thats great what about some basic calculations like load of the plant and required capacity of generator.How is that determined?

To gain good knowledge in design and specifications of generators, go to

http://www.ieee.org

Type in the search term: standby generator

You will see a list of recommended readings. Enjoy.

In addition to above issues since you mention you are in a steel plant what exactly you mean steel plant whats your load types and whats your main source of electrical power you need to know the rating of DG you need is prime or continues rating, do you have regenerative loads like cranes,whats your inductive loads,like a inductive furnace whats your patron of loading in Step loads or whats the quantum of loads you would be applying on the gen set when you load the gen set in first,second and third steps whats your load factor,Diversity factor do you have non leaner loads like SCR controlled equipments and VFDs etc also counts for sizing a gen i a nutshell you need to describe your application clearly perhaps we can help you

crm

Mr. Whats,........whats the hell you have written here what your intention exactly whats your source of facts whats you mean by prime or continous rating,whats matter here first second third steps whats ...whats ....whats

selection of DG set capacity depends on

1) Essential loads to be run on DG set

2)Any specefic single load requiring higher starting current( say a blower motor of 100hp which require heavy starting current -generally DOL )

3) Any load with thyristor controls

The terminal voltage dip of DG should be with in limit . Engine should have enough power to take heavy start ups with fast response of governer to keep speed normal

selection of generator based on load and generator specification are both different. It is like first you select type of cloth cotton,silk,polyster etc and then make the dress in the proper size.

Dear Mr. Hithuaanad,

In this link, Mr.Alavanderi, has given exaustive list. I want to supplement to his list and they are

1. Capacity of DG SET will be decided by the Motor H.P.,to be started, and kick Load Level and related transient state.

2. Type of Starter to be used.

3. Efficiency of the system to be included.

DHAYANANDHAN.S

Try looking under Energy producing Diesel engineered Waste to Energy System used

in Sweden I think,its been years ago since i was looking for it.They keep it operating

by feeding it garbage.