Build your professional network on facebook via our app Go to app
 
 
Posted in Community :

Tech World

 

Which type of Power Transmission Systems Is Better In todays World???????

Created by : Rasla.MB , Senior Associate, Genpact  | 10 20 2010 11:28:54 +0000
Keywords : which type of power transmission systems is better in todays world???????
Activity:  1604 views;  last activity : 08 01 2012 06:52:00 +0000

Electric power transmission or "High Voltage Electric Transmission" is the bulk transfer of electrical energy, from generating power plants to substations located near to population centers. This is distinct from the local wiring between high voltage substations and customers, which is typically referred to as electricity distribution.

http://greenjersey.org/wp-content/uploads/2008/12/power_lines_web.jpg

Transmission lines, when interconnected with each other, become high voltage transmission networks. In this revolutionary World both HVAC Power Transmission System and HVDC Power Transmission are using. According To You which type of "Power Transmission System" is useful in todays World........................

  
 Refer 245
Share
 
 
  Rate : 
 
 
HVDC Vs HVAC
6
 
 
 
 
1
6
1
Support   Support
Top Argument
1
0

According to my Point of view, HVDC System is better compared to HVAC. Because HVDC is the ability to transmit large amounts of power over long distances with lower capital costs and with lower losses than AC. Depending on voltage level and construction details, losses are quoted as about 3% per 1,000 km.High-voltage direct current transmission allows efficient use of energy sources remote from load centers.HVDC can carry more power per conductor  because, for a given power rating, the constant voltage in a DC line is lower than the peak voltage in an AC line. The power delivered is defined by the root mean square  (RMS) of an AC voltage, but RMS is only about 71% of the peak voltage. The peak voltage of AC determines the actual insulation thickness and conductor spacing. Because DC operates at a constant maximum voltage, this allows existing transmission line corridors with equally sized conductors and insulation to carry more power into an area of high power consumption than AC, which can lower costs.

Because HVDC allows power transmission between unsynchronized AC distribution systems, it can help increase system stability, by preventing cascading failures from propagating from one part of a wider power transmission grid to another. Changes in load that would cause portions of an AC network to become unsynchronized and separate would not similarly affect a DC link, and the power flow through the DC link would tend to stabilize the AC network. The magnitude and direction of power flow through a DC link can be directly commanded, and changed as needed to support the AC networks at either end of the DC link. This has caused many power system operators to contemplate wider use of HVDC technology for its stability benefits alone.
By Rasla.MB , Senior Associate, Genpact  10 20 2010 12:44:45 +0000
 
0
0

Hai Bipin, Thanks For Supporting HVDC.......and thank You for participating the debate
By TooStep Team, Consultant, TooStep  | 10 21 2010 06:11:37 +0000
1
0

Thanks Rasla for your referral.....I am suppoting HVDC Transmission system. Because Undersea HVDC cables have more electromagnetic comparability with the marine environment as the varying electric and magnetic fields of primarily single phase HVAC cable may have negative effects on the marine ecosystem near the cable...In a number of applications HVDC is more effective than AC transmission like Endpoint-to-endpoint long-haul bulk power transmission without intermediate 'taps', for example, in remote areas, Increasing the capacity of an existing power grid in situations where additional wires are difficult or expensive to install, Power transmission and stabilization between unsynchronised AC distribution systems....
By Bipin Lal, B.Tech/B.E. student  | 10 21 2010 06:04:09 +0000
0
0

Hey Shikha, Thanks For Participating this debate..... But i am not agreeeing with your view.We should think always forward yarrrrr,,,,,,,,
By TooStep Team, Consultant, TooStep  | 10 21 2010 05:45:34 +0000
0
0

Hai Badri N Srinivasan.........I am really thankful for your valuable information regarding HVDC. I really Support your point of view.........
By Rasla.MB , Senior Associate, Genpact  | 10 21 2010 05:11:16 +0000
1
0

An IEEE paper has indicated the following points -  

Alternating current (AC) is the main driving force in the industries and residential areas, but for the long transmission line (more than 400 miles), AC transmission is more expensive than that of direct current (DC). Technically, AC transmission line control is more complicated because of the frequency. DC transmission does not have these limitations. This has has led to long HVDC transmission lines being built over the last 40 years. HVDC technology has made it possible to transfer bulk power over long distances.

 Long distances are technically unreachable by HVAC line without intermediate reactive compensations. The frequency and the intermediate reactive components cause stability problems in AC line. On the other hand, HVDC transmission does not have the stability problem because of the absence of the frequency and thus, no distance limitation. The cost per unit length of a HVDC line is lower than that of a HVAC line of the same power capability and comparable reliability, but the cost of the terminal equipment of a HVDC line is much higher than that of the HVAC line. The breakeven distance of overhead lines between AC and DC line lies in a range from 500 km (310 miles) to 800 km (497 miles). Generally, the HVDC line also has less effect
on the human and the natural environment, which makes the HVDC friendlier to environment.

However, depending on the requirement, the specific type of transmission systems need to be explored....

Thanks for the referral, Rasla....
By Badri N Srinivasan, Head - Quality, Valtech India Systems Pvt. Ltd.  | 10 20 2010 13:25:44 +0000
0
1

I would like to oppose here.....Alternating current (AC) is the main driving force in the industries and residential areas. I think HVDC are its higer costs and that it remains a technology that can only applied in point-to-point applications because of lack of an economic and reliable HVDC circuit breaker.

Also the lack of an HVDC circuit breaker reflects the technological problem that a direct current system doesnot have a point where its voltage is zero as in an alternating current system(HVAC). An HVAC circuit breaker utilizes when it open an HVAC circuit. Moreover HVDC required static inverters are expensive and have limited overload capacity.
By Shikha Malhotra, Product Development Manager, Reliance Petroleum  | 10 20 2010 14:31:47 +0000
Argue for "HVDC"
Argue for "HVAC"
 Found the debate "Which type of Power Transmission Systems Is Better In todays World???????"  interesting ?  Suggest to your connections and communities  
Leading Executive Search Firm
  • Create a confidential Career Profile and Resume/C.V. online
  • Get advice for planning their career and for marketing of experience and skills
  • Maximize awareness of and access to the best career opportunities
Viewers also viewed
 
114 referals 7 votes, 673 views
Power consumption increases in summer and then we see power crisis. Every time there is power...
 
510 referals 14 arguments, 482 views
human adapted with natural surroundings vs Geek with updated technology
 
159 referals 35 arguments, 392 views
more...  
 
Sponsored Jobs
More From Author
According to me Its not only the doctors corrupted by money.....Corruption occurs every where, in every field....Its because Money is the root of all evil for those who take advantage of people who are good. Money is evil when it is put into the hands...
Hey Sangram i liked your post.....According to me i think poverty is cyclical. It is a generational cycle that is extremely hard to break. It is taught to the children by the parents. It is a way of life that is learned and accepted. In the beginning...
Add your comment...Hey Sangram i liked your post.....Axxording to me poverty is cyclical. It is a generational cycle that is extremely hard to break. It is taught to the children by the parents. It is a way of life that is learned and accepted. In the...
more...  
  • Popular Knowledge
  •  
  •  
  • Popular Jobs
  •