Archive for ‘Electricity’

20/09/2012

* China consumes more clean-energy-generated power

China Daily: “China consumed 615.5 billion kilowatt-hours (kwh) of electricity generated by clean energy sources in the first eight months of the year, according to statistics from the State Electricity Regulatory Commission.

The figure accounted for 19.3 percent of the country’s total on-grid power during the period, an increase of 1.1 percentage points from the same period last year, the commission said.

In breakdown, electricity produced from hydropower, wind power and nuclear power expanded 20.6 percent, 32.4 percent and 10.5 percent, respectively, to 489 billion kwh, 63.5 billion kwh and 63.3 billion kwh during the January-August period.

As of the end of August, China’s hydropower generation capacity rose 6.7 percent year on year to 203.83 million kilowatts, while wind and nuclear power generation capacity added 37.2 percent and 5.6 percent, respectively, to 54.37 million kilowatts and 12.57 million kilowatts.

To meet the target of cutting energy use per unit of GDP by 16 percent by 2015 from the level in 2011, China has taken a slew of measures, including increasing investments in clean energy, to boost the share of non-fossil fuels in its power structure.”

via China consumes more clean-energy-generated power |Sci-Tech |chinadaily.com.cn.

31/07/2012

* Powerless again: Northern, eastern grids fail

The Hindu: “The northern and eastern grids tripped on Tuesday, leading to power failure in several States of the country affecting hundreds of millions of people.

The northern grid collapsed for a second day on Tuesday afternoon, hours after the power supply was restored in the entire northern region following a disruption on Monday. The eastern transmission lines too failed on Tuesday afternoon, said officials at the Power Ministry and electricity companies.

Services in the national capital came to a grinding halt as power supply snapped around 1.30 p.m. The load fell to 40 MW and all of Delhi’s generation station stopped working, because of the cascading effect of the fault in the grid.

“We don’t have the details yet, but yes, there is a problem with the Grid again. Right now, the priority is to secure power supply for emergency services,” said a senior official of the Delhi Government’s Power Department.

On Monday, eight states attached to the Norther Region plunged into darkness after a grid collapse.

PTI adds:

Power supply was disrupted in Delhi, Uttar Pradesh, Haryana, West Bengal, Assam and Punjab, among other States.

“Yes, I’ve heard that the northern and eastern grids have failed. We are looking into the matter. We are inquiring,” Power Minister Sushilkumar Shinde said.

The power crisis led to immediate shutdown of Delhi Metro lines in the national capital, while a host of other services including railways were also affected.

“We are again having problems in northern grid,” K. Soonee, CEO of Power System Operating Co said.

Power Ministry officials said that eastern grid has also failed. The reasons for the grid failure were not immediately known.

While an almost 15-hour power crisis was seen in the northern part on Monday, the crisis on Tuesday reached the eastern region as well.”

via The Hindu : News / National : Powerless again: Northern, eastern grids fail.

30/07/2012

* Northern India hit by one of the worst power breakdowns

The Hindu: “In what was one of the worst power breakdowns in the country, the Northern Grid crashed early Monday morning plunging eight states into complete darkness, disrupting inter-state train services, adversely hitting health services and impacting millions of lives.

The tripping of the 400 KV Bina-Gwalior line, which flows into Agra-Bareilly at 2.35 a.m. wreaked havoc on the power generation and transmission systems leading to shut down of all major power plants including hydro power stations in the States of Punjab, Haryana, Rajasthan, Delhi, Uttrakhand, Himachal Pradesh, Jammu and Kashmir and the Union Territory of Chandigarh, which are all a part of the Northern Grid.

The immediate impact of the grid collapse was the shortage of around 32,000 MW of power. The last such collapse of the Northern Grid, which caters to around 28 per cent of the country’s population, took place in 2001. India currently faces around 8 to 12 per cent peak power deficit, according to the Central Electricity Authority (CEA).

The massive shutdown had a crippling effect on inter-state passenger and goods trains that came to a screeching halt. Early morning office goers and school children had a harrowing time as traffic signals went on the blink leading to traffic chaos in the affected States including the Capital Delhi.

Hospitals too had to scurry around for alternatives and back up supply. A majority of the hospitals claimed to have alternate supply arrangements, yet reports of services being disrupted trickled in from several places.

Operations at the major oil refineries in Panipat, Mathura and Bhatinda remained unaffected as these facilities have their own captive power plants and do not rely on the grid for supply.

While Power Minister, Sushil Kumar Shinde said he could not pin point the exact reason for the collapse, PGCIL and Northern Region Load Despatch Centre officials said that it was rampant overdrawal by Uttar Pradesh, Punjab and Haryana that led to the collapse that in turn paralysed services.

The last time the grid collapse occurred was in 2001, it has happened now after 10 years. At that time, the power breakdown took place at midnight and normalcy was restored by 4.30 pm.

PGCIL chairman and managing director, R.N. Nayak said the situation had been restored to normal by 4 pm. The Northern grid was generating around 29000 MW of power by late evening, which was about 2000 MW of the peak demand.

Hit by the sudden collapse of the grid system, the Power Grid Corporation of India Limited (PGCIL) officials swung into action with Mr. Nayak and his team of officials reaching their monitoring centre at 3 a.m. to assess the situation and work on a rescue package. By 8 a.m., PGCIL officials claimed to have restored around 40 per cent of power.”

via The Hindu : News / National : Northern India hit by one of the worst power breakdowns.

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