HOW SDG&E'S SMART DEVICES HELPED RESTORE POWER TO THEIR CUSTOMERS

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Originally Published in the ECOreport

By Roy L Hales 

San Diego’s grid has endured an onslaught. A record breaking 5-day-long heat wave, that produced back to back peak demand records of 4,781 megawatts (MW) and 4,890 MW. There were high winds, microbursts followed by sudden downpours and flooding. A lot of trees fell and there were several outages. Repair crews worked round the clock. Some worked 24 hour shifts. Hanan Eisenman, Communications Manager for San Diego Gas & Electric (SDG&E), explained how SDG&E’s smart grid devices helped restore power to their customers.

SDG&E has the largest weather sensor network in the US, with 150 sensors throughout their service territory.

“We use these to track adverse weather conditions to improve our situational awareness of the grid and make it more reliable,” said Hanan Eisenman, Communications Manager, SDG&E. “They also enable us to respond quicker during heirous fire seasons or weather events like this.”

Thanks to the weather sensors, SDG&E knew where the microbursts were developing. Crews were rushed to the threatened areas and ready when the microbursts occurred.

They used SCADA devises to avoid the faults and reroute power to the effected locations quicker.

“SCADA are like automated switches so that instead of sending a crewman out to flip the switch and get the power going around an area, you can switch those lines from a control room,” Eisenman explained. “It is basically automated switching technology. You can look at your grid and see where there is a fault. I can reroute that power, by switching to a different line, then I can bring the power back in that area sooner.”

SDG&E also employed wireless fault indicators to pinpoint the problems in distribution lines, so crews could find and repair them quicker.

There were a lot of crews working around the clock, but smart technology enabled them to repair the damages faster.

With obvious pride in his voice, Eisenman said, “That’s what we do in SDG&E, we are known as a very reliable utility. We’ve been ‘Best in the West’ for reliability eight years in a row. It is one of our core missions, so when an outage happens we respond quickly.”

Photo courtesy SDG&E 

 

 


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Comments

But...

for the prices they charge the stuff ought to fix itself!