S-PRO tests well to control harmonic oscillations

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Although wind farms provide clean, green power – they do pose one problem for utilities: harmonic oscillations.

Since wind farms are generally located far away from load centers, power flow is increased using series capacitors to compensate for transmission line reactance. Unfortunately series capacitors can interact with the wind system, creating undamped sub-harmonic current oscillations that can cause serious damage to wind turbine controllers and also to conventional generators.

The wind turbine's own mechanical system interactions tower-to-blade can also generate sub-harmonics, which are detrimental to induction generators, transformers, and may cause resonance at the point of common coupling in the electrical grid. By isolating the healthy grid from sub-harmonic generation sources, damage to the electrical interconnection can be prevented.

ERLPhase Power Technologies recently announced the S-PRO Sub-Harmonic Protection Relay is proving itself to help control harmonic oscillations at a Minnesota wind farm.

“The S-PRO was installed at a wind farm substation in Trimont, Minnesota to detect subharmonic oscillations occurring at adjacent wind farms connected to the series compensated line,” said Pratap Mysore, Consulting Engineer at Xcel Energy. “In tests so far, the unit has performed well and the relay has been designed well to detect and protect against sustained harmonics from the wind turbines.”

The S-PRO 4000 relay provides real-time processing of voltage and current signals with sub-harmonic monitoring at 1 Hz intervals between 5 and 25 Hz 5 Hz, 6 Hz, 7 HzÂ… 23 Hz, 24 Hz and 25 Hz. It protects the grid from sub-harmonic oscillations at the point-of-common-coupling every 1 second, with additional user-configurable delays.

“Our sub-harmonic protection relay S-PRO is the first advanced microprocessor-based relay with 10 second high speed recording capability. It can also be used for detecting Sub Synchronous Resonance SSR frequencies,” commented Krish Narendra, Vice President of Technology and Quality at ERLPhase.

ERLPhase has a history of pioneering innovative protection and monitoring solutions including transformer loss-of-life monitoring in the T-PRO Transformer Protection Relay, dynamic swing recording in the L-PRO Transmission Line Protection Relay, the use of low impedance current inputs in the B-PRO Bus Protection Relay, and dynamic swing record capture with cross triggering in the TESLA Power System Recorder. All these innovations now find wide spread industry application.

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Ontario will refurbish Pickering B NGS

Pickering nuclear refurbishment will modernize Ontario's Candu reactors at Pickering B, sustaining 2,000 MW of clean electricity, aiding net-zero goals, and aligning with Ontario Power Generation plans and Canadian Nuclear Safety Commission reviews.

 

Key Points

An 11-year overhaul of Pickering B Candu reactors to extend life, keep 2,000 MW online, and back Ontario net-zero grid.

✅ 11-year project; 11,000 annual jobs; $19.4B GDP impact.

✅ Refurbishes four Pickering B Candu units; maintains 2,000 MW.

✅ Requires Canadian Nuclear Safety Commission license approvals.

 

The Ontario government has announced its intention to pursue a Pickering refurbishment at the venerable nuclear power station, which has been operational for over fifty years. This move could extend the facility's life by another 30 years.

This decision is timely, as Ontario anticipates a significant surge in electricity demand and a growing electricity supply gap in the forthcoming years. Additionally, all provinces are grappling with new federal mandates for clean electricity, necessitating future power plants to achieve net-zero carbon emissions.

Todd Smith, the Energy Minister, is expected to endorse Ontario Power Generation's proposal for the plant's overhaul, as per a preliminary version of a government press release.

The renovation will focus on four Candu reactors, known collectively as Pickering B, which were originally commissioned in the early 1980s. This upgrade is projected to continue delivering 2,000 megawatts of power, equivalent to the current output of these units.

According to the press release, the project will span 11 years, create approximately 11,000 annual jobs, and contribute $19.4 billion to Ontario's GDP. However, the total budget for the project remains unspecified.

The project follows the ongoing refurbishment of four units at the nearby Darlington nuclear station, which is more than halfway completed with a budget of $12.8 billion.

The proposal awaits the Canadian Nuclear Safety Commission's approval, and officials face extension request timing considerations before key deadlines.

The Commission is also reviewing a prior request from OPG to extend the operational license of the existing Pickering B units until 2026. This extension would allow the plant to safely continue operating until the commencement of its renovation, pending approval.

 

Ontario's Ambitious Nuclear Strategy

The announcement regarding Pickering is part of Ontario's broader clean energy plan for an unprecedented expansion of nuclear power in Canada.

Last summer, the province announced its intention to nearly double the output at Bruce Power, currently the world's largest nuclear generating station.

Additionally, Ontario revealed SMR plans to construct three more alongside the existing project at Darlington. These reactors are expected to supply enough electricity to power around 1.2 million homes.

Discussions about revitalizing the Pickering facility began in 2022, after the station had been slated to close as planned amid debate, with Ontario Power Generation submitting a feasibility report to the government last summer.

The Ford government emphasized the necessity of this nuclear expansion to meet the increasing electricity demands anticipated from the auto sector's shift to electric vehicles, the steel industry's move away from coal-fired furnaces, and the growing population in Ontario.

Ontario's capability to attract major international car manufacturers like Volkswagen and Stellantis to produce electric vehicles and batteries is partly attributed to the fact that 90% of the province's electricity comes from non-fossil fuel sources.

 

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Electricity alert ends after Alberta forced to rely on reserves to run grid

Alberta Power Grid Level 2 Alert signals AESO reserve power usage, load management, supply shortage from generator outages, low wind, and limited imports, urging peak demand conservation to avoid blackouts and preserve grid reliability.

 

Key Points

An AESO status where reserves power the grid and load management is used during supply constraints to prevent blackouts.

✅ Triggered by outages, low wind, and reduced import capacity

✅ Peak hours 4 to 7 pm saw conservation requests

✅ Several hundred MW margin from Level 3 load shedding

 

Alberta's energy grid ran on reserves Wednesday, after multiple factors led to a supply shortage, a scenario explored in U.S. grid COVID response discussions as operators plan for contingencies.

At 3:52 p.m. Wednesday, the Alberta Electric System Operator issued a Level 2 alert, meaning that reserves were being used to supply energy requirements and that load management procedures had been implemented, while operators elsewhere adopted Ontario power staffing lockdown measures during COVID-19 for continuity. The alert ended at 6:06 p.m.

"This is due to unplanned generator outages, low wind and a reduction of import capability," the agency said in a post to social media. "Supply is tight but still meeting demand."

AESO spokesperson Mike Deising said the intertie with Saskatchewan had tripped off, and an issue on the British Columbia side of the border, as seen during BC Hydro storm response events, meant the province couldn't import power. 

"There are no blackouts … this just means we're using our reserve power, and that's a standard procedure we'll deploy," he said. 

AESO had asked that people reduce their energy consumption between 4 and 7 p.m., similar to Cal ISO conservation calls during grid strain, which is typically when peak use occurs. 

Deising said the system was several hundred MWs away from needing to move to an alert Level 3, with utilities such as FortisAlberta precautions in place to support continuity, which is when power is cut off to some customers in order to keep the system operating. Deising said Level 2 alerts are fairly rare and occur every few years. The last Level 3 alert was in 2013. 

According to the supply and demand report on AESO's website, the load on the grid at 5 p.m. was 10,643 MW.

That's down significantly from last week, when a heat wave pushed demand to record highs on the grid, with loads in the 11,700 MW range, contrasting with Ontario demand drop during COVID when many stayed home. 

A heat warning was issued Wednesday for Edmonton and surrounding areas shortly before 4 p.m., with temperatures above 29 C expected over the next three days, with many households seeing residential electricity use up during such periods. 

 

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Crews have restored power to more than 32,000 Gulf Power customers

Gulf Power Hurricane Michael Response details rapid power restoration, grid rebuilding, and linemen support across the Florida Panhandle, Panama City, and coastal areas after catastrophic winds, rain, and storm surge damaged transmission lines and substations.

 

Key Points

Gulf Power's effort to restore electricity after Hurricane Michael, including grid rebuilding and storm recovery.

✅ 3,000+ crews deployed for restoration and rebuilding

✅ Transmission, distribution, and substations severely damaged

✅ Panhandle customers warned of multi-week outages

 

Less than 24 hours ago, Hurricane Micheal devastated the residents in the Florida Panhandle with its heavy winds, rainfall and storm surge, as reflected in impact numbers across the region.

Gulf Power crews worked quickly through the night to restore power to their customers.

Linemen crews were dispatched from numerous of cities all over the U. S., reflecting FPL's massive Irma response to help those impacted by Hurricane Michael.

According to Jeff Rogers, Gulf Power spokesperson; “This was an unprecedented storm, and our customers will see an unprecedented response from Gulf Power. The destruction we’ve seen so far to this community and our electrical system is devastating — we’re seeing damage across our system, including distribution lines, transmission lines and substations.”

Gulf Power told Channel 3 said they dealt with issues like trees and heavy debris blocking roads from strong winds, and communications down can slow down the rebuilding and restoration process, but Gulf Power said they are prepared for this type of storm devastation.

According to Gulf Power, Hurricane Micheal caused so much damage to Panama City's electrical grid that crews not only had repair the lines, they had to rebuild the electrical system, a scenario similar to a complete rebuild seen after Hurricane Laura in Louisiana.

Gulf Power officials say, "Less than 24 hours after the storm, more than 3,000 storm personnel from around the country arrived in the Panama City area Thursday to begin the restoration and rebuilding process. So far, more than 4,000 customers have been restored on Panama City Beach. Power has been restored to all customers in Escambia, Santa Rosa and Okaloosa counties, and it’s expected that customers in Walton County will be restored tonight. But customers in the hardest hit areas should prepare to be without power for weeks, not days in some areas. Initial evaluations by Gulf Power indicate widespread, heavy damage to the electrical system in the Panama City area."

According to Gulf Power, crews have restored power to more than 32,000 Gulf Power customers in the wake of Hurricane Michael, but the work is just beginning for power restoration in the Panama City area.

Rogers said, “We’re heartbroken for our customers and our teammates who live in and near the Panama City area,” said Rogers. “This is the type of storm that changes lives — so aside from restoring power to our customers quickly and safely, our focus in the coming days and weeks will also be to help restore hope to these communities and help give them a sense of normalcy as soon as possible.”

 

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Sustaining U.S. Nuclear Power And Decarbonization

Existing Nuclear Reactor Lifetime Extension sustains carbon-free electricity, supports deep decarbonization, and advances net zero climate goals by preserving the US nuclear fleet, stabilizing the grid, and complementing advanced reactors.

 

Key Points

Extending licenses keeps carbon-free nuclear online, stabilizes grid, and accelerates decarbonization toward net zero.

✅ Preserves 24/7 carbon-free baseload to meet climate targets

✅ Avoids emissions and replacement costs from premature retirements

✅ Complements advanced reactors; reduces capital and material needs

 

Nuclear power is the single largest source of carbon-free energy in the United States and currently provides nearly 20 percent of the nation’s electrical demand. As a result, many analyses have investigated the potential of future nuclear energy contributions in addressing climate change and investing in carbon-free electricity across the sector. However, few assess the value of existing nuclear power reactors.

Research led by Pacific Northwest National Laboratory (PNNL) Earth scientist Son H. Kim, with the Joint Global Change Research Institute (JGCRI), a partnership between PNNL and the University of Maryland, has added insight to the scarce literature and is the first to evaluate nuclear energy for meeting deep decarbonization goals amid rising credit risks for nuclear power identified by Moody's. Kim sought to answer the question: How much do our existing nuclear reactors contribute to the mission of meeting the country’s climate goals, both now and if their operating licenses were extended?

As the world races to discover solutions for reaching net zero as part of the global energy transition now underway, Kim’s report quantifies the economic value of bringing the existing nuclear fleet into the year 2100. It outlines its significant contributions to limiting global warming.

Plants slated to close by 2050 could be among the most important players in a challenge requiring all available carbon-free technology solutions—emerging and existing—alongside renewable electricity in many regions, the report finds. New nuclear technology also has a part to play, and its contributions could be boosted by driving down construction costs.  

“Even modest reductions in capital costs could bring big climate benefits,” said Kim. “Significant effort has been incorporated into the design of advanced reactors to reduce the use of all materials in general, such as concrete and steel because that directly translates into reduced costs and carbon emissions.”

Nuclear power reactors face an uncertain future, and some utilities face investor pressure to release climate reports as well.
The nuclear power fleet in the United States consists of 93 operating reactors across 28 states. Most of these plants were constructed and deployed between 1970-1990. Half of the fleet has outlived its original operating license lifetime of 40 years. While most reactors have had their licenses renewed for an additional 20 years, and some for another 20, the total number of reactors that will receive a lifetime extension to operate a full 80 years from deployment is uncertain.

Other countries also rely on nuclear energy. In France, for example, nuclear energy provides 70 percent of the country’s power supply. They and other countries must also consider extending the lifetime, retiring, or building new, modern reactors while navigating Canadian climate policy implications for electricity grids. However, the U.S. faces the potential retirement of many reactors in a short period—this could have a far stronger impact than the staggered closures other countries may experience.

“Our existing nuclear power plants are aging, and with their current 60-year lifetimes, nearly all of them will be gone by 2050. It’s ironic. We have a net zero goal to reach by 2050, yet our single largest source of carbon-free electricity is at risk of closure, as seen in New Zealand's electricity transition debates,“ said Kim.

 

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Atlantic Canadians less charged up to buy electric vehicle than rest of Canada

Atlantic Canada EV adoption lags, a new poll finds, as fewer buyers consider electric vehicles amid limited charging infrastructure, lower provincial rebates, and affordability pressures in Nova Scotia and Newfoundland compared to B.C. and Quebec.

 

Key Points

Atlantic Canada EV adoption reflects demand, shaped by rebates, charging access, costs, and the regional energy mix.

✅ Poll shows lowest purchase intent in Atlantic Canada

✅ Lack of rebates and charging slows EV consideration

✅ Income and energy mix affect affordability and benefits

 

Atlantic Canadians are the least likely to buy a car, truck or SUV in the next year and the most skittish about going electric, according to a new poll. 

Only 31 per cent of Nova Scotians are looking at buying a new or used vehicle before December 2021 rolls around. And just 13 per cent of Newfoundlanders who are planning to buy are considering an electric vehicle. Both those numbers are the lowest in the country. Still, 47 per cent of Nova Scotians considering buying in the next year are thinking about electric options, according to the numbers gathered online by Logit Group and analyzed by Halifax-based Narrative Research. That compares to 41 per cent of Canadians contemplating a vehicle purchase within the next year, with 54 per cent of them considering going electric. 

“There’s still a high level of interest,” said Margaret Chapman, chief operating officer at Narrative Research.  

“I think half of people who are thinking about buying a vehicle thinking about electric is pretty significant. But I think it’s a little lower in Atlantic Canada compared to other parts of the country probably because the infrastructure isn’t quite what it might be elsewhere. And I think also it’s the availability of vehicles as well. Maybe it just hasn’t quite caught on here to the extent that it might have in, say, Ontario or B.C., where the highest level of interest is.” 


Provincial rebates
Provincial rebates also serve to create more interest, she said, citing New Brunswick's rebate program as an example in the region. 

“There’s a $7,500 rebate on top of the $5,000 you get from the feds in B.C. But in Nova Scotia there’s no provincial rebate,” Chapman said. “So I think that kind of thing actually is significant in whether you’re interested in buying an electric vehicle or not.” 

The survey was conducted online Nov. 11–13 with 1,231 Canadian adults. 

Of the people across Canada who said they were not considering an electric vehicle purchase, 55 per cent said a provincial rebate would make them more likely to consider one, she said.  

In Nova Scotia, that number drops to 43 per cent. 

Nova Scotia families have the lowest median after-tax income in the country, according to numbers released earlier this year.  

The national median in 2018 was $61,400, according to Statistics Canada. Nova Scotia was at the bottom of the pack with $52,200, up from $51,400 in 2017. 

So big price tags on electric vehicles might put them out of reach for many Nova Scotians, and a recent cost-focused survey found similar concerns nationwide. 

“I think it’s probably that combination of cost and infrastructure,” Chapman said. 

“But you saw this week in the financial update from the federal government that they’re putting $150 million into new charging station, so were some of that cash to be spread in Atlantic Canada, I’m sure there would be an increase in interest … The more charging stations around you see, you think ‘Alright, it might not be so hard to ensure that I don’t run out of power for my car.’ All of that stuff I think will start to pick up. But right now it is a little bit lagging in Atlantic Canada, and in Labrador infrastructure still lags despite a government push in N.L. to expand EVs.” 


'Simple dollars and cents'
The lack of a provincial government rebate here for electric vehicles definitely factors into the equation, said Sean O’Regan, president and chief executive officer of O'Regan's Automotive Group.  

“Where you see the highest adoption are in the provinces where there are large government rebates,” he said. “It’s a simple dollars and cents (thing). In Quebec, when you combine the rebates it’s up to over $10,000, if not $12,000, towards the car. If you can get that kind of a rebate on a car, I don’t know that it would matter much what it was – it would help sell it.” 

A lot of people who want to buy electric cars are trying to make a conscious decision about the environment, O’Regan said. 

While Nova Scotia Power is moving towards renewable energy, he points out that much of our electricity still comes from burning coal and other fossil fuels, and N.L. lags in energy efficiency as the region works to improve.  

“So the power that you get is not necessarily the cleanest of power,” O’Regan said. “The green advantage is not the same (in Nova Scotia as it is in provinces that produce a lot of hydro power).” 

Compared to five years ago, the charging infrastructure here is a lot better, he said. But it doesn’t compare well to provinces including Quebec and B.C., though Newfoundland recently completed its first fast-charging network for electric car owners. 

“Certainly (with) electric cars – we're selling more and more and more of them,” O'Regan said, noting the per centage would be in the single digits of his overall sales. “But you're starting from zero a few years ago.” 

The highest number of people looking at buying electric cars was in B.C., with 57 per cent of those looking at buying a car saying they’d go electric, and even in southern Alberta interest is growing; like Bob Dylan in 1965 at the Newport Folk Festival.  

“The trends move from west to east across Canada,” said Jeff Farwell, chief executive officer of the All EV Canada electric car store in Burnside.  

“I would use the example of the craft beer market. It started in B.C. about 15 years before it finally went crazy in Nova Scotia. And if you look at Vancouver right now there’s (electric vehicles) everywhere.” 


Expectations high
Farwell expects electric vehicle sales to take off faster in Atlantic Canada than the craft beer market. “A lot faster.” 

His company also sells used electric vehicles in Prince Edward Island and is making moves to set up in Moncton, N.B. 

He’s been talking to Nova Scotia’s Department of Energy and Mines about creating rebates here for new and used electric vehicles. 

 “I guess they’re interested, but nothing’s happened,” Farwell said.  

Electric vehicles require “a bit of a lifestyle change,” he said. 

“The misconception is it takes a lot longer to charge a vehicle if it’s electric and gas only takes me 10 minutes to fill up at the gas station,” Farwell said.  

“The reality is when I go home at night, I plug my vehicle in,” he said. “I get up in the morning and I unplug it and I never have to think about it. It takes two seconds.”  
 

 

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Ottawa hands N.L. $5.2 billion for troubled Muskrat Falls hydro project

Muskrat Falls funding deal delivers federal relief to Newfoundland and Labrador: Justin Trudeau outlines loan guarantees, transmission investment, Hibernia royalties, and $10-a-day child care to stabilize hydroelectric costs and curb electricity rate hikes.

 

Key Points

A $5.2b federal plan aiding NL hydro via loan guarantees, transmission funds, and Hibernia royalties to curb power rates.

✅ $1b for transmission and $1b in federal loan guarantees

✅ $3.2b via Hibernia royalty transfers through 2047

✅ Limits power rate hikes; adds $10-a-day child care in NL

 

Prime Minister Justin Trudeau was in Newfoundland and Labrador Wednesday to announce a $5.2-billion ratepayer protection plan to help the province cover the costs of a troubled hydroelectric project ahead of an expected federal election call.

Trudeau's visit to St. John's, N.L., wrapped up a two-day tour of Atlantic Canada that featured several major funding commitments, and he concluded his day in Newfoundland and Labrador by announcing the province will become the fourth to strike a deal with Ottawa for a $10-a-day child-care program.

As he addressed reporters, the prime minister was flanked by the six Liberal members of Parliament from the province. He alluded to the mismanagement that led the over-budget Muskrat Falls hydroelectric project to become what Liberal Premier Andrew Furey has called an "anchor around the collective souls" of the province.

"The pressures and challenges faced by Newfoundlanders and Labradorians for mistakes made in the past is something that Canadians all needed to step up on, and that's exactly what we did," Trudeau said.

Furey, who joined Trudeau for the two announcements and was effusive in his praise for the federal government, said the federal funding will help Newfoundland and Labrador avoid a spike in electricity rates as customers start paying for Muskrat Falls ahead of when the project begins generating power this November.

"Muskrat Falls has been the No. 1 issue facing Newfoundlanders and Labradorians now for well over a decade," Furey said, adding that he is regularly asked by people whether their electricity rates are going to double, a concern other provinces address through rate legislation in Ontario as well.

"We landed on a deal today that I think -- I know -- is a big deal for Newfoundland and Labrador and will finally get the muskrat off our back," he said.

The agreement-in-principle between the two governments includes a $1-billion investment from Ottawa in a transmission through Quebec portion of the project, as well as $1 billion in loan guarantees. The rest will come from annual transfers from Ottawa equivalent to its annual royalty gains from its share in the Hibernia offshore oilfield, which sits off the coast of St. John's. Those transfers are expected to add up to about $3.2 billion between now and 2047, when the oilfield is expected to run dry.

The money will help cover costs set to come due when the Labrador project comes online, preventing rate increases that would have been needed to pay the bills, and officials have discussed a lump-sum bill credit to help households. Though electricity rates in the province will still rise, to 14.7 cents per kilowatt hour from the current 12.5 cents, that's well below the projected 23 cents that officials had said would be needed to cover the project's costs.

Muskrat Falls was commissioned in 2012 at a cost of $7.4 billion, but its price tag has since ballooned to $13.1 billion. Ottawa previously backed the project with billions of dollars in loan guarantees, and in December, Trudeau announced he had appointed Serge Dupont, former deputy clerk of the Privy Council, to oversee rate mitigation talks with the province about financially restructuring the project.

Its looming impact on the provincial budget is set against an already grim financial situation: the province projected an $826-million deficit in its latest budget, and a recent financial update from the provincial energy corporation reflected pandemic impacts, coupled with $17.2 billion in net debt.

After visiting with children from a daycare centre in the College of the North Atlantic, Trudeau and Furey announced that in 2023, the average cost of regulated child care in the province for children under six would be cut to $10 a day from $25 a day. Trudeau said that within five years, almost 6,000 new daycare spaces would be created in the province.

"As part of the agreement, a new full-day, year-round pre-kindergarten program for four-year-olds will also start rolling out in 2023," the prime minister told reporters. "For parents, this agreement is huge."

Newfoundland and Labrador is the fourth province, after Prince Edward Island, Nova Scotia and British Columbia, to sign on to the federal government's child-care program.

 

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