CAN/CSA C22.3 No Electrical Stations Advice

Transcription

1 CAN/CSA C22.3 No Electrical Stations Advice Utility Advisory Council October 5, 2017 Electrical Stations Current Regulation 22/04 Section 5(4) When safety standards met 5. (4) Distribution stations that meet the requirements set out in Rules to of section 2 and in sections 3, 4, 10, 12, 14, 18, 26, 28, 36, 75, 80 and 84 of the ESC or that meet the requirements of National Electrical Safety Code C are deemed to meet the safety standards set out in subsections 4 (2) and (6). O. Reg. 22/04, s. 5 (4). 2 1

2 Electrical Stations Scope 1 Scope This Standard specifies requirements for the design and the erection of electrical power installations (stations) in systems with nominal voltages above 1 kv a.c. and nominal frequency up to and including 60 Hz, so as to provide for safety of persons and proper functioning of the installation. This Standard applies to indoor substations, generating stations, and fenced outdoor supply stations and substations (including supply substations on customer premises). 3 Survey Monkey Results 4 2

3 5 Advice Discussion of Results 1. Does the UAC support adding C22.3 No as an option under Regulation 22/04? 2. Does the UAC support leaving the NESC as an option under Regulation 22/04? 6 3

4 7 UPDATE NOVEMBER 2015 Comments Q1: Do you currently use Other #1 our own Other #2 CSA overhead and underground Q2: What you use Other #1 IEEE Std 80 Other #2 our own 8 4

5 30/11/2017 Clean energy transition for the mining industry A Pan-Canadian Project with Broad Stakeholder Participation Michelle Levesque, Marc Bétournay, André Harvey, Gilles LeBlanc, David Young, Pejman Nekoovaght CanmetMINING Sa Majesté la Reine du chef du Canada, représentée par le ministre des Ressources naturelles, 2017 The objective of this project is to replace diesel powered equipment with a clean energy alternative 1

6 30/11/2017 There are many drivers for adoption of clean energy in underground mines Workplace health (elimination of carcinogenic diesel emissions) Reduced pollutants (GHG, DPM), heat and noise Opportunities to reduce ventilation costs Opportunities to improve remote-control mining Sa Majesté la Reine du chef du Canada, représentée par le ministre des Ressources naturelles, 2017 Commercially Available and Allowable Alternate Energies Allowed Underground Hydrogen fuel cells Lithium-Ion batteries Not Allowed Underground d x Gasoline x Natural gas internal combustion engine x Hydrogen gas internal combustion engine Sa Majesté la Reine du chef du Canada, représentée par le ministre des Ressources naturelles,

7 30/11/2017 Readiness of Vehicle Power Alternatives for Application Each option must be approved by regulators Mining Power Plant Designed Mining Refueling System Main Regulatory Requirements Work Done for Regulatory Compliance Current Underground Mining Application Hydrogen Fuel Cells Lithium-Ion Batteries Done Done Hydrogen leaks, ignition In progress 80% Shock and vibration impact, spontaneous fires, toxic leaks 50% Demonstration 10% Demonstration Sa Majesté la Reine du chef du Canada, représentée par le ministre des Ressources naturelles, 2017 Full Mine Electrification - Addressing Knowledge Gaps Energy consumption data Equipment performance Electrical process control requirements Return on investment: alternative energies, process controls De-risking clean energy, establishing standards and mine regulations Energy and GHG management tools Sa Majesté la Reine du chef du Canada, représentée par le ministre des Ressources naturelles,

8 30/11/2017 Full Mine Electrification - Overview Participants Mining industry Project facilitators, experts Electrical utilities Alternate-energy providers Process control experts Electrical testing and standards Mine regulators Full Mine Electrification Project Outcomes Data, codes, standards, regulations Mine transition road map Regulated and standardized equipment Energy and GHG benchmarking procedures Energy audit standards, energy management Electrification cost, return on investment Business cases for mine case study electrification Sa Majesté la Reine du chef du Canada, représentée par le ministre des Ressources naturelles,

9 30/11/2017 There are many benefits for industry and Canada Reduction 30% industry GHG s Elimination of carcinogenic diesel emissions 40% ventilation electrical consumption reduction Efficiencies in other mine processes Market development (advanced controls, electric equipment) Vehicle alternate energy power plant sales CDN$200M Position Canada as the leader of green mining and strengthen public confidence in corporate respect for the environment Sa Majesté la Reine du chef du Canada, représentée par le ministre des Ressources naturelles, 2017 This aligns well with the Pan-Canadian Framework on Clean Growth and Climate Change Industry is dedicated to replacing diesel power several all-electric projects are being planned Reduction of health liability, energy and GHG is significant Alternative energy and process control technologies are commercially available Expertise availability in Canada Broad spectrum of Provincial and Federal stakeholders Sa Majesté la Reine du chef du Canada, représentée par le ministre des Ressources naturelles,

10 Cable Limiters: Industry Poll Utility Advisory Council October 5, 2017 Cable Limiter: Introduction The Utility Advisory Council for Regulation 22/04 is requesting LDCs provide information on the use of Cable Limiters within their distribution systems, specifically with respect to short runs of service conductors (<750V). The feedback will help inform other LDCs about the use of Cable Limiters for this application. The survey consists of 3 questions and should take approximately 5 minutes to complete. The poll will be closing October??, Your responses are greatly appreciated. Survey Link: *** Cable limiters are distinguished from fuses by their intended purpose of providing only short circuit response: they are not designed to provide overload Protection. 2 1

11 Cable Limiter: Potential Questions Does your LDC use cable limiters in short runs from padmounted transformers to a customer s meter base? a) Yes. b) No. Are you aware of any issues with using cable limiters in short runs from padmounted transformers to a customer s meter base? a) If yes, please specify. b) No. If you use cable limiters from padmounted transformers to a customer s s meter base do you install them in: a) The padmount transformer? b) The meter base? c) It is optional to install them either in the transformer or the meter base. d) We do not use cable limiters in this manner. 3 2

12 Meter Base Mounted Transfer Device Bulletin Utility Advisory Council October 5, 2017 Bulletin - Update DETAILED INFORMATION: Approved, customer-ownedowned automatic transfer devices that plug directly into a customer s meter base are available. ESA considers the following as acceptable requirements to meet Rule (Approval of Electrical Equipment) for meter-mounted transfer switches, such as Generlink, for Ontario: Field Evaluation by a recognized Field Evaluation agency (Inspection Body), or Certification to UL Standard, UL1008M *** ***At the time of issuance of this bulletin there is no applicable Canadian standard for meter mounted transfer devices. Once a Canadian standard is available, ESA will review the direction. 2 1

13 Factors to Consider for Damaged Consumers' Services During Emergencies Martin Post Electrical Safety Authority October 5, 2017 Purpose This bulletin is intended to provide guidance to Local Distribution Companies, during emergencies only, when LDC line crews need to decide whether to disconnect a residential customer s service or leave the service energized

14 Background During wide spread emergencies, such as ice and wind storms, there is a high probability that many overhead customer s services will be damaged by ice, fallen tree limbs, etc. Completing repairs for a large number of damaged customer s services may take some time depending on the availability of manpower and materials. 3 POWERLINE SAFETY IN ONTARIO 3 Background In order to maintain power, in the interest of public safety, care must be taken when leaving damaged services energized to avoid undue electrical hazards. In non-emergency situations, if a customer s damaged service is creating an electrical hazard, the LDC should disconnect the customer service, advise the customer that repairs are required and an ESA Inspection must be completed before the power can be restored. 4 POWERLINE SAFETY IN ONTARIO 4 2

15 Factors to Consider The following two factors should be considered to determine whether to disconnect the customer service or not: The condition of the conductors and service equipment The clearance to roadways, driveways, sidewalks, etc Where the overhead supply service is damaged and still energized, (including down on the ground), a qualified person needs to assess if anything has been electrically compromised. Each site needs to be assessed on its own safety merits; in some cases disconnection may be required in the interest of public safety. 5 POWERLINE SAFETY IN ONTARIO 5 1. Significantly bent metallic customer service mast When a rigid metallic mast or customer service conduit is broken or significantly bent, the conductors may be damaged due to sharp edges inside the mast. 1. For safety reasons the LDC should immediately disconnect the service. No attempt shall be made to straighten the mast or customer service conduit. 2. The LDC may provide a temporary feed directly to the meter base. 6 POWERLINE SAFETY IN ONTARIO 6 3

16 2. Slightly bent metallic customer service mast If a rigid metallic mast or customer service conduit is slightly bent, not cracked, and the bend is unlikely to damage the customer service conductor, the service may be left energized if it meets the following conditions: The terminals/supports inside the meter base are not damaged; Overhead conductors are barriered so that unauthorized persons do not come into contact / draw arcs under reasonably foreseeable circumstances; and An ESA Hazard Notification has been or will be initiated and the customer has been or will be advised that repairs are required. 7 POWERLINE SAFETY IN ONTARIO 3. Damaged non-metallic (PVC) customer service conduit If a non-metallic (PVC) customer service conduit is damaged, either broken or pulled apart, the service may be left energized if it meets the following conditions: The conductor insulation is intact; The terminals/supports inside the meter base are not damaged; Overhead conductors are barriered such that unauthorized persons do not come into contact with them or draw arcs under reasonably foreseeable circumstances; and The customer has been or will be advised that repairs are required. 8 POWERLINE SAFETY IN ONTARIO 4

17 Other Factors to Consider 1. ESA recommends where possible to use Meter Socket Adapters for temporary connections. 2. It is imperative that the continuity of the neutral conductor be maintained. Loss of neutral continuity may create dangerous voltage imbalances on the customer s service and distribution equipment. The service ground conductor shall not be used as a neutral, even on a temporary basis. 9 POWERLINE SAFETY IN ONTARIO 9 ESA DIRECTION 1. ESA recommends that the LDC advise the customer that repairs are required (e.g. Customer Advisory Form). 2. In order to have damaged customer-owned equipment inspected by ESA, the LDC should also report the damaged customer service to ESA by notifying the ESA Customer Service Centre, so that an ESA Hazard Notification will be created. 10 POWERLINE SAFETY IN ONTARIO 10 5

18 LDC Cperforming LEC work UAC Patrick Falzon, Powerline Safety Specialist Powerline Safety Group Electrical Safety Authority October 5, 2017 Performing LEC Work Situation: New underground residential service to terminate to the existing overhead secondary bus Demarcation point- top of the service mast on the pole Home owner performed their own electrical work- permitted to do so with an application for inspection Customer owned underground secondary was installed from the meter base to the pole as per service layout instruction Service layout also indicated to install a secondary riser on pole Hazard The homeowner accessed the pole with a ladder and a tree trimming bucket truck within approx 1m of the primary lines 2 UAC Oct

19 Performing LEC Work 3 UAC Oct Performing LEC Work 4 UAC Oct

20 Performing LEC Work This was identified to the LDC as creating an electrical hazard. LDC solution: Customer or Licensed Electrical Contractor (LEC) to coil the consumer service conductor at the base of the pole and supply the service mast along with weather head. LDC to install the service mast on the pole and along with the consumer service conductor and terminate after Connection Authorization is given. 5 UAC Oct Performing LEC Work Problem: Installing the service mast and running the consumer service conductor up the pole is work ahead of the demarcation point- Becomes a violation of Ont. Reg 570/05 Licensing of Electrical Contractor and Master Electricians Outcome: Create a Distributor Bulletin 6 UAC Oct

21 Proposal for Awareness Campaign Darren Desrosiers October 2017 Public Awareness Clearances and encroachments to existing Distribution plant are not always considered in new developments Various sources for the problem including municipality building departments, Building codes In some cases, the customers build without consideration of any of the existing requirements ASK: Utility Advisory Council to recommend ESA to add a public awareness campaign to target Building Associations, contractors (like roofers) to look up and be aware of electrical hazards 2 1

22 New Builds 3 Poorly Placed Garages 4 2

23 Best Decks have great posts 5 Possible Sources Certain Municipal building departments only ask for pole locations, but not line orientations As building encroach on lines, unqualified workers enter the limits of approach putting themselves at risk Customers often build and sub-feed garages and other structures under lines Customers can also build structures using utility plants as support 6 3

24 Thank You 4

25 Proposal to Validate Technical Guidelines Darren Desrosiers October 2017

26 Technical Guidelines Most Technical Guidelines available on ESA website have publish date ranging from Serious Electrical Incidents updated 2017 Confusion over Guidelines role in compliance ASK: Utility Advisory Council to recommend to ESA that a set time frame (5 years) be a timeline to review, change or validate existing Technical Guidelines to ensure they are providing the correct basis for intrepretation of the guideline. 2

27 Thank You

28 30/11/2017 Illegally Connected Distributed Energy Resources (DER) Illegally Connected Distributed Energy Resources (DER) Residential installations seems to be where the problem lies Commercial customers involve the LDC and ESA 1

29 30/11/2017 Current Situation We have discovered three connections so far Two connections were on constrained feeders One of the connections did not use CSA equipment it was bought online The third connection was on a good feeder Residential Generation 101 Net Metering 2005 Green Energy Act 2009 microfit, FIT 2

30 30/11/2017 Residential Generation 101: Net Metering Residential Generation 101: microfit 3

31 30/11/2017 London Hydro s Process Reverse Alarm Detection London Hydro s Process ESA Hazard Report 4

32 30/11/2017 London Hydro s Process Customer Escalation Letter Process Going Forward Run the metering algorithm to catch illegal generation connections Request an ESA hazard report Have generation disconnected from system Work with customer if they are on a non-restricted feeder to get them connected through the proper channels If they are on a restricted feeder and they reconnect after they have been informed that they cannot, then we pull the load meter until the generation source is disconnected 5

33 30/11/2017 Safety Concerns Potential backfeed onto isolated grid creating risk of electrocution for workers Potential fire risk in home due to lack of ESA inspection (also insurance risk to home owner and Fire Department uninformed) Potential power quality issues due to unauthorized equipment use Absence of accessible disconnection switch for emergency purposes Possible generation onto a constrained feeder causing equipment ratings to be exceeded Structural analysis has probably not been performed for rooftop units Possible Future Concerns IESO Peaks Everyone is looking at ways to lower their hydro bills Commercial customers want to use their back up generation to lower their demand during the IESO five yearly peaks Reverse power detection won t work in this case Is this going to create problems? Will they contact us? 6

34 30/11/2017 What are other LDCs Doing? What can be done to get the message out? What are other utilities best practices? 7

35 Consistency issues Connection Authorization when Operating in parallel with the utility Question: When parallel generation such as a Net metering or load displacement is connected in parallel with the utility, is a connection authorization ti required? 1 All Staff Fall 2016 Consistency issues Connection Authorization when operating in parallel with the utility Answer: Yes. The C/A informs the LDC. 2 All Staff Fall

36 Meter Fires in Saskatchewan (Wire Pulling) Utility Advisory Council October 5, 2017 Meter Fires (Wiring Pulling) In July a series of fires occurred in Saskatchewan due to underground secondary wires separating from the meter base due to ground movements. In mid-august 2017, ESA informed the UAC that the topic would be discussed at the October meeting and please come prepared to discuss. In mid-september, ESA became informed of CEATI s work with SaskPower regarding the same issue. 2 1

37 Meter Fires (Wiring Pulling) ESA is seeking this council s advice and information with regards to this topic. Note: ESA has not received voluntary reports of meter base fires reported due to secondary wires being pulled down. How often does this occur in Ontario? Would the UAC advise / support working with CEATI in regards to this issue. 3 Meter Fires (Wiring Pulling) The CEATI / SaskPower work consisted of a survey sent to Electrical Distributors requesting specific information on the topic. CEATI requested responses back by September 7 th. ESA informed CEATI of ESA s interest in this topic and explored the idea of working together. CEATI reported that 1 LDC in Ontario responded to the request for Information Exchange. 4 2

38 5 6 3

39 Meter Fires (Wiring Pulling) Would the UAC support ESA in Reissuing the CEATI survey to Ontario LDCs and collecting the data (to be shared with Ontario and CEATI) ESA encouraging the LDCs in Ontario to complete the CEATI survey? Thoughts? 7 4

40 Serious Electrical Incident Reporting Guideline revision Utility Advisory Council October 5, 2017 Purpose The purpose for revising the guideline was to incorporate the amendments to the Regulation. The amendments came into force October 1, 2017 and included changes to section 12, which will be reviewed in more detail in this presentation, and updates to the national standards referenced in sections 5 and

41 Agenda 1. Review the changes to the Regulation. 2. Review the changes to the Guideline. 3 Regulation change Section 12(3.1) (3.1) Upon request of the Authority, the distributor or any contractor or operator acting on the distributor s behalf shall assist in an investigation under Part VIII of the Act into a serious electrical incident that involved the distributor s assets. O. Reg. 220/17, s. 3 (2). Guideline s ESA may request information, and in some cases assistance, with the review of an incident reported to ESA. ESA deems assistance to include providing ESA with information that is available to the distributor, or any contractor or operator acting on the distributor s behalf. ESA also deems that clause 12(3.1) of the Regulation only applies to the distributor s assets. 4 2

42 Regulation change Serious electrical incident definition: a) any electrical contact that caused death or critical injury to a person, b) any inadvertent contact with any part of a distribution system operating at 750 volts or above or with a meter, if the contact caused or had the potential to cause death or critical injury to a person, but not if the contact was caused by force majeure, or c) any fire or explosion in any part of a distribution system operating at 750 volts or above or in a meter, if the fire or explosion, as the case may be, caused or had the potential to cause death or critical injury to a person, but not if it was caused by force majeure; Regulation 22/04, s.12(4)] 5 Regulation change Section 12 - New and changed defined terms: force majeure includes acts of God, lightning strikes, weather, floods, natural catastrophes, civil commotions, sabotages, riots, invasion, insurrection, acts of terrorism, but does not include labour strikes, fires or explosions; meter means any apparatus used for the purpose of making measurements of, or obtaining the basis of a charge for, electricity supplied to a purchaser; worker means a person who performs work or supplies services for monetary compensation but does not include an inmate of a correctional institution or like institution or facility who participates inside the institution or facility in a work project or rehabilitation program. worker means a worker as defined in section 1 of the Occupational Health and Safety Act 6 3

43 Guideline Section When must incidents be reported to ESA? Original Serious electrical incidents must be reported within 48 real hours of the LDC becoming aware of the incident. Revision Serious electrical incidents must be reported within 48 real hours of the LDC becoming aware of the incident. The 48 hour reporting window is deemed to begin when the LDC realizes that t the incident id was a serious electrical l incident. id (e.g. it is discovered that a house fire that occurred due to the improper meter function, but this was only determined one week later, after removing the meter remains and examining it). 7 Guideline Section What is the precautionary principle? The principle implies that there is a social responsibility to protect the public from exposure to harm, when scientific investigation has found a plausible risk. These protections can be relaxed only if further scientific findings emerge that provide sound evidence that no harm will result. 8 4

44 Guideline Section What types of incidents involving a meter need to be reported? Any inadvertent contact with a meter that caused or had the potential to cause death or critical injury is reportable to ESA. This is not expected to be a common occurrence, even when applying the precautionary principle. LDCs are expected to assess an incident and determine if the incident is mandatory reportable (i.e. determine if the potential for death or critical injury existed). 9 Guideline Section What types of incidents involving a meter need to be reported? Any occurrence of a fire or explosion in a meter that caused or had the potential to cause death or critical injury is reportable to ESA. In the case of fire or explosion, applying the precautionary principle may require determining the potential to cause death or critical injury and includes an assessment of whether the equipment failed in a safe manner. For example, if arcing occurs inside the meter, did the meter s enclosure prevent a fire from escaping the enclosure? During ESA s review of an incident, if the cause of the fire or explosion cannot be determined, the incident will be deemed a voluntary report by ESA. 10 5

45 Guideline Section Is a death or critical injury from electrical contact that occurs as a result of force majeure a mandatory reportable incident? Yes, it is mandatory reportable. Part (a) of the Serious Electrical Incident definition states any electrical contact that caused death or critical injury to a person, therefore any death or critical injury that occurs as a result of electrical contact with the distribution system is mandatory to report, regardless of the circumstances. Force majeure is not intended to exempt the reporting of all incidents. It is intended to provide relief from reporting incidents of non-harmful electrical contacts, inadvertent contacts, fires or explosions. As a result, this provides reporting relief to LDC s to redirect their resources where they are best focused on repairing the distribution system. 11 Guideline Section What types of weather are deemed to be force majeure? ESA deems the term weather in the force majeure definition to mean extreme weather events. Extreme weather events include unexpected, unusual, unpredictable, or severe weather. Such events disrupt normal business operations and occur so infrequently that it would be uneconomical to take them into account when designing and operating the distribution system. 12 6

46 Guideline Section What types of incidents caused by force majeure do not need to be reported? Any inadvertent contact, fire or explosion in a distribution system operating at 750 volts or above that occurs as a result of a force majeure event does not need to be reported. for example: - A tree or tree branch falls due to ice build-up and causes an overhead line to fall to the ground or hang lower beyond the acceptable CSA clearances. - A natural catastrophe (e.g. forest fire, severe river flooding) causes part of a pole line to collapse LDCs are expected to make a reasoned decision for not reporting a serious electrical incident under these circumstances and provide that rational to ESA upon request. Failure to provide this information may result in the LDC being found not compliant with section Reporting Form A new question has been added to the form. Should ESA consider this to be a voluntary report? ** (Please provide details in Section D as to why it should be considered voluntary) Was there an electrical contact that caused death or critical injury to a person? Yes No Was there an inadvertent contact with any part of a distribution system operating at 750 volts or above that caused or had the potential to cause death or critical injury to a person? Was there a fire or explosion in any part of a distribution system operating at 750 volts or above that caused or had the potential to cause death or critical injury to a person, except a fire or explosion caused by lightning strike? Was the electrical equipment owned by the licensed distributor? (If not please provide more information in Section D) Was the incident a result of an inadvertent contact with a meter, or fire or explosion in a meter? 14 7

47 15 Appendix B #15 a) Arcing in a meter causes a fire which subsequently causes the siding on a house to catch fire. REPORTABLE b) After a meter was removed from service, arcing is discovered in the meter. The LDC determined that the arcing was completely contained within the chamber. NOT REPORTABLE c) A fire in the electrical panel of a house causes the house to burn down, destroying the meter. NOT REPORTABLE d) Damaged meter-base jaws caused a high resistance connection resulting in the failure of the meter. NOT REPORTABLE e) A fire occurs in the vicinity of the meter. After examining the meter, it cannot be determined if the fire started in the meter or meter-base. Recommend to Report a) The fire in the meter caused a fire that had the potential to cause death or critical injury. (See Guideline s.2.3.5) b) The arcing did not generate a fire or explosion nor was there a probability of either occurring. This type of incident is encouraged to be reported to ESA as a voluntary report. (See Guideline s.2.3.5) c) The fire did not originate in the meter or the distribution system operating above 750V. (See Guideline s.2.3.8) d) There was no fire or explosion originating in the meter or in the distribution system. (See Guideline s.2.3.8) e) Since it cannot be determined conclusively where the fire started, ESA recommends that the incident be reported as voluntary.(see Guideline s ) Questions? 16 8

48 UAC Endorsement ESA is seeking the Utility Advisory Council members endorsement of the guideline for publication and for use by the LDC industry. Will a member please make a motion for a vote? 17 9

49 LDCs Reporting in Code Side Safety Concerns Jason Hrycyshyn, P.Eng Utility Advisory Council October 5, 2017 The Request LDCs requested additional communications when they report into ESA Code Side Safety Concerns LDCs requested: 1. Confirmation be provided that their concerns were received by ESA; and 2. To be informed when the issue had been resolved Powerline Safety Week - May

50 The Actions After consultations with our Legal Department ESA was able to create the following system to satisfy the request for additional communications. 1. LDCs will now receive system generated, confirmation s that a notification to investigate has been created within ESA. 2. LDCs will now receive system generated, notice s that the notification has been closed by ESA. 3. s: Will go to the same inbox as the Connection Authorizations Powerline Safety Week - May Note : The screen capture system truncated some of the information, however it will exist in full. 2