Electricity Distribution Code Review Technical Standards Draft - - PowerPoint PPT Presentation

Electricity Distribution Code Review – Technical Standards

Draft decision briefing 16 Dec 2019 and 13 Jan 2020

Welcome

Aaron Yuen Senior Regulatory Manager, Energy Reform and Analysis

Today’s agenda

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Time Item 3:30 PM Welcome and introductions 3:35 PM Today’s purpose and the Electricity Distribution Code 3:40 PM Draft decision presentation 4:05 PM Q & A 4:25 PM Next steps 4:30 PM Close

Today’s purpose

• Provide an overview on our draft decision
• Project status and next steps
• Stakeholder Q & A on our draft decision

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Status of the code review

Review launch Dec 2018 Approach paper April 2019 Issues paper Aug 2019 Draft Decision Dec 2019 Consultation Close Jan 2020 Final Decision Mar 2020

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Technical standards stream

Draft Decision Mar 2020 Final Decision May 2020

Customer service standards stream Current stage

• f review

Wider review (2020 onward)

Electricity Distribution Code

Customer protections Information and processes

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The Electricity Distribution Code (EDC) is…

Technical standards

Electricity Distribution Code – Where it applies

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Generation Transmission Industrial users Distribution Retail Domestic users and businesses Electricity Distribution Code

Speaker

Steve Oh Senior Analyst

Voltage standard – Proposed changes

• Introduce flexible voltage standard (AS 61000.3.100) for the low

voltage distribution system

• Maintain the existing customer protection framework with revised
• parameters. This continues the code’s interaction with our

Guideline 11 (Voltage variation compensation)

• Introduce new information reporting requirements for distributors

to improve transparency and leverage smart meter technology

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Voltage standard - Concept

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Solar customer

Distance

EDC voltage limits

230V +10%

• 6%

Voltage profile of supply

Voltage standard - Current

11 Supply point

Solar Customer Time Voltage (V) 230 253 216 +14% +10%

• 6%
• 10%

+50%

• 100%

Code operating limits where compensation could apply

Voltage standard – Proposed change & customer protection

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Voltage (V) Time 230 253 216

• 10%

+14% +10%

• 6%

+50%

• 100%

Electricity Distribution Code (Current)

Voltage (V) 230 253 216 V1% = 216V (- 6%) V99% = 253V (+10%)

Australian Standard (AS 61000.3.100) - Proposed

Frequency of network experiencing different voltages levels AS 61000.3.100 target range 260V (+13%) 207V (-10%)

• 100%

+ 50% Customer protection upper threshold (Guideline 11) Customer protection lower threshold (Guideline 11)

Code operating limits where compensation could apply

Voltage standard – Current

13 Supply point

Solar Customer Time Voltage (V) 230 253 216 +14% +10%

• 6%
• 10%

+50%

• 100%

Voltage standard – Proposed (Flexible)

14 Supply point

Solar Customer Voltage (V) 230 V1% = 216V (- 6%) V99% = 253V (+10%)

Australian Standard (AS 61000.3.100)

Frequency of network experiencing different voltages levels AS 61000.3.100 target range +50% 260V (+13%)

• 100%

207V (-10%) Customer protection region Customer protection region

Voltage standard – New reporting requirements

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Distributor Zone substation

100 200

12 AM12 AM12 AM12 AM

Voltage Time

3 months aggregate voltage information for the section

Shortest Feeder

Section 2 Section 1 Section information

Other technical standards – Proposed updates

We propose updating legacy standards and referenced documents to reflect current standards or industry practices. Some of these are:

• Over voltage control (managing low voltage disturbances)
• Powerline signals (using the power line as a communication

medium to transmit signals)

• Referencing latest safety regulations

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Other technical standards – Proposed harmonisation

We propose aligning some standards with the National Electricity Rules or other jurisdictional approaches, where appropriate. Some

• f these are:
• Power factor (the effective use of electricity)
• Negative sequence (the allowable level of system imbalance)
• National register of Distributed Energy Resources

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Technical standards not being amended

We propose not to change a small number of technical provisions. Some of these are:

• Supply frequency standards
• Load balance
• Impulse voltage

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Other general updates

We proposed a range of other general updates to reflect current legislation, regulations, referenced documents and definitions. Some of these are:

• Updating various AER definitions with current references
• Updating AEMO documents with current references
• Other small updates

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Next steps

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Draft Decision 3 Dec 2019 Consultation Close 20 Jan 2020 Final Decision Mar 2020

Make your submissions to ‘Engage Victoria’ by 20 January 2020

Technical standards stream

Questions / Activity

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Questions / Activity

• 1. Spend 5 minutes to write down the questions you

may have regarding the draft decision

• 2. Spend another 5 minutes to discuss with your table

peers and write down the top two questions the table wish to pose for the draft decision Q & A

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Continue the conversation

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www.esc.vic.gov.au /company/essential-services-commission @EssentialVic www.engage.vic.gov.au EDC Review Email edc.review@esc.vic.gov.au

Thank you

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