ROB STEPHEN

PLENARY 1 – GRID MODERNISATION

PRESIDENT CIGRE

CIGRE/ESKOM

GRID MODERNISATION TEN POINTS

ROB

STEPHEN

• The purpose of modern power systems is to

supply electric energy satisfaying the following

conflicting requirements:

High reliability and security of supply

Most economic solution

Best environmental protection

MODERN GRID PURPOSE

Rob Stephen

SUSTAINABLE ELECTRICITY FOR ALL

• Policies for lower carbon, renewable energy sources (RES), efficient energy use

• Integration of RES and distributed generation (DG) into the grids

• Increased customer participation and new needs for distribution grids

• Progress in technology including ICT

• End-of-life grid renewal (ageing assets)

• Methods to connect remote areas with no electricity

• Market design and regulatory mechanisms for an equitable, cost-effective transformation

• Environmental compliance and sustainability

CHALLENGES

SUSTAINABLE ELECTRICITY FOR ALL

Rob Stephen

STUDY COMMITTEES

EQUIPMENT

NEW MATERIA

LS & IT

SYSTEMSTECHNOLOGIES

A1

A3 A2

B1

B4 B5

B2

B3C6

C1

C3

C5

C2

C4

D1

D2

16 STUDY

COMMITTEES

Rob Stephen

SUSTAINABLE ELECTRICITY FOR ALL

SUSTAINABLE ELECTRICITY FOR ALL

Key Cigré work on:

Distribution level needs more “smartness”

Massive penetration of smaller units imposes

the need for their control and coordination

Smart metering massive implementation

Evolution of markets and regulation

Novel distribution network architectures

Microgrids and Virtual Power Plants

Solutions for remote micro grid connections

Connection of remote areas with no access

to electricity

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1ACTIVE DISTRIBUTION NETWORKS

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Rob Stephen

Key Cigré work on:

New architecture of the whole system for

system operation, protection…

What data must be exchanged and with

what kind of requirements (volume,

frequency, avaibility, security, etc.)

Big Data

In addition:

Disaster recovery and restoration plans

Cyber security and access control

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2MASSIVE EXCHANGE

SUSTAINABLE ELECTRICITY FOR ALL

Rob Stephen

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Key Cigré work on:

HVDC and Power electronics (PE) may

create harmonic distortion managed with

ac and dc harmonic filtering

Fault behaviour

Network performance needs to be carefully

studied, with appropriate models of the

HVDC and PE systems

HVDC Grids LV DC grids

The penetration of power electronics at

medium and low voltage levels

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3INTEGRATION OF HV/LVDC / PE

SUSTAINABLE ELECTRICITY FOR ALL

Rob Stephen

Key Cigré work on:

Modeling for steady state and dynamic

simulations.

Management for storage

Sizing of storage devices

Co-operation with RES for hybrid systems

Management in autonomous power systems

Ability to reduce peaks

Co-operation with DSM

Frequency control, synthetic inertia

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4LARGE INSTALLATION OF STORAGE

SUSTAINABLE ELECTRICITY FOR ALL

Rob Stephen

Key Cigré work on:

• Power balancing, congestion and risk management • New software to quickly determine system status

over wide areas automated configuration adjustment, automated service restoration

• Inertia, rate of change of frequency.• Adapt training of system operators.

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5NEW SYSTEMS OPERATIONS

SUSTAINABLE ELECTRICITY FOR ALL

Rob Stephen

Key Cigré work on:

New Wide area Protection systems

Impact on the protection system of new generation

technologies (decreasing short circuit power)

Capabilities for Fault Ride Trough

Coordination between protection and new

generators capabilities

Inadvertent Islanding detection

Intentional islanded operation

Rapid under frequency operation

Data management and architecture of the future

Metering as information collectors for distribution

networks automation, home energy management

and EVs

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6PROTECTION

SUSTAINABLE ELECTRICITY FOR ALL

Rob Stephen

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Key Cigré work on:

Risk-based planning to manage uncertainties

and changes in nature of supply and demand

and role of the power system

Interaction of transmission and distribution

expansion investment needs, to plan best for

demand response, distributed generation

Understand cost, capabilities and lead times

of each new technology

Keep learning about pros, cons and

combinations of central planning vs. market

solutions under changing market and

regulatory environments

Single phase analysis, integration of

microgrids, load and voltage determination.

Integration of HVDC Grids and AC Networks

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7PLANNING

SUSTAINABLE ELECTRICITY FOR ALL

Rob Stephen

Key Cigré work on:

Advanced numerical techniques and numerical

methods for the solution of multiphase load-flow

problems, steady-state initialization of network

studies and time-domain simulation

Bridging the gap between 3-phase and positive

sequence modeling – single phase

GIS based tools

Advanced tools and techniques for power

balancing and reserve requirement evaluation

Operational tools allowing a probabilistic and risk-

based planning

New tools for development and operation of active

networks, especially their dynamic behavior,

islanding and power quality effects

Models for assessing the interaction between the

ac system and HVDC converter stations, HVDC

Grids and for FACTS devices

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8NEW TOOLS

SUSTAINABLE ELECTRICITY FOR ALL

Rob Stephen

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Key Cigré work on:

Which technologies can be used for uprating

existing lines: probabilistic ratings, real time

ratings, high temperature conductors

Convert AC to DC lines

Develop new insulated AC or DC submarine

and underground cables for offshore wind

farms

Investigate the ability of all components to

withstand transients and over voltages

Increased use of interconnections and their

implications on planning, operation & control

and the establishment of electricity markets

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9INCREASED USE OF EXISTING LINES

SUSTAINABLE ELECTRICITY FOR ALL

Rob Stephen

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Key Cigré work on:

In the planning phase:

To demonstrate the usefulness and the benefits

given by the network

To guarantee that Sustainable Development

principles and issues are being incorporated since

this stage

To take into account public views and needs

already in the design steps (e.g. the choice of

alternatives)

Community involvement

In the construction and operation phases:

To demonstrate the compliance with environmental

standards, to obtain a support to the necessary

actions (e.g. maintenance,…)

Community involvement

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STAKEHOLDER AWARENESS 10

SUSTAINABLE ELECTRICITY FOR ALL

Rob Stephen

“THANK YOU”

Error!Error!Low density, high cost, low demand, no address, pre paid meters.

House cannot support Connection, house may move, long distance to repair faults

SUSTAINABLE ELECTRICITY FOR ALL

SUSTAINABLE ELECTRICITY FOR ALL

Rob Stephen

“THANK YOU”

Rob Stephen

SUSTAINABLE ELECTRICITY FOR ALL