IEEE Power & Energy Magazine - May/June 2017 - 39

may/june 2017

Allow the Proper Allocation of
Costs (Infrastructure and Systems)
Among the Agents
Asset
Management

Adapt DSO Cost Recovery/
Remuneration Framework to
Foster Innovation
Network
Planning

figure 7. The IGREENGrid strategy for DRES integration.

Assess the Suitability of a
Replacement Compared to
Smart Grid Solutions

Harmonized
Connection Rules
Voltage and Load
Monitoring (MV and LV)
Advanced Planning Including New
Operation Concepts and Tools
Network
Operation

Increase the Energy
Efficiency

Demand
Generation
Generatio
ttii n

Losses
Fraud

Time/Distance

Voltage Profile
Harmonized
Operation Data
Format for Exchange
Curtailment of
DRES
Control of DRES' Use of Devices for
Reactive Power
Voltage Control
Improve the
Observability of the
Distribution Network
Interface DSO/
Customer-DRES

Prosumer
Side

Improve the Quality of
Supply

Time
Increase the HC

5 PG((tt )
4 PG(t ) Violated
Constraint
3 PG(t ) Constraints
2 PG(t )
1 PG(t )
Development of
Cheap Storage
EV-Charging Optimization
by DSO/TSO
Inverters Providing
Reactive Power at Any Time

To encourage smooth progress, the
most feasible controls should be
used in the short term to benefit
from the most practical approaches
while allowing for further analysis
and regulatory changes. To promote and accelerate DRES integration, several actions should be
considered by prosumers (consumers that also produce electricity),
network operators, network planners, asset managers, and regulators (Figure 7).
In many cases, the connection
of additional generators requires
network reinforcements, which
can be costly and time-consuming.
Two key constraints are the transformer capacity at a primary substation connected to a significant
amount of generation and the current or voltage limits on an existing feeder. In some cases, network
reinforcement is only necessary for
a short duration (few tens of hours
per year), which poses the question
of the meaningfulness of such reinforcements. An alternative could
be using nonfirm connection contracts. The DSO would tolerate the

Nonfirm Connection
Contracts

Strategy

BN 50160

a configuration for loss reduction
as a secondary objective) while
also reducing quality of service
(voltage closer to the limits). Other
SG solutions such as AVRs increased losses by about 10% in
the simulations.
Sometimes the complexity of a
solution is derived from the type
or number of agents involved. An
OLTC or an OPF can be implemented by a DSO on its own, with
cost as the main impediment. The
automatic reactive regulation of
DG, however, requires permissions or agreements with producers, which complicates large-scale
implementation. In general, prioritizing simple but efficient solutions will accelerate the evolution
toward the new SG and will help
convince more traditional decision makers.

ieee power & energy magazine

39



Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - May/June 2017

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