Capturing Demand-Side Storage that Already Exists in the Power
System
Wind Integration through Intelligent Load ManagementRon Dizy,
President & CEO ENBALA Power NetworksThe information contained
in this presentation is for the exclusive and confidential use of
the recipient. Any other distribution, use, reproduction or
alteration of the information contained in this presentation, by
the addressee or by any other recipient, without the prior written
consent of ENBALA Power Networks Inc. is strictly prohibited.The
Power System Needs Real-time FlexibilityContinuous deliveryof
electricityAbility to meetpeak requirementAbility to
continuallymatch supply & demand (& manage
intermittentgeneration)
ENERGY
CAPACITY
FLEXIBILITY
#There are three key pillars for the power system:
First we need to supply energy -- electrons in wires -- and we
need enough to meet the demands of the users in the power
system.
Second we need capacity -- the ability to supply enough power in
the middle of the hottest day of the year. This is manifested in
having enough power plants and enough distribution to satisfy the
highest demand in the year - and this receives a lot of attention
from both the grid operator and the public.
But we also need flexiiblity. Because electricity cannot be
stored , supply and demand must be precisely balanced in very near
real time. This is an increasing challenge in the power system,
because at the same time that we are retiring some of our older,
less green generation (like coal), we are adding intermittent, new
generation. This adds to the volatility in the power system - and
this increases the need for flexibility in the power system.
Adequate supply of flexiibiltiy is crucial to the reliable and cost
effective management of the power system. 2
Volatility maintaining system balanceRamp losing wind at
inconvenient times (during ramp)Capacity different form of
generationWhat is Wind Integration Complex ProblemVolatility and
Ramp can be solved using Demand Management
Technologies.VolatilityRampCapacity#
Wind IntegrationWhat are Markets Doing?
Grid Balance
26 GW FlexibilityWind IntegrationGrid Balance
Load shifting and Supply & Demand Optimization
CAISO also looking at ramp products.BPA has over 4,500 MW of
wind connected.#ENBALA has been busy since last August. We have
been working through PJMs stakeholdering process to implement
necessary rules changes in the areas of allowing multiple CSPs for
a client, allowing submetering and simplifying load aggregation.
FERC has been supporting those rules changes. We have been
delivering commercial, live regulation since November 2011. ENBALAs
platform was also selected by Powershift (a consortium of three
Atlantic Canadian provinces utilites) to provide real time load
management services to help integrate high levels of wind much more
effecitively into their power system. ENBALA has been engaged by
Oak Ridge National Labs to characterize how much load can provide
valuable flexibility services to the grid. This information has
been requested by the DoE as they consider a program to encourage
load participation much more deeply in the power system. We have
also been working with the IESO in Ontario on rules changes and are
now awaiting an imminent RFP for non-generation Regulation
Services. ENBALA is working with both ERCOT and NYISO on upcoming
rules changes to support the use of aggregated loads to supply
Regulation and other ancillary services to the grid. 4
Customers Connecting to the GridHighly secure communication
interface installedThe network supplies reliable storage to the
power system and pays your site for its flexibilityReal-time
optimization platform that understands process constraintsENBALA
engineers help you "define your sites flexibility and
constraints
#Enter the ENBALA Power Network.
We connect to a network of loads, receiving real time
information as to their health, status and flexibility. The ENBALA
Power Network has a very sophisticated optimization platform at its
core.
Every few seconds, it receives a new signal from the power
system operator -- to consume a little more, or a little less power
-- and, based on the real time status of the participants in the
networks, determines the best way to satisfy the needs of the power
system (without impacting the operational effectiveness of any
load)
This platform is capable of providing reliable, robust and
resilient balancing services to the grid (on a 4 second time scale)
....
The key elements of the solution includeNear real time
communication, supporting fast bi-drectional response from the
loads (both increasing and decreasing consumption)The skills to
understand and capture flexibility inherent in how loads consume
powersA sophisticated optimization platform that preserves each
individual loads operational effectivenessThe network -- there is
power in the network5Capturing Process Storage that Already
Exists
Water Distribution FacilityCommercial BuildingRefrigerated
WarehouseWastewater TreatmentStorage already exists in the power
systemStorage in industrial systems and processes provides
flexibility in consumptionWe only have to connect and manage this
storage#6
The individual responses from each asset in the network are
aggregated to form the network response Network Response Using
Heterogeneous Load Types#
Traditional Approach to Wind Integration21Fossil fuel generator
running at a low level, ready to provide back-up generation for
intermittent windFossil fuel generator ramps up quickly to generate
energy as the wind power falls off
12#Wind is viewed as an attractive, carbon free source of
electricity that is cost effective, relative to most other forms of
renewable generation. But it is intermittent and must be backed up
by other forms of energy. Utilities recognize the need to provide a
backup supply for sudden variations in power output.
Todays approach involves keeping some fossil fuel plants
operating at minimum levels, ready to provide generation if the
wind plants stop producing.
Obviously, this creates inefficiencies in the power system --
and at least partially, defeats the purpose of introducing the wind
in the first place. 8
Much Better Approach to Integrating WindThe continuously
connected network of demand-side loads offset the decline of wind
power while the fossil fuel generator prepares to come onlineLoads
give the generation fleet time to efficiently turn on and begin
ramping up to provide generation as wind falls offLoads are
recharged back to their neutral point and continue to provide
balance to the generation mix.
123123#A different approach is to think of the challenge of
integrating wind as two distinct components:There is a requirement
for flexibility -- to handle the moment by moment variations in the
amount of wind power produced and to handle the ramp (when wind is
either coming online or going offline).And there is a requirement
for capacity to handle the absence of wind over longer periods
(over several hours).
The reality is that loads can provide the flexibility required
to balance intermittent wind. Load management can make the
integration of renewable generation much simpler. Conventional
generation must still play a role in the process since loads are
not suitable for providing the energy capacity during periods of
low wind.
By engaging customers to handle the flexibility portion of the
wind integration requirement, generators can be sitting idle, and
only need to be brought online when there is a need for their
capacity.
As wind power decreases, loads can be reduced for several
minutes, giving the backup generator enough time to start up and
ramp up its power output. This eliminates the need to have the
generator constantly operating at minimum power and low efficiency.
Similarly, during sunrise and sunset, loads can be increased or
decreased for several minutes to fill in the gap between the
generator ramping constraint and the net load ramp.
9BenefitsEngagement of consumers to participate in the power
systemReliable integration of wind generationReduction of
greenhouse gas emissions
ChallengeMeeting the provinces objective to reliably integrate
wind generation into the power system.
SolutionIntegration of wind power through intelligent load
management. New Brunswick Power
#Thank YouFor further information, please contact:
Ron Dizy, President & CEOENBALA Power Networks
Tel:416.419.6393Email:[email protected]
URL:www.enbala.com
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