Power Plant Controller for ConextTM Advisor 2
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Your best companion for Grid Code compliance Solution at a glance Fully integrated in Conext™ Advisor 2 (CA2) the Power Plant Controller (PPC) is designed, provided and implemented by Schneider Electric Solar Business. The PPC is a dynamic system that commands SmartGen inverters and other compensation devices to fulfill the Grid Code and any Grid Utility requirements regarding active and reactive power control. The PPC is designed to get a fast and accurate response at the Point of Connection of the PV plant, and notably for the large Utility-scale PV plants, from few MW to hundreds of MW. The PPC offers the following functions: • Embedded reactive power operating modes • Embedded active power operating modes In hybrid power networks, the PPC controls the generating resources to maximize the economical/ profitable power source while ensuring load stability. Power Plant Controller for Conext TM Advisor 2 Extend Conext TM Advisor 2 features, adding PPC in your monitoring solution.
Transcript of Power Plant Controller for ConextTM Advisor 2
Your best companion for Grid Code compliance
Solution at a glance
Fully integrated in Conext™ Advisor 2 (CA2) the Power Plant Controller (PPC) is designed, provided and implemented by Schneider Electric Solar Business.
The PPC is a dynamic system that commands SmartGen inverters and other compensation devices to fulfill the Grid Code and any Grid Utility requirements regarding active and reactive power control.
The PPC is designed to get a fast and accurate response at the Point of Connection of the PV plant, and notably for the large Utility-scale PV plants, from few MW to hundreds of MW.
The PPC offers the following functions:• Embedded reactive power operating modes• Embedded active power operating modes
In hybrid power networks, the PPC controls the generating resources to maximize the economical/profitable power source while ensuring load stability.
Power Plant Controller for ConextTM Advisor 2
Extend ConextTM
Advisor 2 features, adding PPC in your
monitoring solution.
solar.schneider-electric.com | 2
Introducing Power Plant ControllerPower Plant Controller
Key features
Architecture
PERFORMANCE SCALABILITY ROBUSTNESS & GRID STABILITY
Grid Code compliance at Point Of
Interconnection
Fast and accurate responses
Strong robustness under any
scenario
Modular solution for fast and easy
adaptation to grid code worldwide
Compatibility with advanced
applications:
Hybrid plant (PV + Energy storage)
Pure energy storage plant
Energy management system
Fault Ride Through (LVRT / HVRT)
management
Loss of communication / Fallback
management
Ensures a high level of performance
and maximizes the revenue of your plant
Designed to be customized for
every plant around the world
Considers unexpected conditions on the
Grid or in the Plant to improve its integration
PPC system is based on: PLC Controller (Modicon M580)
in charge of the management of all control loops
ConextTM Advisor 2 Interface for monitoring and control
Power Meter connected at the Point of Connection of the PV plant or HV substation
Embedded power control loopsPower Plant Controller
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Reactive power operating modes
Voltage control Power factor control
Constant reactive power control
Active power operating modes
Active power curtailment Frequency control
For several reasons, like overload of the lines, excess of intermittent energy production, the Grid Utility may request to curtail the production. This kind of feature is presented in below figure. Active power curtailment can be applied with or without ramp rate control.
During an over-frequency event the PPC can quickly decrease the active power injection at POC proportionally to the frequency deviation.
Several control loops are implemented into the PPC to reach an accurate control of the power
and the voltage at the Point of Connection (POC) of the PV plant.
Maintains the grid voltage to the reference voltage at the POC by suppling or absorbing reactive power. The voltage control can be set without any droop or with a droop (between 0% and 10%).
Maintains a fix reactive power exchange at the POC, whatever the grid voltage and the PV plant production.
Maintains a constant Power Factor at the POC, whatever the grid voltage or the losses in the transformers of the PV plant.
U set point
Capacitive Q limit
Inductive Q limit
Del
ta U
min
Del
ta U
max
Capacitive droop
Inductive droop
Voltage deadband
Q
U
Q
P
Q
P
During an under-frequency event and when an active power limitation is in progress the PPC for PV plant can partially or fully release the active power limitation in order to participate to grid stability.
Potential PV production
Power snapshot at begin of frequency eventActual power injected at POCFrequency
P
t
tf
No freq. support
P limit start P limit stop
Potential PV production
P limit set pointActual power injected at POC
P
t
Two versions of PPCPower Plant Controller
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© 2018 Schneider Electric. All Rights Reserved. True Design for Service trademarks are owned by Schneider Electric Industries SAS or its affiliated companies. Ethernet/IP is a registered trademark of Odva, Inc. Specifications are subject to change without notice.
Designed for regular PV plants. It provides the basic control loop functions mentioned above. These functions can be set with the predefined parameters to meet the Grid Utility requirements of most PV plant projects.
Designed for large PV plants, challenging Grid Codes, or customer requests. It provides the basic control loop functions, and on request additional or more advanced functions depending of the PV plant specific needs.
PPC Universal PPC Evolution
PPC universal is integrated in the Gridbox main controller of ConextTM Advisor 2, therefore no additional controller is required.
To improve the response time of the PPC, the hardware and software architecture of the PPC Evolution includes an additional controller located in CA2 grid cabinet.
PPC Universal PPC Evolution
Functionalities
Total response time 2-5 s <1 s
Rea
ctiv
e P
ower
Con
trol
Reactive Power limitation
Power Factor
Reactive Power
Voltage Control
Capa bank, shunt reactor, STATCOM control -
Overnight reactive power or voltage control -
Act
ive
Pow
er
Con
trto
l PV
Pla
nt
Active Power LimitationOpen loop Close loop
Over Frequency -
Under Frequency -
Act
ive
Pow
er C
ontr
ol P
V +
E
SS
pla
nt/E
SS
pla
nt
Frequency support -
Power smoothing (ramp) -
SOC balancing for multiple storage system unit -
SOC Management -
Interface with an Energy Management System (EMS) -
Peak Power Shifting -
System
PLCEmbedded in the main controller
of the CA2 Grid MCCDedicated controller in the CA2 Grid MCC
Full integration in CA2 Cloud
Interface with inverters Modbus TCP/IPModbus TCP, 4-20 mA (through
Ethernet/IP distributed I/O)
Interface with Utility
Compatible power meter ION7650, ION8650, ION8800 ION7650, ION8650, ION8800 (7)
Additional Services
There are some additional services that can be requested on-demand to complete the PPC offer, as design of new control loops, energy management system development, advanced modelling and simulation with grid integration study (PSSE, PSCAD, PowerFactory).
To have more information, please contact us at [email protected]
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(1): Advanced control on request(2): Active Power reduction at POC(3): Release of active power limitation(4): Yes for over- and under-frequency
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(5): Modbus TCP ou Analog and Digital Input / Ouput(6): Modbus TCP, DNP3 TCP, DNP3 Serial, IEC60870-5-101, IEC60870-5-104, Analog and Digital input / output, customization on request(7): More on request
(5)(5) (6)
