500 kW SOLAR PLUS STORAGE INVERTER FOR MICROGRID APPLICATIONS
For 480VAC-class, grid-connected battery energy storage applications utilizing solar, Dynapower offers the SPS-500, a 500 kW solar plus storage inverter from the Solar Power Systems™ (SPS) family of utility grade, bi-directional, true four-quadrant, Digital Signal Processor (DSP) controlled inverter/converters. Dynapower’s flexible and highly modular SPS units optimize the transfer of energy between a DC energy storage system and a three-phase grid. The SPS-500 provides power conditioning (voltage and frequency support) for intermittent loads and renewable generation. Systems are available in indoor and outdoor configurations.
The SPS-500 integrates system cooling, controls and a full complement of switchgear and protection including an AC circuit breaker, AC contractors, AC & DC Fusing, DC load break contractors, and DC manual isolation switch into a single, heavy duty industrial enclosure. This offers end users and energy storage integrators a cost advantage when compared to non-integrated systems that require additional add-on items.
ENERGY STORAGE APPLICATIONS
- Parallel Operation in Grid Forming Mode
- Integrated AC Breaker with Shunt Trip
- Integrated DC Disconnect
- Integrated DC-Pre-Charge
- Integrated DC Input Fuses
- Cloud-based remote monitoring
Dynamic Transfer™ — Dynapower’s proprietary patent pending Dynamic Transfer™ algorithm monitors the grid stability and upon detecting a grid disturbance will disconnect from the grid connection and transition to stand-alone mode on the load connection. The transition is seamless to the critical loads and supports 100% phase imbalance in UF mode.
TWO MODES OF OPERATION
The SPS-500 provides two modes of operation — Grid-Tied (PQ-mode) and Stand-Alone (UF mode). In the Grid-Tied mode, the SPS-500 controls the AC output real power (P) and reactive power (Q). In Stand-Alone mode, it controls the AC output voltage (U) and frequency (F). The system can be started in either mode and the transfer between modes is done dynamically. Advanced controls schemes for multi-unit and microgrid applications are available.
Dynapower’s state of the art control and monitoring platform provides operators with both local and remote operation of the system. In the remote operating mode, a communication link provides autonomous operator control via Ethernet, RS232, or RS485. For local control, Dynapower provides an Operator Interface Terminal (OIT) for error set commands and full system display status.
COMPREHENSIVE SYSTEM MONITORING
The SPS-500 provides full system status information including AC output real & reactive power, AC output voltage & frequency and DC battery voltage and DC current readings to the remote operator through feedback signals or through the communication link (via an RTU or PLC). It has an on-board monitoring system with error history and grid fault data capture. System operating information is displayed on the OIT in both local and remote modes of operation.
AC Over Voltage, AC Under Voltage, AC Under Frequency, AC Over Frequency, AC Overload, Over-tempature, DC Over Voltage, DC Over Current, Ground Fault
IEEE 1547, UL 1741, UL Listing
Anti-islanding with UL compliant trip points
DC Voltage, PV
690 – 1000 VDC
Max DC Current, PV
DC Current, Battery
690 – 1000 VDC
DC Current, Battery
AC Line Voltage
480 VAC 3 Phase, +10%, -12%
AC Line Frequency
60 Hz (57 – 60.5 Hz) Field Settable
Continuous AC Current
684 A RMS
Overload AC Current
900 A RMS
Continuous AC Power
Overload AC Power
0 – 1.0 Leading or Lagging
IEEE 1547 Compliant, <5% TDD
-10 — 45°C
Rated Max Elevation
1,000 Meters Full Power
101” x 85” x 61” w/o transformer
7″ Touch Screen with Status LEDs
ModBus TCP, DNP3, IEC-61850
DynaCloudTM – Real time monitoring with automated alerts and data logging
3 Analog Inputs, 3 Analog Outputs
3 Digital Inputs, 3 Relay Outputs
SOLAR PLUS STORAGE SYSTEM COMPARISON WHITEPAPER
To learn more about the options available for solar plus energy storage systems, including AC-coupled, DC-coupled, and hybrid systems, download our Solar Plus Storage System Comparison whitepaper.