Automated RLC Load Bank for Anti-Islanding Test
ARLC Series
Preen’s professional-grade RLC Load Simulator is built for anti-islanding testing and meets IEEE 1547 and 1547.1 standards. It simulates a wide range of islanding scenarios—including voltage/frequency drift, reactive power imbalance, and full power match—for accurate compliance testing. Its modular design enables parallel operation, scaling from 30 kW to 2000 kW. Combined with PAS/ADG power supplies and automation software, it delivers a complete anti-islanding test solution.
Complied with
IEEE 1547
IEEE 1547.1
Capacity
R 3 Phase: 15W-250kW adjustable
L 3 Phase: 15VA-250kVA adjustable
C 3 Phase: 15var-250kvar adjustable
Application
Solar inverters
Microgrids
Energy storage systems
Downloads
Key Conditions for Accurate Simulation of Islanding
The ARLC series can simulate a variety of different load conditions to effectively correspond to the islanding scenarios required by IEEE 1547, including:
ΔP = 0、ΔQ ≠ 0：Simulate inductive or capacitive loads to generate frequency drift
ΔP ≠ 0、ΔQ = 0：Simulate resistive load conditions that result in voltage shifts
ΔP ≠ 0、ΔQ ≠ 0：Simulate voltage and frequency synchronizing and drifting
ΔP = 0、ΔQ = 0：Emulate completely balanced load and inverter, making islanding virtually undetectable
Modular Design with Flexible Parallel Expansion
Preen Power’s ARLC series not only has excellent simulation capabilities, but also emphasizes flexibility and expandability, allowing your test equipment to be flexibly adjusted according to test needs. Its parallel design has the following advantages:
Flexible Capacity Expansion:
Each unit provides 250kW output, and can be quickly expanded to 500kW, 750kW, or higher load capacity by connecting multiple units in parallel. It can cope with test projects of different scales without replacing the entire set of equipment.
Plug-and-Play, Rapid Deployment:
Modular design with standardized interfaces enables faster multi-unit parallel connection and simplified setup, reducing installation and test preparation time.
Centralized Control with Synchronized Adjustment:
The PLC and IPC control architecture enables unified control and adjustment of parallelled units through a single operating interface, improving operational efficiency and ensuring consistent performance.
Lower Initial Investment Risk:
Customers can start with basic capacity to meet current needs, then easily add units to expand testing capability as requirements grow, avoiding high one-time investment.
Adaptable to Multiple Test Scenarios:
The system flexibly adjusts load configurations for various applications, including single inverter testing, anti-islanding verification, multi-point output validation, and high-power grid-connected testing.
Solar Simulation and Automated Test Integration System
Preen integrates RLC load modules with PAS & ADG series AC/DC power supplies to deliver a comprehensive solar simulation and testing platform. The system provides multiple automated testing capabilities through a software-controlled interface with graphical display, effectively addressing diverse testing needs including static and dynamic MPPT testing, anti-islanding test, and EN50530- compliant simulation validation.
Feature
✅Modular Integration Architecture: Complete integration between RLC Load and AC/DC sources enables simulation of various grid and load scenarios.
✅Multi-Function Test Interface: Software platform supports multi-window control, providing data trend charts, real-time parameter monitoring, and automated test report evaluation.
✅Solar Array Simulation Function (SAS): Provides I-V curve simulation and MPPT testing capabilities with automatic multi-curve generation and support various international testing standards.
✅Compliance with Standard Test Specifications: Supports EN50530 and other international standards to ensure equipment performance that meets industry specifications.
✅Simplified Parameter Setup: Features quick test parameter configuration through an intuitive interface, ideal for R&D, quality assurance, and certification applications.
Outdoor-rated Enclosure (optional)
Supports flexible load configurations for a wide range of applications, including single-inverter testing, anti-islanding verification, multi-point output validation, and high-power gridconnected testing.
User-Friendly Graphical Interface Software
Solar Inverter Testing:
This testing platform simulates and validates the dynamic response and control capabilities of photovoltaic inverters. Through integration of DC/AC power sources and RLC load modules, it effectively simulates operating conditions under various grid scenarios while monitoring key performance indicators to ensure inverter stability and efficiency in real-world applications.
RLC Load Control Testing:
This simulation system delivers high-precision three-phase RLC control for testing power equipment response under variable load conditions. The graphical interface enables easy phase-by-phase load configuration with real-time monitoring of power parameters and protection mechanisms, optimizing design processes and enhancing testing efficiency.
Anti-Islanding Testing:
The system conducts anti-islanding testing in accordance with IEEE 1547 standards, ensuring inverters disconnect promptly during grid power loss. Fully automated processes with integrated report generation significantly enhance testing efficiency and accuracy, providing a critical element in renewable energy equipment certification.
Anti-Islanding Test Configuration (IEEE1547.1-2020):
This test configuration validates distributed power system capability to correctly detect and terminate output during grid outage conditions. Using variable RLC loads and control switches configured to international standards, the system simulates actual islanding scenarios to support manufacturer compliance testing requirements.
