Products-GoLead Intelligent

SID-1520

Microgrid Coordinated Controller

The SID-1520 Microgrid Coordinated Controller is a comprehensive protection and measurement & control device specially designed for microgrids consisting of distributed power sources such as photovoltaic (PV), energy storage, and diesel generators.

It enables core safety and stability control strategies including millisecond-level grid-connected/islanding switching, rapid coordinated control of multiple power sources, and microgrid black start.

It is widely applicable in PV-storage-diesel microgrids, PV-storage microgrids, PV-storage-charging stations, and islands/remote areas without grid access.

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Main Functions

(1)
Millisecond-Level Grid-Connected/Islanding Switching
(2)
Anti-Islanding Detection
(3)
Rapid Multi-Source Coordinated Control
(4)
Black Start Control
(5)
Active Power Control
(6)
Reactive Power Control
(7)
AGC/AVC Forwarding Control
(8)
Synchronization and Grid Connection
(9)
Hierarchical Load Switching
(10)
Dual-Controller Switching
(11)
Comprehensive Monitoring
(12)
Event Recording
(13)
Operation Waveform Recording
(14)
Breaker Closing Time Recording
(15)
Time Synchronization Function

KEY Features

1

128 PCS Control Capacity

A single device supports simultaneous connection and control of 128 PCS units, suitable for medium and large-scale microgrids.
2

Dual-controller 4-state Management

Dual-controller switching and four-state management (master / standby / maintenance / fault) support manual, automatic, and remote switching modes, enabling unattended and maintenance-free operation.
3

≤5ms Grid Abnormity Detection

Grid abnormality detection time ≤ 5 ms, enabling seamless transition between grid-connected and islanded operation.
4

<1° Precision Synchronization Closing

Synchronization closing angle < 1°, with angle strategy accuracy ≤ 0.3°, minimizing paralleling impact.
5

High-accuracy Electrical Measurement

Frequency measurement accuracy < 0.01 Hz and voltage measurement accuracy < 0.5%, providing reliable data for control strategies.
6

Mainstream Protocol Compatibility

Compatible with mainstream industrial communication protocols, enabling connection with EMS and PCS without additional development.
7

Multiple Black-start Modes

Supports black start modes including independent energy storage, independent diesel generation, and diesel-storage combination, adapting to different microgrid operating conditions.
8

Real-time Monitoring & Power-loss Recording

Provides real-time monitoring of 9 electrical parameters, event records retained after power loss, and reviewable opening/closing waveform records for operation and maintenance diagnosis.
9

Priority-based Load Shedding

In emergency situations, loads are switched according to priority levels to ensure power supply continuity for critical loads.

SPECIFICATIONS

Communication Interfaces

RS485, RJ45, Optical port
AI/DI/DO

12U + 12I, 32 × DI, 32 × DO
Upper-Level Communication

IEC 61850 (MMS), IEC 104, connected to backend system or EMS
Lower-Level Communication

IEC 61850 (GOOSE), Modbus TCP/RTU
Connection Capacity

Supports simultaneous connection and control of 128 PCS units
Frequency Measurement Accuracy

< 0.01 Hz
Angle Strategy Accuracy

≤ 0.3°
Voltage Measurement Accuracy

< 0.5%
Synchronization Closing Angle

< 1°
Grid Abnormality Detection Time

≤ 5 ms
Operating Temperature

-25°C to +70°C
EMC Protection

EN 61326-1 (IEC 61000-4)