Product Overview

With the rapid development of UHV AC/DC grids and massive integration of wind and solar renewable energy, power system security and stability challenges have become increasingly prominent. NARI Relays has developed a large-scale Source-Grid-Load Precise Control System based on research into modern large-grid security and stability control architecture and key technologies. This system achieves precise coordinated control of multiple resources following faults in HV or UHV DC/AC grids, ensuring safe and stable grid operation. At the sending-end grid, it enables precise coordinated control of various controllable resources to maximize energy utilization efficiency. At the receiving-end grid, it precisely controls interruptible loads and reactive power resources, significantly reducing the impact of grid faults on industrial production and residential life.

Product Functions

Control Functions

Precise coordinated control of multiple resources

Millisecond-level precise load control

Second-level and minute-level precise load control

Multi-dimensional, hierarchical, and partitioned coordinated control of massive resources

Regional reactive power and voltage precise coordinated control

High-speed, high-capacity data communication

Online preset command control with full-link automatic feedback

Auxiliary Functions

Online monitoring of hardware and circuits

Synchronization via minute pulse, second pulse, and IRIG-B

128 event reports and 32 fault recording reports (host records RMS values, slave records instantaneous values)

Diverse communication solutions supporting IEC 60870-5-103 and IEC 61850 standards

User-friendly HMI: convenient commissioning software, powerful waveform analysis tools, etc.