The system relies on advanced power conversion technology, pulse width modulation (PWM) technology, digital control technology, electromagnetic compatibility (EMC) technology, power drive technology, intelligent charge/discharge technology, redundant paralleling technology, and network communication technology. It is a high-tech intelligent power supply system for substations.
Shared Battery Bank: The shared battery bank reduces procurement costs, saves floor space, and improves economic efficiency.
Integrated Monitoring System: The integrated monitoring system allows real-time viewing of power parameters, switch statuses, and file information for each subsystem. It also enables modification of system parameters, operation modes, remote control switching, and other functions – all一目了然 (clear at a glance), making management and maintenance convenient.
IEC 61850 Communication: Communication with the上位机 (host computer / supervisory system) via the IEC 61850 protocol greatly enhances the level of integrated automation and application management for substation power supplies.
Intelligent Feeder Monitoring: The switch status of each feeder circuit can be directly monitored and supervised.
No Shutdown on Load Short Circuit: The system does not shut down or interrupt AC output in the event of a load short circuit.
Isolation Transformers: Isolation transformers are provided between the UPS, inverter, communication power supply, and DC power supply system, preventing system faults caused by grounding.
Backflow Ripple Voltage Limitation: The backflow ripple voltage injected into the DC bus is limited, ensuring full compliance with the safety specifications of electric power systems.
Flexible System Configuration: The system can be configured flexibly – either as a single UPS or inverter unit in a standalone cabinet (suitable for substations below 110kV), or as two units in series hot-standby or parallel redundancy (suitable for substations at 220kV and above, or for critical power engineering projects).
The WDY Series Integrated AC/DC Uninterruptible Power Supply System for Electric Power fully integrates the AC/DC power supply system, DC power supply system, inverter power supply system, and communication power supply system into a unified solution. It is collectively designed, manufactured, and tested. Through methods such as network communication, design optimization, system interlocking, and intelligent equipment file management, an integrated power supply monitoring system is achieved. This results in a power supply system with higher levels of network intelligence, greater operational convenience, safer usage, and lower maintenance costs.
It is the optimal solution for unmanned substations and intelligent substations that require network-based management and full-parameter online functionality. Serving as the AC/DC uninterruptible power supply for all power automation systems, telecontrol execution systems, circuit breaker opening/closing operations, relay protection, automatic devices, signaling devices, etc., it is critical to the safe operation of the power grid. As one of the core equipment units for power generation and transmission, it represents a new generation of power supply system equipment for the electric power industry.
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