The MDC-2000 Substation Storage Battery Integrated Monitoring and Remote Automatic Maintenance System consists of a remote management background system (management layer) and a station-end online monitoring and automatic capacity verification maintenance system (execution layer), including components such as inverter, display, host and electric operating mechanism.

△ MDC-2000 Substation Storage Battery Integrated Monitoring and Remote Automatic Maintenance System

1. Function Overview

1. DC System Online Monitoring: AC/DC voltage and current, storage battery operation status, switch status, voltage, temperature and internal resistance of individual battery cells, etc.
2. One-click Inverter Discharge: Realizes remote one-click automatic capacity verification test of storage batteries, with electrical energy fed back to the AC grid, featuring energy conservation, environmental protection, high efficiency and reliability.
3. Full-automatic Operation of Electrically Operated Switches and Archiving & Analysis of Test Data: Remote electric control switching operation, export of charge-discharge test data and operation data to U disk or background system.

△ Schematic Diagram

2. Installation Method

Battery Room

The on-site 220V DC system is configured with a battery bank consisting of 104 cells of 2V 800Ah batteries. An individual acquisition module is connected to the terminal post of each battery cell, and the modules are connected in a daisy-chain manner to collect data of each single cell and upload it to the host for analysis.

Split-core Hall Sensor

The sensor is installed on the cable at the terminal of the battery bank to monitor the current of the battery bank and judge the battery status.

AC Output of Inverter Discharge

During the discharge test, the DC power discharged by the battery bank is converted into AC power by the inverter and fed back to the AC grid, which is safer and more environmentally friendly compared with the traditional discharge method through resistance wire heating.

Panel Cabinet Cable Wiring

The internal wiring cables of the device include: 14 power cables in total for No.1, No.2 and No.3 chargers, No.1 and No.2 battery banks, as well as No.1 and No.2 busbars; one 3-phase AC cable connected to the feeder panel; one communication cable for the battery room; and DC working power supply for the panel cabinet plus network cables connected to the background system.

△ Cables to Charger Panel and Panel Cabinet Power Cables

3. Discharge Test

During the discharge test, click "System Test" - "Start", and the system will automatically detect the switch position and the state quantity of the DC system. The switch operation during the test is fully automatic without manual intervention, with multiple switch operation interlock logics in place. When operating the switch manually, if the DC system status does not meet the switch operation conditions, the switch will not act, which ensures the reliability of load power supply on the busbar and avoids switching misoperation.

If the requirements are met, the detailed information on the right side of the screen prompts the device to start the automatic operation process. The system automatically checks the synchronization and grid connection according to the AC power of the feeder panel, the inverter starts normal operation, and the discharge process information is displayed in real time.

After the test is completed, the charge-discharge test data and operation data can be exported to a U disk or the background system, generating a complete discharge report without manual data recording, editing and entry.

△ Individual Battery Cell Under Test, Waiting for Data Upload

System Fault Judgment

If the set threshold is reached during the test or an abnormality is detected under normal operating conditions (e.g., voltage and temperature exceeding limits), the system will take corresponding actions and upload the alarm information to the background system for operation and maintenance personnel to check and handle.

The MDC-2000 Substation Storage Battery Integrated Monitoring and Remote Automatic Maintenance System has been widely applied in substations, power plants and large power-consuming enterprises nationwide. It replaces traditional manual operations with online integrated monitoring and remote charge-discharge technology for battery banks, featuring simple operation and safe automatic protection, which greatly reduces the intensity of operation and maintenance work and has won unanimous recognition from user units. Through real-time online monitoring of battery banks, the system enables real-time status monitoring, timely detection of faulty batteries and elimination of potential safety hazards, effectively prolonging battery service life, ensuring uninterrupted power supply of the system and providing strong support for the safe and stable operation of the power grid.