Transformer bushing online monitoring system
IN-205B Transformer Bushing Online Monitoring System
System Introduction
IN-205B Transformer Bushing Online Monitoring SystemIt integrates a variety of functions such as real-time monitoring, data acquisition, trend analysis, over-limit alarm, remote monitoring, data storage and query, etc. It aims to comprehensively and accurately monitor the insulation condition of the transformer bushings, which is able to effectively detect and warn potential faults in advance, and provide reliable data support for the safe and stable operation of the electric power system and the condition-based maintenance strategy. The system consists of a zero flux current transformer, signal processing unit, data acquisition unit, environmental sensor module (optional), communication unit, display module (optional), power supply module and background monitoring system software (optional). The system can also be used for online monitoring of capacitive equipment such as transformers and surge arresters.
| serial number | Diethylammonium chloride | Product Model |
|---|---|---|
| 1 | Transformer bushing insulation online monitoring system | IN-205B |
| 2 | Transformer bushing local line monitoring system | IN-205B2 |
| 3 | Transformer bushing insulation local discharge integrated online monitoring system | IN-205B3 |
Equipment parameters
| Monitoring Objects | Full Current, Capacitance, Dielectric Loss, Local Discharge | Measurement repeatability | < 0.2% |
| Full current measurement range | 2mA ~ 1000mA | Full current measurement accuracy | ± (standard reading 1% + 0.1mA) |
| Capacitance measurement range | 100pF ~ 50000pF | Capacitance Measurement Accuracy | ± (standard reading 1% + 1pF) |
| Dielectric Loss Measurement Range | 0.001 ~ 0.3 | Dielectric loss measurement accuracy | ± (standard reading 1% + 0.001) |
| Operating power | AC220V ±10% | communication protocols | Modbus, DL/T860 |
| environmental adaptation | Ambient temperature: -40℃ ~ +70℃; Ambient humidity: 0 ~ 95% (no condensation) | protection class | Standard 19-inch rack mount (IP30); wall mount (IP55) |
Transformer bushing as a core component connecting the internal transformer winding and external power grid, its insulation status directly affects the stability of the power system, the monitoring system is mainly used in the following scenarios:
- Large substation core equipment monitoringThe system is designed to track the changes in insulation performance of main transformer casings of 220kV and above voltage levels in real time, so as to avoid substation shutdowns due to casing aging and partial discharges, and to ensure the reliability of power supply to the regional power grids;
- New energy power plant supporting monitoringIn wind power and photovoltaic power stations, it is suitable for outdoor complex environments, continuously monitors key parameters such as casing capacity and dielectric loss value, prevents casing failures triggered by extreme weather (high temperature, high humidity, and lightning strikes), and supports the stable connection of new energy power to the grid;
- Operation and maintenance of captive power plants of industrial enterprises: Provide monitoring services for transformers of captive power plants of high energy-consuming enterprises, such as iron and steel, chemical industry, etc., to avoid production interruptions caused by casing failures and to reduce the loss of production stoppages of enterprises;
- Old equipment upgrading assistanceThe company's online monitoring system replaces the traditional periodic outage testing for old transformer bushings that have been in operation for more than 15 years, accurately assessing the remaining life of the equipment without affecting production, and providing data support for the replacement of the equipment.
Multi-dimensional solution to power operation and maintenance pain points
Compared with the traditional offline detection methods, the transformer bushing online monitoring system has the following irreplaceable advantages:
- Higher security redundancy: Monitoring can be completed without power outage, avoiding the pressure of grid load adjustment brought by traditional power outage detection, and at the same time, reducing the safety risk of manual boarding and transforming operation, and shifting from "passive overhauling" to "active early warning";
- More accurate monitoringZero-flux current transformer and high-precision signal processing unit are adopted to realize accurate measurement of 2mA-1000mA full current range and 0.001-0.3 dielectric loss value, and the data repeatability error is ≤1%, which is far beyond the upper limit of the accuracy of manual testing;
- Greater environmental adaptabilityIt supports - 40℃~+70℃ extreme temperature and 0~95% (no condensation) high humidity environment, and with IP30 rack mount / IP55 wall mount protection design, it can work stably in both outdoor open-air substation and indoor power distribution room;
- More efficient operation and maintenanceIntegrated real-time data collection, trend analysis, limit exceeding alarm function, abnormal information can be synchronized to the power dispatching platform through Modbus/DL/T860 protocol, operation and maintenance personnel can remotely grasp the status of the equipment without on-site guarding, significantly reducing the workload of inspection;
- Better cost controlOn the one hand, it reduces the labor and material costs of regular outage inspection, and on the other hand, it avoids major failures through early warning, reduces the cost of equipment maintenance and replacement as well as the indirect losses caused by outages, and usually recovers the investment costs of the system in 1-2 years.
