Integrated online monitoring device for casing

NegotiableUpdate on 12/10

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

System Introduction: The bushing comprehensive online monitoring device is a real-time monitoring system for the insulation performance, oil state, partial discharge, internal and external temperature and other parameters of transformer high-voltage bushings, which comprehensively perceives the status of high-voltage bushings and ensures the safety of substations

Product Details

System Introduction

The comprehensive online monitoring device for bushing is a system that monitors the insulation performance, oil state, partial discharge, internal and external temperature and other parameters of transformer high-voltage bushing in real time, comprehensively perceives the status of high-voltage bushing, and ensures the safety of substations. The entire system consists of intelligent end screen sensors, oil level sensors, oil temperature and pressure sensors, single hydrogen sensors, bus voltage acquisition devices, as well as comprehensive online monitoring devices for casing and supporting upper computer software.

Features

Install an integrated end screen sensor on the end screen to monitor in real-time the insulation status, dielectric loss factor, capacitance, leakage current, and partial discharge characteristics, partial discharge amount, and discharge frequency of the voltage regulator sleeve;
Install a hydrogen oil temperature oil pressure fusion sensor at the oil inlet of the high-pressure casing to monitor the oil status parameters, oil pressure, oil temperature, and oil level of the pressure gauge casing in real time;
Real time monitoring of H4 content, H2 content, and H2 change rate;
◎ Adopting an integrated end screen sensor to achieve synchronous acquisition of dielectric loss and partial discharge signals, easy and fast installation;
The measurement error accuracy of the system's dielectric loss factor is high, with a dielectric loss measurement error of "no more than ± (standard reading x 1%+0.001)" and a relative standard deviation of "less than 0.3%";
The system has strong anti-interference ability, high measurement accuracy and good stability under strong magnetic fields and different load changes;
The integrated end screen sensor does not change the original casing end screen grounding method, and the grounding wire does not need to be lowered, ensuring reliable grounding of the end screen nearby;
The specially designed alloy metal shell of the integrated end screen sensor has good electromagnetic interference resistance performance;
The integrated end screen sensor has a protection level of IP68, ensuring good sealing and weather resistance of the end screen;
Supports multiple communication methods, including RS485, GPRS wireless, and more;
The system hardware adopts modular design, which is convenient for maintenance, debugging, and production.

Technical Specifications

itemeye	pointmark
working power supply	AC220V±15%，50Hz
power consumption	≤25W
Working temperature range	-40 ℃~+80 ℃
sampling cycle	30 seconds
monitoring parameters	Leakage current, bus voltage, dielectric loss factor, capacitance, bushing oil temperature, bushing oil pressure, bushing hydrogen content, etc
alarm parameters	Dielectric loss factor, capacitance, oil temperature, hydrogen content in oil, oil pressure, partial discharge, etc
contact method	RS485, Wireless, 61850
Protection level	IP 66
Partial discharge monitoring frequency band	300 kHz~50 MHz
Minimum detectable local emission volume	<5pC
Measurement error of dielectric loss factor	≤± (standard reading x 1%+0.001)
Measurement range of dielectric loss	≤0.1%~30%
Equivalent capacity and accuracy	100PF~0.05uF; ±（Standard Readingnumber＊1%+1ｐＦ）
bus voltage	35kV-1000kV；≤± 0.2% reading
system frequency	45~65Hz； ±0.01Hz
Measurement range of leakage current at the end screen	3mA~1000 mA
Measurement accuracy of leakage current at the end screen	± (standard reading * 1%+0.1mA)
Measure oil temperature	-40℃~120℃， ±1℃
Measurement by pressure	10kPa~400KPa, 0.5% FS (full temperature range)
Hydrogen gas (solid-state palladium alloy hydrogen gas sensor)	0~5000ppm