JYL-HY Overhead Fault Passage Indication System 10kV Line Earthing and Short-circuit Fault Identification

Summary

Line fault on-line monitoring system is a set of intelligent fault management system with remote distribution monitoring, centralized management and instant notification. It makes the existing fault detection technology progressed, which combines the line fault detection and communication transmission technology. By sending the information to the master station and completing the topology fault location, display and alarm notification at the master station, the fault location and query of the line become much faster. As shown below, the system consists of communication fault indicator, signal source, communication terminal, working master station, etc. And the working master station includes signal receiving terminal, master software, computers and mobile phones.

System Composition

The system consists of at least three acquisition units (model JYL-HY-CX fault indicator), a collection unit (model JYL-HY-HD) and the master station system. The distribution line fault location master station system consists of a variety of software and hardware components such as communication exchange, servers, master station software, etc., which supports access to existing distribution automation system simultaneously.

Acquisition unit

Achieve information interaction with system master station via RF (radio frequency)

Collection unit

Achieve information interaction with system master station via multiple communication methods

System master station

To carry out fault event recording, data release, storage of alarm log, sound and light alarm, SMS alarm according to the different processes of different types of faults through collection, storage, analysis and processing of the data returned by detection terminal.

System working principle

Fault Indicators are mainly installed at the boundaries of substation outlets, switch load sides, branch lines, cable inlets and outlets, and the main lines. The communication terminal is distributed and installed matched to the fault indicators according to the configuration rules, when the line fault online monitoring system is working, the fault indicators monitor line status in real time and accurately, and send back the collected information such as fault alarm, power transmission status, etc. to the master station monitoring system through the communication terminal; The master station monitoring system do statistics, analysis and topology calculation for the data, to determine the fault area; Simultaneously, the fault point message will be sent by SMS to the set mobile phones of related persons such as the utility production management departments, line specialists, line maintenance principals, etc., in order to guide the staff find the fault points promptly and accurately. The master station monitoring system uses software combined with the line topology and fault indicator position information to determine the fault point is located between L5 and L6, and alarms by the way of graph and sound.

Features

Features of Acquisition Unit

1. Trigger line current intelligently, earthing electric field high-speed fault recording(4kHz), capture small current earthing fault instantaneous transient waveform signal, achieve synchronous waveform acquisition for three phase current and earthing electric field with high-precision(±100µs) wireless time;

2. Identify line conditions accurately, support current waveform record;

3.  Live online, can control the line status in real time;

4. Can achieve wireless upgrade remotely;

5. Can achieve live installation and removal with insulation operation rod, which is safe and convenient;

6. Adopt small current self-powering technology, all the functions can be satisfied in the condition of 5A, 5s, through using new material and innovative power supply technology, with solar cells as backup power, which make it work normally when the line is out of power or the current is very low.

Features of Collection Unit

1. Can support the data collection of at least 3 groups(3 sets for each group) of acquisition units; The communication terminal synchronizes once every 30 minutes, to ensure high-precision(±100µs) three-phase wireless time synchronization;

2. Three-phase synthesis to obtain transient zero-sequence current, electric field signals, to achieve precise earth fault detection and positioning;

3. High reliability power supply, low power consumption design can make communication terminal work continuously for 15 days;

4. Regular self-test, and send self-test information to the monitoring center, can achieve remote maintenance and upgrade;

5. With power management function, can detect battery voltage, control the start, exit and activation of storage battery.

TECHNICAL PARAMETERS

Technical Parameters of Acquisition UnitInstalled

Technical Parameters of Collection Unit

MASTER STATION

System Components

The master station system consists of system monitoring computer, detection system software, data servers, communication exchanges, UPS power supply, etc. It mainly do the fault event recording, data release, alarm log storage, sound and light alarm, SMS alarm etc. according to the different process procedures of different faults, by collection, storage, analysis and processing the data returned from detection terminal.

Outline drawing

Download the specifications of JYL-HY Fault Passage Indication System Transformers

JYL-HY Download brochure.pdf