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fmc-tech ltd. Unit 3B2, Western Business Park, Shannon, Co. Clare, IRELANDT: +353 61 475765, W: www.fmc-tech.com, E: [email protected]

T: +353 61 475765 E: [email protected] - VAT No: 6367203PRegistered Office: 3B2, Western Business Park, Shannon, Co. Clare. Co Reg: 347203

X-NETOutlineData Sheet

Description:

In conjunction with Vattenfall Sweden, FMC-Tech has developed a fault location andmonitoring System that reduces the cost ofrunning and maintaining the DistributionNetwork, while at the same time improvingNetwork performance, and reducing outageduration. The X-NET uses a combination ofsoftware and easily installed line mountedequipment that monitors the distributionnetwork. The line equipment consists of a polemounted controller, and 3 line mounted currentsensors that communicate to each other viaradio. When installed, this set of three sensorsbecomes a data node on the network. (The

Controller also takes inputs from CTs forunderground cables etc.). The controllerforwards on the data reported by the sensorsvia GPRS to a server, (if customers have apreference for other communications methodsother than GPRS, these can be facilitated as anoption).

Multiple Nodes may be deployed throughout thenetwork. The system is designed to providereliable phasor current data at the customerschosen locations. It is used to provide loadingprofiles, identification (directional) of earth faultproblems, transients, short duration outages or

intermittent faults. It records data and reportsevents. Users are notified of events via SMS,email or via a schematic graphic on the web,The line mounted sensors provide highlyaccurate line current data, and are selfpowered via the magnetic field of the line, oralternatively by the on-board back-up batterywhen an outage occurs. The sensorscommunicate to the pole mounted controller viatheir onboard radios with a typical range of200M. The X-NET is remotely configurable,therefore it can be used either as a fault/eventdetector, load monitor, or both, with userconfigurable thresholds. All data may be

accessed via the secure web-controller. Thisallows the user to view all available downloadeddata from all the X-NETs deployed on thenetwork. The pole mounted controller requires alow voltage supply, and has a battery back upfor use in outages. (Alternatively FMC-Techsupply a solar panel powered option). Thecurrent sensors may be installed live line byuse of a grip all tool.

X-NET allows the Network Engineer to seetransients and events that are occurring in thenetwork. These events are logged anddisplayed by the frequency of occurrence togive a network condition analysis.

Benefits:

Immediate notification and identificationof faulted sections.

Identification of problem spots, fromlogging of multiple transients.

Fault cycle by cycle analysis

Load planning data delivery.

Quality of supply information.

Section metering.

When Multiple X-NETS nodes are deployedthey deliver distributed, differential and timesynchronized network data. The data recordedis both highly reliable and accurate. Thisapproach provides a greater level of networkintelligence, which enables the operator to findthe location of faults, and their cause.

A Data Node

Sensors

Radio

Pole MountedController

GPRS

Server

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User Interfaces

Schematic displaying Faults

The above schematic is displayed as a current state page on the web controller. It highlightsactive faulty sections in red between the nodes distributed in the netowrks. The fault type

pictograms are earth faults, short circuits, Cross Country Short circuits and outages. The currentstate page gives the user immediate notification of the fault, the amplitude of the fault current andthe schematic clears immediately the fault is cleared. All faults are stored in the database, thereforethe operator can move the period to view the the location and type of faults over time, and get anindication of problem sections of Network to support maintenance schedules.

SMSWeb

SCADA/OMS

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If the operator wishes to look in more detail into the individual fault they simply click on the redsection of line and a trace of the fault will pop up. (The length of the trace is user configurable, butdefault is 10 cycles either side of the event).

The level of detail of the analysis is user configurable. For example, the system can be used asa simple fault location device or as an event recorder. It takes a matter of minutes to fitsensors to the line and they can be installed on a live line via a hot-stick. The pole mountedcontroller achieves timing via its GPS connection (PPS timing), which means that the entire

system is time coherent. This allows differential type analysis, (for example when crosscountry faults occur). Because of its highly accurate timing, the system is suitable for all typeof grounding treatments, i.e. high impedance, low impedance etc. Line loading is charted ontoa separate page of the web-controller, and the user can select any node and review a graph ofthe load on each phase or sequence currents over a selected time period, (1 day, 1 week, 1month, 1 year). All the settings of the system are made via the web-controller; reportingintervals for load, fault current threshold settings, email and SMS notification recipients etc.

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Outline Specification.Sensor Performance

Current range 0A-300A (600A available)

Powering method Line powered

Min powering line current Typical 2Amps

Line Voltage Range 0 to 132kV

Sampling Rate 2 kHz at full sampling rate.

Earth Fault Sensitivity 1A in 300A

Communications 2.4GHZ Radio

Flash Memory 40 minutes of data

Battery Back Up 80 Hours (Rechargeable from Line)

Controller Standard Optional

Can Manage 4 Lines (12 Sensors)

GPS Location and Timing

GPRS communications (The communications method can bechanged dependant on the Customers requirements)

2.4GHZ Radio Mounting Brackets Voltage Input option Current Input option(CTs) Battery Back-up (150 Hours) Solar Powering

System Description

Captured Fault DataEarth Faults, Phase to Phase Faults, Over Currents, UnderCurrents, Dropped Phase or Phases

Threshold settings Remotely User Configurable

Typical Current Accuracy +/- 1%

Typical Phase Accuracy +/- 1

Interface to Enterprise Systems Database access via stored procedures SOAP/XML

Supported Interface to SCADA IEC Standards, DNP3, access via OPC/XML

Typical GPRS usage percontroller.

1MB per month (basic load profile reporting at 5 minuteintervals)

Battery Back Up 80 Hours (Rechargeable from Line)

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