Smart Grids
Secondary Distribution Substations Monitoring Solution
Smart Sensors
Condition Monitoring
Asset Management
Being located close to energy end-users, Secondary Distribution Substations (SDS) always exist in large numbers, spreading throughout the territory. In order to fight both the rapid equipment decay and energy losses that affects electrical utilitiesacross the world and improve quality of service, resorting to remote condition monitoring is a key solution, thus providing real-time monitoring, assessment and communication of a number of status conditions in secondary distribution substations, yet at reduced costs.eneida®’s system provides both alarm and warning messages to staff in charge, corresponding to instant detection of appliance failures, as single events, as much as early warning of probable future malfunctions. Thus, allowing faster and more reliable condition diagnosis of Secondary Distribution Substations and, therefore, accurate and timely responses whenever required.
wireless reduced dimensions
modular
€reduced
installation costs
energy harvesting
eneida® provides a smart condition monitoring solution of
secondary distribution substations based on an innovative
distributed platform integrating smart sensors over wireless
networks. It is a cost effective solution, modular, reliable and
simple to install that enables the utility to remotely manage
and optimize its assets through the use of advanced analytics
and warnings, while minimizing outages, increasing network
reliability and optimizing maintenance.
eneida®’s Distribution SubstationManagement and Monitoring Solution
This solution consists of a fully modular platform that encompasses a number of different, independent and self contained smart devices which, being adequately located throughout a secondary substation, are functionally integrated by a higher level unit over a wireless network. This single controller unit in a substation acts primarily as data collector and processor from a number of sensors representing the status and condition of different devices and telecommunication node of a WAN-IP network (over GPRS). As depicted, besides acting locally as node of a low power, short-range wireless network (WPAN), this integrating unit has a role as gateway to the upper levels in the overall information system, for database maintenance, condition assessment, and alarm issuing.
Functionally, this system addresses the condition monitoring and diagnosis of electric components and, in accordance with the constructive type of secondary distribution substation – whether it is cabin, underground or pole-type, the intrinsic safety evaluation and the prompt detection of impending security and safety risks of the whole of substation premises, as follows:
� Switchboard: status information on all existing fuses, and real-time fuse blow-out detection;
� Transformer: vibration pattern and/or temperature taken at the top lid, with a non-intrusive sensors, thus detecting both mechanical and thermal deviations from standard normal behavior;
� Switchboard: data acquisition of RMS current and voltage flowing at each and every output LV single-phase circuit;
� Environmental safety: data acquisition of both temperature and relative humidity in the air, thus leading to abilities of fire detection and ventilation malfunction diagnosis;
� Environmental safety: flood detection and water pump malfunction diagnosis, alarms and control;
� Intrusion alarm and access control: prompt detection of intrusion through doors and ventilation grilles;
� Transformer attempted theft: prompt detection of transformer removal and dam-age;
� Partial discharges: detection and monitoring of partial discharges inside of SDS;� LV line monitoring: data acquisition of RMS current and voltage flowing at LV elec-
trical lines.
System Overview
EWS DTFEWS DTF is a wireless smart sensor that allows faster diagnostic and remote alarm about the fuse status at LV single-phase circuits,
typically in Secondary Distribution Substations (SDS).
EWS DTTI-rehThe EWS DTTI-reh is a non-invasive, wireless smart sensor for the measurement of electric current at LV
single-phase circuits, typically in Secondary Distribution Substations (SDS), and, thereafter, throughout LV distribution cabling.
EWS DTA3TAcceleration and Temperature smart sensor. Detection of the deviations from the vibration signature and overheating.
EWS DTH2OThe EWS DTH2O is a smart sensor device for the detection of water in industrial and energy facilities.
EWS DTPumpThe EWS DTPump is a self-contained smart sensor and actuator device for remote and real-time
monitoring, evaluation, test and control of an automatic water pump (like, for example, the ones operating in underground Distribution Transformers Substations, DTs).
EWS DTPThe EWS DTP is a small compact and robust smart proximity sensor. It allows detection of
opening/closing of doors and windows, and of the presence of equipment that could be removed, eg. transformers in distribution transformer substations (DTs), thus detecting and communicating intrusions and potential robberies in critical facilities.
EWS DTHTThe EWS DTHT is a robust, self-contained, smart sensor device for real-time, continuous and remote
measurement of the environment conditions, such as temperature and humidity.
EWS DTTThe EWS DTT is a robust, non-invasive, self-contained, smart sensor device for real-time, continuous and
remote measurement of the transformer temperature.
EWS DTVIFThe EWS DTVIF is a wireless smart sensor for the measurement of three-phase input voltage and current of the low voltage
electrical board of Secondary Distribution Substations (SDS). Also, the EWS DTVIF allows the status monitoring of fuses in LV three-phase circuits (up to 24 Fuses).
EWS DTP-gThe EWS DTP-g is a self-contained smart proximity sensor, with energy back-up. It allows real-time
detection of intrusion or theft of assets and its communication over GSM/GPRS protocol. It includes also a GPS Module that can be used to locate the monitored asset.
Solution Building BlocksSensors
Sensors Network Gateways
eneida® has wireless communications devices, operating over one of the most common frequency bands and protocols in the energy sector, ZigBee, and over the ‘free’ frequency bands of ISM 433 MHz (to receive information).
These devices act as gateway, bridging TCP/IP networks over GPRS communications or ModBus RTU communications and, also, as message and process routers throughout a wireless PAN net-work. Thus, this type of units allows users to easily access data collected by a number of scattered data acquisition devices, as well as issue commands to be remotely carried out at other devices across an industrial rig.
These devices are a versatile wireless smart routers, with adaptive software and memory buffers deep enough to provide the degree of data contention that is adequate to each and every applica-tion case, allowing for the differences concerning both message format and data rate communica-tion in the different networks. This gateway may be remote configured over SMS or GPRS.
There are available the following versions:* EWS G2G4-gpwr - converts Zigbee to GPRS;* EWS G433M-gpwr - converts 433MHz to GPRS;* EWS G2G4-mpwr - converts Zigbee to ModBus RTU;* EWS G433M-mpwr - converts 433 MHz to ModBus RTU.
The communications structure has been made as simple as possible. Communications are performed through a gateway (EWS G2G4-gpwr, EWS G433M-gpwr or EWS G433M-mpwr) that allows two-way communications between the central server and sensors installed at secondary distribution substations. The communication between gateway and central server is over GPRS (or Modbus when the SDS have a RTU installed that communicates over this protocol) and between sensors and gateway is over 2.4 GHz (Zigbee) or ISM 433Mhz radio.
The SDS monitoring and management software, EWS DT1, receive and manage, remotely, all data acquired by sensors. This software is based in five modules designated equally to the system benefits. The front end of this web application provides a country map with information about geo-referenced SDS and its sensors. It is a complete, fast and cost-effective solution for effectively managing and monitoring its assets. Through a single computer, tablet or smartphone, it allows the users to track its assets and to know its operational status. Plus, the users can automatically receive reports and warnings to staff in charge, corresponding to instant detection of appliance failures, as single events, as much as early warning of probable future malfunctions. Thus, allowing faster and more reliable condition diagnosis of SDS and, therefore, accurate and timely responses whenever required. This web application could be visualized through a computer, smartphone or tablet. This guarantees versatility and mobility to the users.
Communications and Software
Quality of Service Improvement� Fuse Status Real Time Monitoring� Output Currents Monitoring� Voltage Monitoring� Temperature Monitoring� Partial Discharges Monitoring
Outage prevention and/or its remote and real-time detection is one of the main focus of this solution;
DNOs receive warnings when an output circuit fails to provide energy.
DNOs receive warnings also when their DS have abnormal conditions that correlate with their potential failure: high temperature inside of DS that could cause its failure, or when it has partial discharge activity that indicates problems with this asset and its possible failure;
The monitoring of current and voltage gives information about the energy supply conditions and if these electrical parameters are out of the range defined by electrical regulator, the users receive warnings.
VARIABLES MONITORED AND SYSTEMS OUR PRODUCTS
Fuse Status Monitoring EWS DTF-r, EWS DTVIF
Output Currents Measurements EWS DTTI-reh, EWS DTVIF
Temperatures (Environment & Transformer`s) EWS DTHT-r, EWS DTT-r
Voltage Measurement EWS DTVIF
Communication Gateway EWS G2G4-mpwr, EWS G433M-mpwr; EWS G2G4-gpwr, EWS G433M-gpwr
Software EWS DT1
Effective Life Extension
BenefitsSecurity Conditions and Operation Management Improvement
Quality of Service Improvement Environmental
Risk Reduction
Technical and Non-Technical Losses Reduction
Environment Risk Reduction� Temperature Monitoring� Ventilation Problems� Fire Detection� Flood Prevention
High temperatures, temperatures variations and humidity levels inside of DS give warnings of potential Fire;
Software allows the dew point calculation – flood prevention;
Automatically water pump test and control – flood prevention – when the environment conditions show probability of rain or the existence of water;
Water and flood detection inside of DS.VARIABLES MONITORED AND SYSTEMS OUR PRODUCTS
Flood Prevention EWS DTH2O, EWS DTPump-r
High Temperatures, Ventilation Problems Reduction; Fires Prevention EWS DTHT-r
Communication Gateway EWS G2G4-mpwr, EWS G433M-mpwr; EWS G2G4-gpwr, EWS G433M-gpwr
Software EWS DT1
Effective Life Extension� Voltage and Current Unbalance Monitoring� Partial Discharges Monitoring� Temperature Monitoring
Our clients receive warnings when the operational and environmental conditions of the DS can affect significantly its effective life:
Current or Voltage Unbalance causes additional stress and abrasion of the power transformer, which causes a decrease in the lifetime of this equipment when unbalance values are critical;
Data correlation about partial discharge activity, temperature and humidity gives users information about the operations status of the DS assets;
High temperatures and hotspots in the transformer, probably allied to the high currents, decreases the lifetime of the transformer insulation;
Data correlation about environment temperature, transformer temperature and charge give users information about transformer abnormal operationconditions.
VARIABLES MONITORED AND SYSTEMS OUR PRODUCTS
Voltage or Current Unbalances EWS DTTI-reh, EWS DTVIF
Temperatures (Environment & Transformer`s) EWS DTHT-r, EWS DTT-r
Communication Gateway EWS G2G4-mpwr, EWS G433M-mpwr; EWS G2G4-gpwr, EWS G433M-gpwr
Software EWS DT1
Security Conditions and Operation Management Improvement� Access Control � Intrusion Detection� Removal/Damage of Transformer � Transformer Theft Detection
DNOs are automatically warned if there is an entrance to the DS, of if there are attempts to damage or remove the transformer;
The access control into the DS can help optimize the management of maintenance teams.
VARIABLES MONITORED AND SYSTEMS OUR PRODUCTS
Access Control, Intrusion Detection, Removal/ damage of Equipment EWS DTP-r
Transformer Theft Detection EWS DTP-g
Communication Gateway EWS G2G4-mpwr, EWS G433M-mpwr; EWS G2G4-gpwr, EWS G433M-gpwr
Software EWS DT1
Technical and Non-Technical Losses Reduction� Current Unbalance Monitoring� LV Line Losses Monitoring� Temperature Monitoring
Current Unbalance causes higher temperatures – losses per Joule effect – and decreases the efficiency of the transformer. Through the comparison of the theoretical losses and the actual losses the system provides warnings if the difference is critical;
Comparing the energy supplied by transformer to an output circuit and the energy measured in one point of the LV line, the system make the comparison of the values and gives a report about the losses in that line segment. The system analysis the voltage level in the monitored point. If the line voltage is low there is increased losses;
The increasing of Temperature causes more losses by Joule effect;
This system estimates non-technical losses per feeder/transformer and per phase by comparing energy demand at feeder/transformer level (including accurate technical losses) with customer billing.
VARIABLES MONITORED AND SYSTEMS OUR PRODUCTS
Voltage and Current Monitoring (DS and LV lines) EWS DTTI-reh, EWS DTVIF
Temperatures (Environment & Transformer`s) EWS DTHT-r, EWS DTT-r
Power Supplied vs Power Received/ Invoiced; Or Current Supplied vs Received EWS DTTI-reh, EWS DTVIF
Communication Gateway EWS G2G4-mpwr, EWS G433M-mpwr; EWS G2G4-gpwr, EWS G433M-gpwr
Software EWS DT1
Technical Specifications
EWS DTF EWS DTTI EWS DTH20 EWS DTPump EWS DTVIF
ELECTRICAL
Power Supply energy harvest-ing (voltage) and
storage (0.5F super capacitor)
energy harvesting (magnetic induction)
Battery A 3,6V 230 Vac Self-supplied, through V3
Power Consumption N/A N/A N/A <0,1 A @230Vac
Battery Backup Super capacitor 2 hours
N/A N/A
Line Voltage Range N/A N/A N/A N/A
ENVIRONMENTAL
Operating Temperature -10ºC to +55ºC -10ºC to +55ºC -20ºC to +85ºC -20ºC to +85ºC -10ºC to +55ºC
Operating Humidity Up to 85%, non-condensing
Up to 85º, non-condensing
Up to 100º Up to 100º, non-condensing
Up to 85º, non-condensing
MECHANICAL
Housing ABS ABS PC + GF AlSi12 ABS
IP Rating IP 20 IP20 IP 66 IP 66 IP 40
Ø split-core CT N/A 22 mm or 28 mm, maximum
N/A By operator
Mounting Options N/A N/A Screw Mounting Screw Mounting (optional socket)
Wall mounting with screws
Dimensions (WxHxD), mm
57.0 x 86.2 x 25.0 86.2 x 101.5 x 57.0 / 86.2 x 120.0 x 57.5
65 x 50 x 35 122 x 82 x 55 150 x 244 x 70
Weight, g 359
COMMUNICATION
Protocol 433MHz, Zigbee 433MHz, Zigbee 433MHz, Zigbee 433MHz, Zigbee r, g
Version r, r2 r, r2 r, r2 r, r2 r, g
Range 200 m@ +10 dBm, in open field
200 m@ +10 dBm, in open field
200 m@ + 10 dBm, in open field
200 m@ + 10 dBm, in open field
150 m@ + 10 dBm, in open field
Data transmission rate 115 kbps 115 kbps 115 kbps 115 kbps 115 kbps
Data refreshing rate Multiple of 5 minutes
Multiple of 5 minutes
Multiple of 5 minutes
Multiple of 5 minutes
Multiple of 5 minutes
CERTIFICATION
Manufactured under an ISO 9001 registered program
Yes Yes Yes Yes Yes
CE IEC 61131-2(2007) IEC 61131-2(2007) IEC 61131-2(2007) IEC 61131-2(2007) IEC 61131-2(2007)
DATA
Data Type Digital ON/OFF True RMS current Digital ON/OFF Pick current True RMS
Range N/A (0)1 - 400A N/A 0-15A / 230V 0-24Vac / 0 to 5A
Resolution N/A 0.1 A N/A 0.1 A 0.1V / 0.1A
Accuracy N/A Better than ± 1% N/A 5%1%
Data acquisition rate N/A Multiple of 1 minute N/A Multiple of 1 minute Direct / CT(2.5VA min)
EWS DTHT EWS DTT EWS DTP-G EWS DTA3T
ELECTRICAL
Power Supply Battery A 3,6V 3,6V Li - SO Cl2 sin-gle battery (2,1 Ah)
5Vdc ± 5% 7-30 Vdc
Power Consumption N/A During data aquisition: 12 mA During radio trab-smission: 35 mA During sleeping
mode: 10 µA
600 mA @ 5Vdc maximum
(320 mW max)
Battery Backup N/A N/A
Line Voltage Range N/A N/A
ENVIRONMENTAL
Operating Temperature -20ºC to +85ºC -10ºC to +85ºC -10ºC to +55ºC (discharge)
0ºC to +40ºC (charge)
-20ºC to +70ºC
Operating Humidity Up to 100º, non-condensing
Up to 100%, non-condensing
Up to 100%, non-condensing
Up to 100º, non-condensing
MECHANICAL
Housing PC + GF AlSi12 ABS Anodized Aluminium 6082 T6
IP Rating IP 65 IP 66 IP 65 IP 67
Ø split-core CT N/A N/A
Mounting Options Screw Mounting (optional socket)
Glue mounting N/A M8 Adapters
Dimensions (WxHxD), mm
65 x 50 x 35 50 x 45 x 30 (without antenna);
83 x 45 x 30 (with antenna)
130 x 105 x 55 38 x 70
Weight, g 150 270 180
COMMUNICATION
Protocol 433MHz, Zigbee Zigbee GSM / GPRS ModBus RTU
Version r, r2 r2 m
Range 200 m@ + 10 dBm, in open field
Outdoor line of sight up 50m
N/A
Data transmission rate 115 kbps 250 Kbit/s (Kbps) N/A
Data refreshing rate Multiple of 5 minutes
24 hours 7s
CERTIFICATION
Manufactured under an ISO 9001 registered program
Yes Yes Yes Yes
CE IEC 61131-2(2007) IEC 61131-2(2007) IEC 61131-2(2007) IEC 61131-2(2007)
DATA
Data Type % relative humidity and temperature
Temperature Digital ON/OFF Acceleration and temperature
Range Humidity: up to 100% RH; Tempera-ture: -20ºC to +85ºC
-10ºC to +85ºC 0 to 1 cm (with As-semtech CTI302M)
Acceleration: RMS - Vel. (0 - 50 mm/s) ; Temperature: -20ºC
to +80ºC
Resolution Humidity: 0,04%; Temperature: 0,01ºC
0,1ºC Acceleration : 12 bit; Temperature: 0,1ºC
Accuracy Humidity: ± 5%; Temperature: ±
0,5ºC typ
± 1ºC typ. Acceleration: 0,1% FS;Temperature:
±0,5ºC typ.
Data acquisition rate Multiple of 1 minute 15 minutes Multiple of 5 sec-onds
Edifício E - IPN, Rua Pedro Nunes :: 3030-199 Coimbra :: Portugal tel +351 239 111 180 :: fax +351 239 100 020 :: www.eneidaws.com :: [email protected]
About eneida® Wireless & Sensorseneida® Wireless & Sensors develops, manufactures and delivers robust Smart Sensors and Industrial Wireless Networks, certified and tested for operating in the aggressive environments of the electric utilities and large process industries (Oil &Gas, Chemicals, Mining & Metals), providing real-time, continuous and reliable visibility, monitoring and control of assets, people and environments.
eneida® offers Smart Sensors Networks that allow the electric utilities to, efficiently and continuously, monitor the condition of their Secondary Distribution Substations and the critical assets of Power Substations (Transformers, Circuit Breakers, HV Isolators and DC Systems). eneida® solutions allow to the Transmission and Distribution Network Operators to have significant improvements in terms of Quality of Service, Maintenance Productivity, Effective Life of the Equipment, Energy Efficiency, Security and Environmental Risks Reduction.
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