Fault location in analog as well as in digital secondary substations

EOR-3DS

The EOR-3DS combines short-circuit and earth fault indication in a single compact device. It can be used as a classic short-circuit and earth fault indicator, as well as digitisation unit for secondary substations. The device combines the advantages of various location processes. Through the prioritization and weighting of the location processes, they can be combined perfectly. This makes the EOR-3DS a superior aid when locating earth faults and short-circuits in analog as well as in digital secondary substations.

Have more questions or start an enquiry? Just click on “Product Enquiry”.

The advantages of the EOR-3DS as short-circuit and earth fault indicator

Numerous fault location processes

available in one single device

The earth fault indicator offers a wide range of location processes for both compensated and isolated networks; these can also be prioritised.

earth-fault-indicator

Compensated networks:

  • Transient earth fault process through use of the qu2 and qui algorithms for one-time faults, intermittent faults (qui), faults in loops with large circulating currents (qu2) and erroneous resistances can be located in the kOhm range
  • Active power direction method or cos(φ): Evaluation of the active power direction, active residual current increase
  • Harmonics process with measurement of the associated power direction for a user-selected frequency
  • Pulse location
  • Directional or non-directional short-circuit indicator with configurable reset time

Isolated networks:

  • Transient earth fault detection with the use of the qu2 and qui algorithms for one-time faults, restriking faults (qui) and faults in loops with large circulating currents (qu2)
  • Reactive power direction or sin(φ) method
  • Directional or non-directional short-circuit indicator with configurable reset time
earth-fault-indicator

High flexibility

through free programmability

Using the LUA programming language, customer-specific functions can be implemented in the earth fault indicator EOR-3DS. Information can also be exchanged directly between several EOR-3DS via Ethernet and functions can be realised based on this, e.g. monitoring functions for switching in compact switchgear.

Communications protocols (SCADA)

for every application

The EOR-3DS provides a wide range of protocols that can be used in parallel or one-by-one, including also IIot protocols via *MQTT.

Using the Modbus-Master Function, the EOR-3DS can also connect up to 6 devices (regardless of the manufacturer!) as Modbus slaves via Modbus RTU, translating the data into any other supported protocol.

This means that the EOR-3DS can also be used as a gateway or RTU.

earth-fault-indicator-mqtt

The following protocols are available:

  • MQTT IIoT / Management & Operations (incl. encryption with customer-specific certificates)
  • IEC 60870-5-101 / 104
  • IEC 60870-5-103 including fault records
  • DNP 3.0
  • IEC 61850 GOOSE
  • Modbus RTU or TCP
  • Modbus Master for up to 6 devices

The grid status always in view

flexible in the choice of your sensors

Do you see the risk of grid bottlenecks due to the strong expansion of decentralized generators or loads such as electromobility? Then monitor your medium-voltage level closely to keep an eye on trends.

Our EOR-3DS is optimized for the modern and highly accurate low power sensors of all major manufacturers on the market (Siemens, ABB, Zelisko, Greenwood Power and many more). Of course there is also the possibility of voltage measurement parallel to a capacitive voltage detection system (e.g. Capdis / WEGA). This provides the possibility to determine precise current, voltage and power measurement values even at the edge of the network.

Also at home in the world of classic voltage transducers

EOR-3DS can not only measure the voltage in parallel to a capacitive voltage detection system (e.g. Capdis or WEGA) or via low power sensors. The connection of a classic voltage transformer with 100V AC / 110V AC secondary voltage is also possible via the U10 adapter.

The same applies to current detection. Besides the possibilities of using low power inputs also classic current transformers with 1A / 5A secondary current can be connected to EOR-3DS when using the C21/C25 adapters.

earth-fault-indicator

Fit for the future with the EOR-3DS

through IT security incl. user administration

The AEToolbox parameterisation software communicates with the EOR-3DS devices in encrypted form. In addition, a user/role concept allows the devices to be password-protected. Here, access via TCP (AEToolbox) and the front panel of the EOR-3DS can be configured separately. Furthermore, the EOR-3DS provides fully implemented certificate handling for encrypted communication with IIoT software (via MQTT).

*MQTT (originally MQ Telemetry Transport) is a network protocol for machine-to-machine communication (M2M) from the field of the “Internet of Things” (IoT), which enables the transmission of telemetry data in the form of messages between devices, in particular the connection of sensors and actuators in electrical engineering. Since 2013, MQTT has been standardised as an IoT protocol by the Organization for the Advancement of Structured Information Standards (OASIS).

The advantages of the EOR-3DS as digitisation unit for secondary substations

The earth fault indicator EOR-3DS in the digital secondary substation combines classic earth fault and short-circuit location with the necessary digital interface functions. For the digital secondary substation, this turns a straightforward short-circuit and earth fault indicator into a completely new class of device:

Earth fault indicator EOR-3DS as digitisation unit for secondary substations


earth-fault-indicator-digitisation-secondary-substation
Schematic structure of the EOR-3DS as a digitisation unit in the intelligent secondary substation

The digital secondary substations is a key element for distribution system operators (DSO) in terms of automation, monitoring, and efficient operations of their grids. These digital secondary substations will be a vital element of the future actively operated smart grid and thus DSOs as well as manufacturers will have to face new challenges such as large-scale roll-outs of networked devices distributed over the whole power grid. The EOR-3DS in its function as a digitisation unit for secondary substations enables DSOs to operate a large number of digital secondary substations in a future-proof manner.

Implementing future-proof digital secondary substations

The EOR-3DS in its function as digitisation unit

  • Management & Operations Functions (*MQTT-Protocol):
  • Reduces your operating costs by supporting mass parameterisation and remote firmware updates
    • Bulk remote parameter setting, bulk over-the-air firmware update
    • Saves time and money in maintenance
    • Scalable to thousands of devices in rollout
  • SCADA & IIoT-Communication (*MQTT-Protocol):
  • Provides network transparency and flexibility in the grid through remote control and remote metering
    • Record medium voltage readings via high accuracy low power sensors
    • Distribute measured values via SCADA and IIoT communication (MQTT)
    • Get real data for accurate condition estimation on all voltage levels
  • Remote reported & remote controlled:
  • Increases the level of grid automation
    • Fault localisation and narrowing down of the fault location by remote signalling of all units
    • Remote switching of all cable fields and detection of all switch positions and remote control switches
    • Future-proof for higher autonomy functions (free programmability)
  • IT-Security:
  • Meets the highest standards through encrypted communication with certificate management
    • Encrypted communication with the AEToolbox parameterisation software
    • Encrypted communication of the MQTT protocols
    • Certificate handling incl. signed manufacturer certificate and up to 5 additional operator certificates

*MQTT (originally MQ Telemetry Transport) is a network protocol for machine-to-machine communication (M2M) from the field of the “Internet of Things” (IoT), which enables the transmission of telemetry data in the form of messages between devices, in particular the connection of sensors and actuators in electrical engineering. Since 2013, MQTT has been standardised as an IoT protocol by the Organization for the Advancement of Structured Information Standards (OASIS).

Official kick-off: the EOR-3DS in the digital secondary substation
»FF-U 2.0« at large German DSO “Netze BW GmbH”

Q&A with product manager EORSys, Gerald Jacob (A. Eberle GmbH & Co. KG)

You have any questions about the EOR-3DS?

Our specialists will be happy to help you!


Contact

News from the Productgroup

EORSys – News

Special Publication

Cost efficient management of digital secondary substations: Earth fault indicator EOR-3DS as digitisation unit for secondary substations

11. August 2023

Digital secondary substations are becoming a key element for distribution system operators in terms of automation, monitoring, and efficient operations of their networks. Read this technical report about[…]

Read more

Blogpost

Kick-off for mass rollout of the digital local network station at Netze BW

31. July 2023

Our product manager Gerald Jacob (EORSys) with a short Q&A at the official kick-off event of the digital secondary station FFU 2.0 at the large German DSO “Netze BW GmbH” in Stuttgart, Germany.[…]

Read more

Product innovation

Product discontinuation: Current Injection CI, as of 30.06.2023

14. July 2023

The Current Injection CI is currently scheduled for product discontinuation.[…]

Read more

Blogpost

Brand New: Short-circuit and earth fault indicator EOR-3DS released on 27.03.2023

27. March 2023

New combined earth fault and short circuit indicator EOR-3DS: AVAILABLE FOR ORDER NOW[…]

Read more

Blogpost

Product Announcement: Short and earth fault locator EOR-1DS released 05.08.2022

23. August 2022

We are pleased to inform you that the product “Combined Earth Fault and Short Circuit Indicator EOR-1DS” is officially released as of today. […]

Read more

Product innovation

Product Announcement: Short and earth fault locator EOR-1DS released 05.08.2022

23. August 2022

Combined earth fault and short circuit indicator EOR-1DS: AVAILABLE NOW![…]

Read more

Product innovation

Product discontinuation: DIN rail housing EOR-3D (characteristic B02) until 30.06.2020

12. April 2022

The EOR-3D with characteristic B02 (article numbers: 119.8500 to 119.8584) is currently planned for product discontinuation.[…]

Read more

Product innovation

Product discontinuation: Short-circuit and earth fault indicator EOR-1D, as of 31.03.2022 (successor will be EOR-1DS)

12. April 2022

Read more

Product innovation

Product care / follow-up device: EOR-3D B01 & B03 become the substantially optimized EOR-3DS

12. April 2022

The EOR-3D with feature B01 or B03 (part numbers: 119.80xx to 119.82xx.xx) is currently planned for product discontinuation.[…]

Read more

Info letter

Info Letter No. 21: The influence of the contact resistance at the earth-fault location on the zero sequence voltage UEN in compensated networks

7. September 2021

The earth fault in compensated networks is usually presented without a contact resistance at the fault…[…]

Read more

Info letter

Info Letter No. 18: Transient relay for high resistance, intermittent and recurrent earth faults (Part 2)

7. September 2021

Figure 3 can also be used for the determination of static earth faults. In an isolated network the entire…[…]

Read more

Info letter

Info Letter No. 17: Transient relay for high resistance, intermittent and recurrent earth faults (Part 1)

7. September 2021

The statistics show that earth faults constitute a large proportion of network faults. Conventional relays…[…]

Read more

Info letter

Info Letter No. 15: Earth fault location using the harmonic procedure (Part 2)

7. September 2021

For the study of the behaviour of the harmonic currents and voltages in the compensated network, at…[…]

Read more

Info letter

Info Letter No. 14: Earth fault location using the harmonic procedure (Part 1)

7. September 2021

For the following considerations a network with three outputs and an earth fault in line 1 in output…[…]

Read more

Info letter

Info Letter No. 12: E-coil control: Resonance curve procedure – Location curve procedure

7. September 2021

In “compensated networks” the current through the point of failure is minimised with the help of an…[…]

Read more

Info letter

Info Letter No. 6: Detection of transient earth faults

7. September 2021

When there is an earth fault in a conductor, at the start of the earth fault three events occur at the…[…]

Read more

Info letter

Info Letter No. 3: The E-coil in general

7. September 2021

The earth fault compensation coil, e-coil or also called the Petersen coil after its inventor, is connected…[…]

Read more

Contact request:



Your data is being processed

a-eberle kontakt newsletter ×