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IEC 61850 Transformer Protection Relay
As a supplement to transformer main and backup protection, the digital main transformer integrated monitoring and control device realizes remote measuring, remote signaling, remote control and remote regulation. It is generally panel-mounted with transformer differential relay protection and other transformer protection relays.
Communication Mode:Optional: RS-485, CAN bus, IEC 61850 , IEC 60870-5-103
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Description
The IEC 61850 transformer protection relay is a numerical protection device designed for transformer protection and digital substation applications. It combines transformer differential, overcurrent, earth fault and voltage protection with IEC 61850 communication, supporting GOOSE, MMS and integration with substation automation and SCADA systems.
Key Features
- IEC 61850 communication
- GOOSE peer-to-peer messaging
- MMS communication
- Transformer differential protection
- Overcurrent and earth fault protection
- Fault recording and SOE
- Ethernet communication
- SCADA integration
- Flexible protection settings
What Is an IEC 61850 Transformer Protection Relay?
An IEC 61850 transformer protection relay is a numerical transformer protection device that uses the IEC 61850 communication standard to exchange protection, measurement, status and control information within a digital substation. In addition to conventional transformer protection functions such as 87T differential protection and overcurrent protection, the relay can communicate with other intelligent electronic devices (IEDs), SCADA systems and substation automation systems through standardized Ethernet-based communication.
IEC 61850 Functions
| Function | Application |
|---|---|
| MMS | SCADA monitoring and data exchange |
| GOOSE | High-speed interlocking and trip signals |
| Ethernet | Substation communication network |
| SOE | Event recording |
| Fault Records | Post-fault analysis |
| Remote Setting | Protection management |
EC 61850 GOOSE for Transformer Protection
IEC 61850 GOOSE enables fast peer-to-peer communication between protection relays, bay controllers and other intelligent electronic devices without relying on conventional hardwired signal connections for every interlocking or trip signal.
| Conventional Substation | IEC 61850 Digital Substation |
|---|---|
| Hardwired signals | GOOSE messages |
| More copper wiring | Ethernet network |
| Point-to-point connections | Peer-to-peer communication |
| Difficult expansion | Easier system expansion |
| More wiring maintenance | Centralized network management |
IEC 61850 Transformer Relay for SCADA Integration
The relay can exchange transformer protection and measurement data with the substation automation system through IEC 61850 communication. Depending on the project configuration, monitoring data can include phase current, voltage, active power, reactive power, protection status, alarms, SOE and fault records.
Transformer Protection Functions
| ANSI | Function |
|---|---|
| 87T | Transformer Differential Protection |
| 50/51 | Overcurrent Protection |
| 50N/51N | Earth Fault Protection |
| 46 | Negative Sequence Protection |
| 49 | Thermal Overload Protection |
| 27 | Undervoltage Protection |
| 59 | Overvoltage Protection |
| 24 | Overexcitation Protection |
IEC 61850 Transformer Relay vs Conventional Protection Relay
| Item | Conventional Relay | IEC 61850 Relay |
|---|---|---|
| Communication | Serial / hardwired | Ethernet |
| Interlocking | Hardwired | GOOSE |
| SCADA | Conventional protocols | IEC 61850 MMS |
| Signal wiring | More wiring | Reduced wiring |
| Data sharing | Limited | Network-based |
| Digital substation | Limited | Designed for digital substations |
| Engineering | More point-to-point wiring | IEC 61850 system engineering |
Outline and Installation Dimensions
Power Transformer Protection Devices Setting List
| No. | Display Name | Range | Step | Remarks |
|---|---|---|---|---|
| 1 | Tap Setting | |||
| 1.1 | Automatic Tap Regulation | 1/0 | 1: Enable, 0: Disable | |
| 1.2 | Manual Tap Regulation | 1/0 | 1: Enable, 0: Disable | |
| 1.3 | Remote Tap Regulation | 1/0 | 1: Enable, 0: Disable | |
| 1.4 | Tap Position Display via YX1-7 | 1/0 | 1: Show tap position, 0: Common remote signal input | |
| 1.5 | Tap Transceiver Connection | 1/0 | 1: BCD code display, 0: 7-gear corresponding display | |
| 1.6 | Maximum Tap Position | 1～32 | 1 | |
| 1.7 | Boost Delay | 0～120.00s | 0.01s | |
| 1.8 | Buck Delay | 0～120.00s | 0.01s | |
| 1.9 | Boost Setting Value | 50～120.00V | 0.01V | |
| 1.10 | Buck Setting Value | 50～120.00V | 0.01V | |
| 2 | Measurement Setting | |||
| 2.1 | 380V Measurement | 1/0 | 1: On, 0: Off | |
| 2.2 | 1A Corresponding Current | 1/0 | 1: On, 0: Off | |
| 2.3 | Non-electrical Quantity | 1/0 | 1: With non-electrical quantity, 0: Without non-electrical quantity |
Applications
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Digital Substations – Fully digitalized substations with process bus and station bus communication.
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Power Transformer Protection – Primary protection for all types of power transformers.
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Industrial Substations – Reliable protection for manufacturing, mining, oil & gas facilities.
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Renewable Energy Substations – Solar and wind farm collection substations.
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Solar Power Plants – Protection for main step-up transformers in PV plants.
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Wind Power Plants – Protection for collector and main transformers in wind farms.
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Grid Modernization Projects – Upgrading aging grid infrastructure with smart protection.
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Substation Retrofit Projects – Replacing obsolete relays with modern numerical protection.
Key Focus Area:
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IEC 61850 Retrofit – Upgrading conventional substations to IEC 61850‑compliant digital substations. This is a long‑tail niche with fragmented but steady global demand. It requires deep technical expertise in both legacy systems and IEC 61850 standards, making it less competitive than mass‑market products. By focusing on retrofit projects, we can build a strong reputation through successful case studies and gradually capture this sustainable, high‑value market segment.
Why Choose This IEC 61850 Transformer Protection Relay?
IEC 61850 Digital Communication
Designed for integration into IEC 61850-based substation networks.
Integrated Transformer Protection
Supports differential, overcurrent, earth fault and other transformer protection functions.
Reduced Wiring
GOOSE-based communication can reduce conventional hardwired interlocking and signaling.
SCADA Integration
Supports real-time monitoring and event data exchange.
Fault Recording
Provides event and fault information for troubleshooting and post-fault analysis.
Project Support
Technical support is available for relay selection, configuration, communication mapping and project documentation.
FAQ
1. What is an IEC 61850 transformer protection relay?
A numerical protection relay that complies with the IEC 61850 communication standard, enabling interoperability and digital communication between substation IEDs.
2. What transformer protection functions does the relay support?
It typically supports differential protection, overcurrent protection, earth fault protection, overload protection, temperature monitoring, Buchholz relay, and more – depending on the specific model.
3. Does the relay support IEC 61850 GOOSE?
Yes. It supports GOOSE (Generic Object Oriented Substation Event) for fast trip and status signal exchange between IEDs without traditional hardwiring.
4. Can an IEC 61850 transformer relay connect to SCADA?
Yes. It connects to SCADA via the MMS protocol for uploading measurements and status data, and for receiving remote control commands.
5. What is the difference between IEC 61850 and conventional transformer protection relays?
Conventional relays rely on hardwired connections for signal transmission, while IEC 61850 relays use digital communication (GOOSE/MMS), reducing cabling, simplifying design, improving reliability, and enabling device interoperability.
6. Is this relay suitable for digital substations?
Absolutely. IEC 61850 compliance is a core requirement for digital substations, allowing seamless integration with other intelligent electronic devices (IEDs).
7. Does the relay support MMS communication?
Yes. MMS (Manufacturing Message Specification) is used for supervisory data exchange between the relay and SCADA or HMI systems.
8. Can the relay exchange trip and interlocking signals through GOOSE?
Yes. GOOSE allows the relay to directly exchange trip, block, interlock, and other binary signals with other IEDs, replacing conventional hardwiring with fast and reliable digital communication.
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High Quality
Stable performance, reliable design, ensuring safe operation for power system protection and grid stability.
Fast Delivery
Timely delivery to support your urgent orders and project schedules efficiently and professionally at any time.
Best Warranty
Professional Warranty: Reliable after-sales support for stable relay protection and long-term customer satisfaction.
xiao zhang –
This transformer measurement and control device runs stably with strong anti-EMI capability. It monitors transformer voltage, current, temperature and operating status in real time, executes protection logic reliably and simplifies substation daily operation management.
Jack –
Clear event logs make troubleshooting quick and easy.