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Integrated transformer monitoring system
➡️ Local Discharge Sensors (Ultrasonic, RF, and High Frequency Local Discharge Sensors): These sensors can detect local discharge signals and determine the insulation condition.
➡️ Vibration Sensor: Monitors the vibration of the transformer during operation. Abnormal vibration may reflect faults in the internal structure or components.
➡️ Gas in oil monitoring: analyzes the composition and content of gas in the oil, and can predict potential equipment failures (e.g., overheating, discharge, etc.).
➡️ Casing Condition Monitoring: Monitoring casing condition can avoid accidents caused by casing failure.
➡️ load current sensor: real-time monitoring of the transformer's load current, easy to grasp its operating load.
➡️ Oil level temperature sensor: monitors the temperature of the transformer oil and signals an abnormal rise in oil temperature (e.g. overheating of the windings).
➡️ Core / Clip Current Sensor: If current is present, the core insulation may be damaged and needs to be checked promptly.
➡️ fiber optic temperature measurement/infrared temperature measurement: accurate temperature measurement of transformer winding core and other hot spots. Fluorescent fiber optic temperature measurement has the advantages of strong resistance to electromagnetic interference, high measurement accuracy and fast response speed; through infrared technology to measure the temperature of all parts of the transformer, to find temperature anomalies, to assist in fault diagnosis.
Switchgear integrated online monitoring system
✅ Fiber optic temperature measurement / wireless temperature measurement
Fluorescent fiber optic temperature sensors are anti-electromagnetic interference/high voltage resistant, and measure temperature in real time for critical parts such as busbar contacts. Wireless temperature measurement device low power consumption, easy to install technology as a complement to form a three-dimensional temperature monitoring network.
✅Arc light monitoring
The arc light monitoring module captures the arc light signal and determines the fault level, linking the circuit breaker to disconnect the power to shorten the fault time and reduce the loss.
✅Monitoring of mechanical properties
Monitoring of parameters such as breaker and other opening and closing times and speeds and comparing them with standard values, and early warning when parameters are abnormal.
✅ Partial discharge monitoring
Multi-technology is used to capture the localized discharge signals of insulating components, which helps to detect hidden problems early and extend the life of the equipment by early maintenance.
✅Smoke monitoring
Smoke sensors are installed in key locations inside the cabinet to quickly detect smoke concentration, alarm when the threshold is exceeded and linkage to exhaust or fire extinguishing devices.
✅ Data management and supporting functions
It can automatically generate graphic reports of faults, store monitoring data for query and analysis according to a set period, and support customized monitoring rules.
Dry-type transformer thermostat
⭕️ utilizes three platinum RTDs embedded in the three-phase windings of the dry-type transformer to detect and display the temperature rise of the transformer windings, and automatically starts and stops the cooling fan to carry out forced air-cooling of the windings to avoid or reduce the damage to the insulating materials produced by overheating of the transformer and prolong the service life of the transformer, with a beautiful and generous appearance, clear display, easy and flexible operation, and strong anti-interference ability. Strong, stable and reliable, can be adapted to a variety of harsh environments.
⭕️ dry-type transformer temperature controller conventional function: with three-phase circuit display / maximum display, fan automatic / manual start and stop, over-temperature alarm, over-temperature trip, fault alarm, "black box" function, fan timing excitation function, analog test function, digital compensation function, etc., but also according to user needs to increase the cabinet door opening alarm function, 4 ~ 20mA analog current output, RS485/232 serial communication function, room environment temperature measurement and control, cooling fan fault detection and alarm, PTC150 over-temperature detection and alarm. It can also increase the alarm function of cabinet door opening, 4～20mA analog current output, RS485/232 serial communication function, measurement and control of ambient temperature of machine room, fault detection and alarm of cooling fan, interlock control of PTC150 over-temperature trip according to the user's demand.
⭕️ InnoTech provides dry-type transformer thermostats for the majority of users, with customized functions and universal models, and the equipment operates stably and reliably to ensure the normal operation of the power system.
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Oil-immersed transformer winding temperature monitoring
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Oil-immersed transformer winding temperature monitoring
Oil-immersed transformer winding temperature controller is used for real-time monitoring of oil-immersed transformer winding temperature, to realize the over-limit alarm and automatic start-stop cooling system, in order to ensure the safe and stable operation of the transformer core temperature control device.
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Oil level temperature monitoring
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Oil level temperature monitoring
Oil-immersed transformer oil surface temperature controller is real-time monitoring of the insulating oil surface temperature in the transformer tank, through the temperature signal to realize the over-limit alarm, automatic control of the cooling system start and stop, thus preventing the oil temperature is too high damage to the equipment, to protect the safe operation of the transformer of the key temperature control device.
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General Product Description For more information and prices, contact us.
Transformer Accessories
| product category | subcategories | Product Role | Benefits and Applications |
|---|---|---|---|
| Measuring and indicating devices | Pointer / Magnetic column typeoil level meter (MOG) | Visual on-site indication of the oil level in the reservoir by means of a float and mechanical linkage, usually with a low oil level alarm contact. |
Pros. Simple structure, high reliability, no need for external power supply. Applications. Standard on almost all transformers with oil conservator, it is the centerpiece of site inspections. |
| Winding Thermometer (WTI) - thermal analog | The winding hot spot temperature is indirectly estimated by measuring the top oil temperature and superimposing on it an analog of the temperature rise generated by the load current. |
Pros. Cost effective, approximates the thermal state of the winding and is key to controlling the cooling system and overload protection. Applications. Widely used in all types of oil-immersed power transformers as a basic means of winding temperature monitoring. |
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| Mechanical protection devices | Gas Relay (Gas relay) |
Minor malfunctions. Collects the gas that is slowly generated inside and causes the upper float to operate to send an alarm signal. Critical Failure. Responding to the rapid oil flow generated by the internal short circuit, the lower baffle operates to send a trip signal. |
Pros. It is very sensitive to various internal faults (turn-to-turn, core, etc.) and is the most unique protection for oil-immersed transformers. Applications. Required protection device for oil-immersed transformers with a capacity of 800 kVA or more. |
| pressure relief valve (with electrical contact) | When the internal pressure momentarily exceeds the spring setting value, the mechanical valve opens to release the pressure, and at the same time the linkage microswitch closes, outputting a trip signal. |
Pros. Fast response time can effectively prevent the tank from deformation or bursting due to overpressure. Applications. The last line of safety for all fully sealed oil-immersed power transformers, especially effective against internal arcing short circuits. |
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| Cooling system components | Radiator | Utilizing the natural convection (or forced flow) of the internal and external oils, the heat of the transformer oil is dissipated into the surrounding air by increasing the surface area. |
Pros. Mature structure, stable heat dissipation efficiency, modular installation. Applications. The main heat dissipating components of all oil-immersed transformers, configured in number and size according to capacity. |
| Cooling Fans (Cooling Fan) | Start and stop controlled by the thermostat, forced air blowing on the radiator surface to improve the convection heat transfer coefficient and enhance the heat dissipation effect. |
Pros. Economically and efficiently increase the load capacity of transformers approx. 25%-40%. Applications. For transformers with forced air (AF) cooling (e.g. ONAF, OFAF). |
|
| Oil Pump | Forced-driven insulating oil circulates between the transformer tank and the cooler, dramatically increasing the efficiency of internal heat exchange. |
Pros. Maximum heat dissipation efficiency, which significantly reduces the size and weight of the transformer. Applications. For large-capacity transformers with forced oil circulation (OD) cooling (e.g. ODAF, OFWF). |
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| Insulation and sealing systems | Resin Impregnated Paper Capacitor Sleeves (RIP) | A resin-impregnated capacitor screen is used as the main insulation to safely lead the high-voltage leads out of the grounded tank. |
Pros. Oil-free, fire and explosion-proof, resistant to high levels of fouling and maintenance-free, it represents the direction of technological development. Applications. City substations, offshore wind power, nuclear power plants and other occasions where safety and reliability are of paramount importance. |
| Self-regenerating/maintenance-free hygroscopes | The interior contains reusable molecular sieves. When saturated with moisture, the built-in heater will automatically activate to dry the molecular sieves to restore their moisture absorption capacity. |
Pros. No need to manually replace the hygroscopic agent, greatly reducing the workload of operation and maintenance, and the protection effect is more durable and reliable. Applications. Remote areas, offshore platforms, unattended substations and all important transformers that want to reduce O&M costs. |
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| Capsule Oil Storage Cabinet | An oil-resistant elastic rubber capsule is installed in the oil storage cabinet to completely isolate the transformer oil from the atmosphere, and the expansion and contraction of the oil is realized through the deformation of the capsule. |
Pros. Fundamentally prevents moisture and oxygen in the air from entering the oil, greatly delaying the aging of the insulating oil. Applications. Transformers with high reliability requirements are especially suitable for harsh environments such as humidity, heat and salt spray. |
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| Voltage regulator | On-Load Tap Changers (OLTC) | With the transformer running with a load, the winding taps are changed, thus smoothly adjusting the transformer ratio and stabilizing the output voltage. |
Pros. The core equipment for ensuring the voltage quality of the power grid, which can realize automated voltage regulation. Applications. Transformers for grid hub substations, industrial users sensitive to voltage fluctuations, and transformers connected to the grid with new energy sources. |
| Non-excited tap changer (OCTC/DETC) | With the transformer completely de-energized and uncharged, the winding taps are changed by manual operation to accommodate long-term, seasonal voltage variations in the grid. |
Pros. Simple structure, low cost and high reliability. Applications. Most distribution transformers and some power transformers that do not require frequent voltage regulation. |
🔍 Transformer online monitoring device
| 📊 Category | 🔧 Monitoring parameters | 🎯 Purpose | ✨ Advantages |
|---|---|---|---|
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Winding hot spot temperature.
Realization.
1. Fiber optic direct measurement (FOTS). Pre-built the fiber optic sensor into the winding.
2. Thermal modeling indirect calculations. Estimated by IEEE/IEC standard algorithms based on parameters such as top oil temperature, load current, and ambient temperature.
3. Implantable RTDs/thermocouples. Mainly used for dry or cast transformers.
|
Preventing the winding insulation from accelerated aging or burning out due to overheating is the core indicator that determines the load capacity and life of the transformer. |
Fiber optic method. Direct, precise, anti-electromagnetic interference, intrinsically safe.
Thermal Modeling. Low cost, can monitor stock transformers for a wide range of applications.
Synthesis. Enables dynamic load management, allowing for safe overloading and improved asset utilization.
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Characteristic gas concentrations and gas production rates.
H₂
CH₄
C₂H₄
C₂H₂
CO
CO₂
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Diagnose internal latent faults (e.g., discharge, overheating, arcing). Known as the transformer's"Blood tests."The |
Fault diagnosis is highly accurate and can effectively distinguish the type and severity of faults. Strong early warning capability to detect hidden problems at very early stages of failure. Avoid the lag and human error of traditional offline sampling and assaying. |
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📏 Oil level monitoring
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Insulating oil level height and pressure (by oil level meter, e.g. magnetic overturn plate type, pressure type).
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Prevent the oil level from being too low due to oil leakage, causing the core windings to be exposed and triggering insulation breakdown or poor heat dissipation. |
Simple and intuitive, it quickly identifies serious oil leaks. Combined with the oil temperature data, you can determine whether the oil level change is abnormal. Low cost and essential monitoring item to ensure safe operation of the transformer. |
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Monitoring indicators. Discharge (pC), number of discharge pulses, and phase profile of discharge (PRPD).
Sensor type.
UHF antenna
HFCT
Ultrasonic sensors
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Detecting early defects within the insulation system (e.g. air gaps, impurities) and preventing them from developing into penetrating breakdown faults. |
It is extremely sensitive and is the most effective means of detecting early defects in insulation. The general type of fault can be localized by graphical analysis. It can effectively prevent sudden collapse of insulation. |
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Dielectric loss factor (tanδ), capacitance (C), and partial discharge of the casing.
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Monitor the insulation status of high-voltage bushings to prevent explosions caused by moisture, aging, and internal defects. |
Effective prevention of sudden and highly destructive casing explosions. Enables condition-based maintenance and avoids unnecessary outage testing. Dramatically improve equipment and personnel safety. |
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The magnitude of the current in the core grounding wire (industrial frequency, harmonic component).
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Detects the presence of multi-point ground faults in the core to prevent localized overheating due to circulating currents and damage to the core. |
Can effectively detect hidden core multi-point ground faults. Prevents more serious internal failures caused by localized overheating. Enables direct monitoring of the health status of the iron core. |
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Microwater content (ppm), relative saturation (%RS) in insulating oil.
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Monitor moisture levels in oil-paper insulation systems, which can severely reduce insulation strength and accelerate paper deterioration. |
Real-time control of the "humidity" of the insulation system and precise assessment of the risk of insulation deterioration. Directs oil filtration or drying treatment to effectively extend transformer life. Combined with temperature, moisture migration in solid insulation can be evaluated. |
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Vibro-acoustic characteristics of the switching process, switching timing, motor current, oil temperature, number of actions.
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Monitor the mechanical components with the highest failure rates and diagnose problems such as worn contacts, jammed mechanisms, and sluggish response. |
Effectively prevent power supply accidents caused by OLTC switching failure or jamming. Evaluation of the internal mechanical condition by non-intrusive means (vibration, acoustics). Provide accurate data support for OLTC maintenance. |
🏭 Transformer online monitoring system industry applications
| 🏢 Industry Sectors | 🎯 Application Scenarios | 💡 Core requirements | 💎 Key values |
|---|---|---|---|
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⚡
grid company
(Electric Utilities) |
Transformers at all levels in transmission grid hub substations, distribution sites, converter stations, etc.
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🛡️ Ensure the safe and stable operation of the large power grid.
📊 Condition assessment and management of massive assets.
⚙️ Enabling Conditional Overhaul and Optimizing Investments.
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✅ Enhancement of power supply reliability.
✅ Prevention of large-scale power outages.
✅ Achieve intelligent and lean management of grid assets.
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🌱
New Energy Sector
(Renewable Energy) |
☀️ Box transformers for photovoltaic power stations.
💨 Wind farm turbine box transformer and main transformer of the booster station.
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📈 Coping with intermittency and volatility in power generation.
🤖 Enabling unattended and remote operation and maintenance of remote sites.
💰 Secure power generation and boost revenue.
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✅ Reduce O&M costs in the cost of kWh.
✅ Improve equipment availability and return on investment for new energy sites.
✅ (c) Ensuring stable access to "green power".
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🏭
industrial manufacturing
(Industrial Manufacturing) |
General step-down transformers and shop transformers for large factories in steel, petrochemical, semiconductor, and automobile manufacturing.
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🔄 Ensure production continuity and avoid unplanned power outages causing huge economic losses.
⚡ Coping with shock loads such as electric arc furnaces and rolling mills.
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✅ Change "after-the-fact repair" to "before-the-fact warning".
✅ Protect critical production equipment and avoid costly shutdown losses.
✅ It is a key technology to protect the "lifeline" of industry.
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💾
data center
(Data Centers) |
Power supply transformers at all levels for large internet companies, financial and cloud computing data centers.
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🎯 Zero-tolerance requirements for supply reliability.
🏆 Meets Uptime Tier level certification requirements.
⚡ Optimize power usage efficiency (PUE).
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✅ Provide the most solid power protection for data centers.
✅ Avoid data loss and service interruptions due to power failures.
✅ Improve data center energy efficiency and operations.
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🚄
rapid transit
(Railway & Transportation) |
Main transformers for traction substations of high-speed railways and city subways.
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🚇 Ensure that public transportation is safe and operates on time.
⚡ Coping with high current shocks during train startup.
📡 Reliable operation in complex electromagnetic environments.
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✅ Safeguard the smoothness and safety of transportation arteries.
✅ Avoiding train delays or stoppages and improving the quality of public services.
✅ It is an important part of the intelligent transportation system.
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🏥
Critical infrastructure
(Critical Infrastructure) |
Hospitals, airports, ports, large commercial complexes, important buildings.
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❤️ Safeguarding lives (e.g., hospital operating rooms).
✈️ Ensure that core operations are not interrupted (e.g., airport navigation).
🏢 Maintaining safety in public places.
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✅ Provide underlying power support for the smooth operation of key sectors of society.
✅ It is the basic guarantee for the city's emergency management and safe operation.
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Dry-type transformer thermostat, oil-immersed transformer temperature monitoring, gas relay, protection relay, pressure relief valve, transformer oil level meter, transformer thermostat, oil pressure relay. Moisture absorber, flow indicator, cross-flow cooling fan, transformer online monitoring device, transformer digital intelligent components, etc., a complete range, contact us for detailed information: 13959168359
