Description
1. Product Overview
H201TI CE‑H2 is a high-precision on-line hydrogen-in-oil monitoring transmitter of the HYDRAN series under GE Vernova (formerly GE Digital Energy). It is a standardized CE-certified version of the H201TI series, specially designed for core power main equipment such as oil-immersed transformers and high-voltage reactors. Integrating original dedicated HYDRAN sensing unit, intelligent thermal regulation system and microprocessor signal transmission unit, it serves as the core front-end acquisition device for on-line transformer condition monitoring and incipient fault early warning in power substation systems, new energy booster stations and industrial captive power plants. It is often matched with background monitoring systems to form a complete on-line monitoring system for dissolved gas in transformer oil.
Targeting hydrogen (H₂), the core characteristic gas of early transformer faults, this device adopts mature and stable dedicated sensing detection principle, eliminating redundant composite detection functions. It focuses on precise hydrogen collection, signal conditioning and standardized transmission output, featuring high detection accuracy, strong stability under working conditions, low temperature drift, long-term maintenance-free performance and wide adaptability. Built with independent thermal regulation and constant temperature control system, it can automatically counteract the interference of on-site temperature fluctuation on detection accuracy, solving industry pain points of traditional sensing devices including large temperature drift, data fluctuation, failure at low temperature and drift at high temperature. The whole machine complies with CE industrial safety certification standards and has passed stringent reliability tests including electromagnetic compatibility, high-low temperature cycling, insulation withstand voltage and vibration shock. It is applicable to harsh working conditions such as indoor and outdoor substation environments, strong electromagnetic interference and alternating temperature & humidity. It is widely used for intelligent supporting of newly built substations, reconstruction of old transformer monitoring systems, replacement of aging HYDRAN series equipment and spare parts reserve for on-line monitoring of power main equipment.
2. Functional Characteristics
2.1 Precise Dedicated Hydrogen Detection for Capturing Early Latent Transformer Faults
Taking hydrogen, which precipitates first due to internal overheating, insulation cracking and partial discharge inside transformers, as the sole monitoring object, the H201TI CE‑H2 adopts the original high-precision dedicated HYDRAN sensing unit to realize 24-hour continuous acquisition of dissolved hydrogen concentration in oil. It can accurately capture abnormal trends such as slight hydrogen increment, slow rise and sudden over-limit, and predict latent defects in advance including core overheating, winding insulation aging, local thermal faults and latent discharge of transformers. It fills the time-based monitoring blind spot of conventional periodic chromatography tests, provides accurate front-end data support for transformer condition-based maintenance, fault tracing and pre-treatment of hidden dangers, and effectively avoids sudden main transformer failures and unplanned outages.
2.2 Built-in Intelligent Thermal Regulation System for High-precision Stable Output across Full Temperature Range
Equipped with factory-customized closed-loop thermal regulation and constant temperature system combined with intelligent microprocessor temperature control algorithm, the device can sense real-time changes of internal and ambient temperature, automatically complete constant temperature compensation and parameter calibration, and thoroughly eliminate detection errors caused by alternating high and low temperature. Compared with ordinary monitoring devices, it can effectively solve problems such as detection failure at low temperature, data drift at high temperature and data jumping under temperature-variable working conditions. It achieves stable linear detection, zero zero drift and no accuracy attenuation within the full operating temperature range, adapting to severe substation conditions with large seasonal temperature difference, outdoor exposure and freezing cold, and guarantees accurate and reliable monitoring data all year round.
2.3 Intelligent Transmission via Microprocessor for Stable Transmission of Standardized Signals
Integrated with high-performance microprocessor operation and transmission unit, it possesses multiple processing capabilities including signal filtering, error correction, data noise reduction and linear calibration. It converts raw signals collected by sensors into standardized industrial transmission signals with stable transmission, strong anti-interference ability, no data distortion and zero transmission delay. It supports seamless connection with various power background monitoring systems, SCADA systems and condition monitoring platforms, realizing precise front-end acquisition and stable back-end analysis, and meeting the requirements of digital, visual and intelligent monitoring & control for smart substations.
2.4 CE Industrial-grade Compliant Design with Strong Anti-interference and High Reliability under Harsh Conditions
Designed in strict accordance with CE industrial safety certification specifications, the whole machine meets international industrial equipment standards in structure, electrical performance and protection. It adopts fully isolated electrical architecture, built with surge suppression, electromagnetic filtering, electrostatic protection and insulation withstand voltage protection mechanisms, which can effectively resist frequency converter harmonics, strong electromagnetic radiation, voltage fluctuation and transient pulse interference in substations. The body structure is seismically reinforced to withstand continuous equipment vibration, start-stop impact and long-term erosion of dust and moisture. The whole device has no high-frequency vulnerable components, supports 7×24-hour non-stop continuous operation all year round, and requires no frequent calibration and maintenance during long-term service.
2.5 Minimalist Integrated Structure with Convenient Installation, Non-destructive Replacement and Wide Adaptability
Adopting integrated cylindrical compact structure, the device matches standard NPT industrial valve mounting interfaces and supports pipeline connection of multiple specifications. On-site installation requires no complex oil circuit modification, equipment disassembly and wiring, or professional commissioning. Natively compatible with the full range of GE HYDRAN monitoring systems, it can realize non-destructive replacement of old H201TI series and similar front-end sensing transmission equipment. It adapts to reconstruction of new and old substations and compatible access of new and old monitoring systems, greatly reducing the cost of technical transformation, replacement and maintenance of equipment, and fits monitoring upgrading scenarios of various high-voltage oil-immersed power equipment.
2.6 Hardware-level Self-diagnosis Protection for Safe and Controllable Equipment Operation
Built with global hardware self-diagnosis mechanism, it can real-timely monitor core parameters such as the status of sensing unit, working condition of temperature control system, power supply status, signal transmission link and load abnormality. It accurately identifies hidden troubles including sensor failure, abnormal temperature control, communication fault, power fluctuation and pipeline abnormality to guarantee stable operation of the front-end acquisition device itself. Once equipment abnormality occurs, it can lock the fault state promptly to prevent uploading of invalid wrong data and ensure the validity and stability of data for the whole transformer monitoring system.
3. Technical Parameters
3.1 Core Adaptation Parameters
Model: H201TI CE‑H2 Product Series: GE Vernova HYDRAN Series Transformer Gas Monitoring Transmitter Brand: GE Vernova (Former GE Digital Energy) Product Type: On-line Monitoring and Transmission Equipment for Dissolved Hydrogen in Oil Adapted Equipment: High-voltage oil-immersed main transformers, oil-immersed reactors, industrial high-voltage oil-immersed electrical equipment Monitored Parameter: Concentration of dissolved hydrogen (H₂) in oil Core Configuration: Original dedicated HYDRAN sensing unit, closed-loop intelligent thermal regulation system, microprocessor transmission unit Core Functions: Continuous hydrogen concentration collection, constant-temperature precise detection, intelligent signal transmission, data noise reduction transmission, hardware self-diagnosis, adaptive working condition compensation Application Scenarios: On-line monitoring supporting for smart substations, replacement of monitoring equipment for old main transformers, early warning of latent transformer faults, spare parts reserve of core monitoring equipment for power systems, operation and maintenance supporting for new energy booster station equipment
3.2 Detection Performance Parameters
Detected Gas: Dissolved hydrogen (H₂) in oil Measuring Range: 0～2000ppm, standard measuring range for power monitoring Detection Accuracy: Industrial high-precision detection, stable linear output across full temperature range Response Characteristic: Fast response to changes of fault gas, capable of capturing slow increment trends Compensation Mechanism: Built-in intelligent constant-temperature thermal regulation, adaptive temperature compensation, working condition error correction Operation Stability: No zero drift, accuracy attenuation or data jumping during long-term operation
3.3 Electrical and Transmission Parameters
Power Supply: Dual-voltage adaptive switching, 90–132VAC / 180–264VAC, 47–63Hz Max Power Consumption: ≤475VA Signal Output: Standardized industrial transmission signal, compatible with mainstream power monitoring systems Transmission Characteristic: Isolated signal transmission, anti-interference, low delay, no distortion Electrical Protection: Multi-protection against overvoltage, overcurrent, surge, static electricity and electromagnetic interference Compliance Standard: CE industrial safety certification, complying with EMC specifications for power equipment
3.4 Structure and Installation Parameters
Structure Form: Integrated cylindrical compact industrial protective structure Equipment Dimension: Diameter 178mm, Length 180mm Mounting Interface: Compatible with 1-inch, 1.5-inch and 2-inch standard NPT internal thread valve interfaces Installation Method: Local pipeline installation on transformer body, plug-and-play without oil circuit modification Fixing Method: Thread locking, anti-vibration and anti-loosening, suitable for equipment vibration conditions Replacement Feature: Fully compatible with old H201TI series equipment; in-situ non-destructive replacement, no rewiring or re-commissioning required
3.5 Environmental Working Parameters
Operating Temperature: -20℃～+65℃, wide temperature adaptation for power industry working conditions Storage Temperature: -30℃～+70℃ Operating Humidity: 5%～95%RH (no condensation) Environmental Resistance: Resists strong electromagnetic interference, equipment vibration shock, alternating temperature difference, dust and moisture corrosion in substations Operation Mode: Supports 7×24-hour non-stop continuous on-line monitoring all year round
4. Hardware Configuration and Structural Advantages
4.1 Core Hardware Configuration
The H201TI CE‑H2 adopts factory-standardized hardware architecture from GE Vernova. It is equipped with imported original dedicated HYDRAN hydrogen sensing unit, closed-loop intelligent thermal regulation constant temperature module, high-precision signal acquisition chip, microprocessor intelligent operation and transmission unit, multi-stage EMI electromagnetic compatibility filter loop and global hardware self-diagnosis unit. All core components have passed strict factory screening, high-low temperature aging, precision calibration and CE compliance tests, specially adapted to long-term on-line monitoring scenarios of high-voltage oil-immersed transformers. Adopting single-gas detection architecture without redundant detection channels, the device completely eliminates cross interference between multiple gases. Relying on independent constant-temperature thermal regulation hardware, it fundamentally solves detection deviation caused by temperature fluctuation. Combined with intelligent data filtering and error correction algorithms, it can automatically filter invalid data induced by on-site electromagnetic interference and working condition fluctuation. Its detection precision, operation stability and environmental adaptability surpass ordinary general monitoring and transmission equipment.
4.2 Structural Design Advantages
The device adopts integrated cylindrical compact industrial protective structure with high integration and small volume, occupying little installation space and adapting to narrow installation positions on transformers and complex outdoor working conditions. The high-strength sealed body with military-grade protection technology features excellent dustproof, waterproof, moisture-proof, anti-corrosion, anti-aging and anti-vibration performance. It can withstand harsh outdoor environments including long-time sunlight exposure, rain and moisture, dust accumulation, alternating temperature and continuous equipment vibration for a long time, eliminating common faults such as body aging, water ingress and dust accumulation, sensor failure and data drift. With standardized universal NPT interface design, pipeline connection is simple and disassembly is convenient with strong compatibility, suitable for reconstruction of various oil-immersed power equipment and supporting of new projects. Natively compatible with the full range of GE HYDRAN monitoring background systems and mainstream power SCADA and condition monitoring platforms, in-situ replacement requires no pipeline transformation, signal configuration reconstruction or parameter recalibration, greatly cutting the cost of intelligent transformation, operation & maintenance and spare parts for power equipment.
5. Working Principle
The H201TI CE‑H2 monitoring transmitter adopts a full closed-loop working mechanism: insulating oil sampling → constant-temperature working condition adjustment → dedicated sensing detection → signal acquisition and operation → error calibration and filtering → standardized transmission output → hardware self-diagnosis protection. As the core front-end acquisition unit of the transformer on-line monitoring system, it realizes accurate, stable and continuous collection and transmission of hydrogen fault signals.
During operation, the device continuously samples insulating oil from the transformer body through the standard pipeline interface. Built-in high-precision permeation structure completes oil-gas separation, allowing only dissolved hydrogen to enter the sensing detection area and isolating interference from insulating oil, impurities and oil contamination to the detection unit. Meanwhile, the intelligent thermal regulation system real-timely monitors the internal temperature of the device and dynamically adjusts the constant temperature working condition to offset detection errors caused by ambient temperature difference and ensure stable detection environment. The original HYDRAN sensing unit performs precise detection of hydrogen concentration and converts gas concentration signals into standard electrical signals. After amplification, filtering, linear calibration and error correction by the microprocessor, standardized industrial transmission signals are output to the background monitoring system.
The device conducts real-time self-check of sensor status, operation of temperature control system, power supply condition and signal transmission link status throughout operation. It accurately identifies hidden risks such as sensor abnormality, temperature control failure, power fluctuation and transmission fault, locks fault status promptly to avoid uploading of wrong data, and guarantees stable and reliable front-end acquisition. The complete workflow features closed controllable logic, precise detection, stable transmission and strong anti-interference capability. It can accurately capture abnormal hydrogen changes of transformers all day long and provide reliable front-end data support for transformer fault early warning and condition-based operation & maintenance.
6. Application Scenarios
6.1 On-line Acquisition and Early Warning of Latent Faults for High-voltage Transformers
It is widely applied to high-voltage oil-immersed main transformers and reactors in power grid substations, photovoltaic & wind power booster stations, industrial captive power plants, metallurgical and chemical enterprises. As a core front-end acquisition terminal, it monitors changes of dissolved hydrogen concentration in oil round the clock, accurately captures latent faults of transformers such as local overheating, insulation aging, early discharge and core heating, and warns equipment hidden dangers in advance. It prevents major safety accidents including winding burnout, equipment breakdown and main transformer outage caused by fault expansion, ensuring safe and stable operation of power main equipment.
6.2 Front-end Supporting and Signal Transmission for Power On-line Monitoring Systems
It meets the front-end acquisition supporting requirements of various transformer condition monitoring systems, SCADA monitoring systems and intelligent operation & maintenance platforms. It is responsible for precise on-site raw data collection and standardized signal transmission, solving problems of traditional acquisition equipment such as low precision, poor stability, severe signal interference and data distortion. It guarantees accurate data and reliable operation of the whole monitoring system and supports digital and intelligent operation & maintenance management of substations.
6.3 Spare Parts Reserve and Emergency Replacement of Core Power Equipment
As original dedicated monitoring transmission equipment of the GE Vernova HYDRAN series, it is essential maintenance spare part for oil-immersed main transformers in power industry. It can rapidly handle on-site emergencies such as front-end acquisition device failure, abnormal data, signal interruption and sensor failure, quickly restore the on-line monitoring function of transformers and eliminate equipment monitoring blind spots. It ensures year-round safe and stable operation of power main equipment and avoids production safety hazards induced by monitoring failure.
