Partial Discharge Online Monitoring System

MOEORW-W5085 Partial Discharge Online Monitoring System is a high-performance digital partial discharge online monitoring device independently developed by our company with decades of experience in high-voltage electrical testing. It is specially designed for online insulation monitoring of high-voltage primary equipment such as switchgears, transformers and cables, targeting B2B bulk purchasers including power engineering general contractors, substation operation & maintenance enterprises, complete electrical equipment manufacturers, and industrial & mining power distribution rooms.

Core working logic: Equipped with high-precision industrial acquisition cards to realize high-speed A/D conversion. Adopting multiple composite anti-interference algorithms combining hardware and software, the system filters complex on-site interference such as electromagnetic noise and ambient noise to accurately capture weak partial discharge signals. Based on two-way Ethernet data transmission, it supports real-time local data collection & storage and centralized remote background monitoring, realizing 24/7 uninterrupted early warning of insulation hidden dangers of high-voltage equipment. It replaces traditional offline periodic inspection and greatly cuts manual operation & maintenance costs.

Bulk procurement application scenarios: Supporting equipment for newly-built substations, intelligent renovation of aging power distribution rooms, centralized monitoring projects of factory high-voltage equipment, and standardized monitoring section bulk supply for power grid systems.

The complete system consists of three standardized modular units, available for separate purchase or full-set bulk procurement, adapting to varying project budgets and monitoring point demands:
1.Partial Discharge Sensors with Multi-type Compatibility Compatible with four mainstream partial discharge acquisition components: contact & non-contact ultrasonic sensors, TEV transient earth voltage sensors, UHF ultra-high frequency sensors, and wideband Rogowski coil current transformers. All signals are transmitted via standard 50Ω coaxial cables following universal industrial interface standards. Clients can reuse their existing sensors without purchasing extra matching parts, cutting total procurement costs for bulk projects.
2.On-site Monitoring Unit (Core Acquisition Host) Integrated cabinet design integrating full functions including signal conditioning, noise suppression, A/D conversion, local data storage, alarm output and Ethernet communication. Each standard host comes with 2/4 BNC signal channels and supports hardware channel expansion. One single host can monitor multiple high-voltage devices, reducing the number of hosts needed for projects and lowering overall complete-set supply costs.
3.Remote Background Monitoring Computer & Monitoring Software One background server can connect dozens of on-site monitoring hosts simultaneously to centrally manage all monitoring points in a station, with multi-site hierarchical control function suitable for bulk centralized monitoring projects of large substations and multi-power-distribution-room industrial parks.

All specifications are measured data from standard laboratory signal sources. Every unit undergoes 100% full-function inspection before delivery, with third-party electrical calibration reports attached, complying with national industrial standards for high-voltage monitoring equipment in power systems:
1.Signal Acquisition Performance (Core Accuracy Indicators)

• Channel configuration: Standard 2/4 BNC electrical signal interfaces with hardware expandability for synchronous multi-point monitoring
• Max sampling rate: 200MSa/s, ultra-high sampling speed fully captures instantaneous weak partial discharge pulses to avoid missing short-term insulation discharge signals
• Sampling precision: 12-bit industrial A/D conversion, distinguishes tiny discharge quantity differences to prevent missed early insulation defect alarms
• Measuring range: 0.01mV ~ 20V (100dB dynamic range), covering full monitoring range from slight partial discharge to severe discharge
• Frequency band: 10kHz–100MHz, compatible with signal frequency bands of ultrasonic, TEV and UHF sensors
• Nonlinear error: ≤5%, top-tier industrial precision with minimal long-term data drift, requiring infrequent calibration

1)Human-Machine Interaction & Local Display 6.5-inch 640×480 TFT industrial touch color screen, supporting external USB mouse & keyboard. On-site parameter debugging, waveform viewing and alarm record export can be completed without extra computers, cutting auxiliary equipment investment for construction sites.

2)Local Storage Configuration 4GB RAM + 32G industrial solid-state drive, capable of circularly storing complete monitoring waveforms, trend data and alarm records for at least 3 years with zero data loss after power cut, meeting the power industry standard of data archiving for a minimum of 2 years.

3)Hardware Interfaces 2 USB ports, 1 Gigabit Ethernet port and multiple BNC signal inputs, full interface coverage supporting external storage, remote networking and sensor connection without extra adapter modules.

4)Working Condition Adaptability (Core Demand for Bulk Outdoor & Power Distribution Room Projects)

• Operating temperature: -20℃ ~ +60℃, applicable to low-temperature power distribution rooms in northern winters and high-temperature outdoor box transformers in southern summers, compatible with projects nationwide
• Storage temperature: -20℃ ~ +45℃, no equipment failure risks during bulk warehousing and long-distance transportation
• Power supply: 220V AC mains power, unified standard for domestic power distribution systems, no power circuit renovation required for projects

2.Main Control Hardware 1.6GHz industrial CPU with stable embedded Win7 system, supporting continuous 7×24-hour stable operation without crash or lag, matching long-term online monitoring requirements.

The system includes two complete software suites: local software for on-site hosts and remote centralized background monitoring software, covering all functions to meet on-site commissioning and remote centralized control demands in one stop. All functions are unlocked free of charge with permanent unified authorization for bulk procurement:
1.Local Software Functions of On-site Monitoring Unit (1) Synchronous 4-channel real-time waveform display: Real-time refresh of time-domain waveforms to intuitively check discharge pulse amplitude and phase, with one-click mV/dB unit switching. Built-in FFT frequency domain analysis and N-Q-φ partial discharge 3D mapping distinguish genuine partial discharge from environmental interference to lower false alarm rates. (2) Automatic trend recording & customizable parameters: Auto-store discharge trend curves by minute intervals, with customizable recording cycle, alarm threshold and alarm delay. Historical data of single day/week/month can be freely filtered and database files exported in bulk for project filing. (3) Hierarchical alarm management: Pop-up automatic reminders for exceeding-standard signals, complete storage of all alarm records (discharge channel, discharge value, precise timestamp). Double-click to view alarm waveforms for fault tracing; password protection for program exit and parameter modification to avoid misoperation by on-site staff. (4) Software registration mechanism: 3-month trial version and permanent authorized version available. Permanent registration codes are provided uniformly for bulk full-set procurement with no annual fees or function subscription charges afterwards.

2.Core Value-added Functions of Remote Background Monitoring Software (Core Competitive Edge for Large Bulk Projects) (1) Multi-site cluster management: One background system connects multiple on-site hosts with visual site tree management on the left. Users can tick to hide/display curves of any site or sensor, customize curve colors for sensors, realizing neat unified monitoring interface for multiple projects. (2) Remote online commissioning without site visit: Connect any on-site host with one click from the background to access real-time waveforms and adjust acquisition parameters remotely, handling equipment abnormalities from afar and cutting after-sales travel costs drastically. (3) Dual data display modes: One-click switch between trend graph and data table, customizable monitoring time ranges, bulk export of full-cycle monitoring data to local computers to meet power industry requirements of document filing and fault trace audit. (4) Automatic synchronous update: Customizable background data refresh interval for real-time synchronization of on-site discharge and alarm information, delivering insulation fault early warnings instantly.

1.Fully modular standardized design supporting bulk full-set or split procurement with controllable delivery cycle All sensors, monitoring hosts and background software adopt universal standardized design. Clients can purchase sensors separately, single monitoring hosts or full sets for entire stations. Core components are mass-produced on our in-house production lines with sufficient spot inventory. Delivery cycle for bulk orders is stably 7–15 working days to meet urgent stocking demands of engineering projects.

2.Full-scenario compatibility to reduce clients' supporting procurement costs Compatible with four mainstream types of partial discharge sensors in the market without mandatory matching of proprietary brand sensors. Equipped with universal 220V power supply, standard 50Ω coaxial cables and general BNC/USB/Ethernet ports, clients' existing construction accessories can be reused without extra procurement of special auxiliary materials for bulk projects.

3.Dual hardware & algorithm anti-interference technology cutting after-sales costs caused by false alarms Dual anti-interference system combining hardware signal filter circuits and adaptive noise suppression algorithms. Measured false alarm rate is lower than 3% under complex electromagnetic environments of industrial power distribution rooms and outdoor box transformers, reducing labor and travel expenses for clients' after-sales staff to inspect invalid alarms on site.

4.Permanent hardware & software authorization with no secondary charges for lower total long-term project costs Hardware hosts have no service life limit. Permanent registration codes are provided free of charge for software upon bulk procurement, with no annual fees, upgrade fees or remote connection service charges. Compared with competitors charging annual software fees per monitoring site, large multi-site bulk projects can save tens of thousands of yuan in operation & maintenance costs within 3 years.

5.Industrial wide-temperature whole machine with low failure rate for bulk outdoor projects Industrial wide-temperature chips are adopted for all components, and the whole machine passes high-low temperature cycle aging tests to operate stably between -20℃ and 60℃. For bulk deployment in outdoor box transformers and unattended power distribution rooms, the annual repair failure rate is below 0.8%, minimizing after-sales rework for bulk projects.

6.Complete qualification documents to meet bidding material demands in one stop Each unit is attached with factory test report, calibration certificate and product qualification certificate. We can uniformly provide enterprise ISO production qualifications and third-party electrical type test reports. Clients do not need separate third-party testing for bulk bidding projects, shortening the preparation cycle of bidding documents.