High-Precision Electrical Parameter Monitoring System Solution
1.Introduction
With the increasingly stringent requirements for power supply quality in high-end facilities such as precision manufacturing, medical diagnosis, and data centers, traditional power monitoring systems, due to their low sampling accuracy and weak data analysis capabilities, can no longer meet the demand for deep insight and precise management of power quality. In response, we are introducing a new generation High-Precision Electrical Parameter Monitoring System. With millisecond-level accuracy in electrical parameter acquisition and analysis at its core, this system is dedicated to providing unprecedented visibility, control, and security for critical electrical loads.
2. System Core Positioning
The core positioning of this system is to build a millisecond-level accuracy electrical parameter acquisition and analysis platform. It not only performs basic parameter measurements like voltage, current, and power but also delves into capturing subtle, transient disturbances within the power grid. This enables "CT-like" precise diagnosis of power quality, providing a solid data foundation for predictive maintenance and root cause analysis of faults.
3. System Technical Architecture
To ensure the realization of its core positioning, this system adopts a technical architecture that combines leading hardware design with advanced software algorithms.
- High-Performance Hardware Acquisition Layer:
- Core Chip: Utilizes industrial-grade 24-bit high-precision ADCs (Analog-to-Digital Converters), providing extremely high dynamic range and measurement accuracy.
- Sampling Rate: Supports synchronous sampling at up to 1 MS/s (1 Million Samples per second), enabling accurate reproduction of power waveform details and laying the groundwork for high-frequency harmonic and transient event analysis.
- Sensors: Paired with high-precision Current Transformers (CTs) and voltage sensors to ensure authenticity at the source of signal acquisition.
- Intelligent Data Processing and Analysis Layer:
- Anti-Interference Filtering Algorithm: Incorporates advanced digital filtering algorithms to effectively suppress high-frequency noise interference in complex industrial electromagnetic environments, ensuring extreme reliability and authenticity of the acquired data.
- Real-Time Edge Computing: Performs preliminary real-time calculation and analysis at the data acquisition terminal, reducing the central server's burden and enabling immediate triggering and recording of critical events.
4. Detailed Typical Functions
Based on its powerful technical architecture, the system provides the following in-depth analysis functions:
- Harmonic Source Analysis (Harmonic Tracing)
- Description: Through high-speed spectral decomposition of current and voltage waveforms, it precisely measures harmonic components up to the 50th order and beyond. The system can not only display Total Harmonic Distortion (THD) but also, through trend comparison and pattern recognition, precisely locate the non-linear loads causing harmonic pollution (such as variable frequency drives, UPSs, precision medical imaging equipment, etc.).
- Value: Helps users identify the "source of grid pollution," providing direct evidence for targeted harmonic mitigation and avoiding damage to sensitive equipment caused by harmonics.
- Transient Process Recording
- Description: Continuously monitors the grid at millisecond speeds, capable of capturing and completely recording very short-duration events such as voltage sags, voltage swells, voltage interruptions, and transient pulses. The system records the event's time of occurrence, magnitude, duration, and saves the complete waveform before and after the event.
- Value: Effectively addresses transient power quality issues caused by switching operations, lightning strikes, line faults, etc., helping to analyze their impact on production equipment—such as "mysterious" shutdowns or operational anomalies—enabling a shift from "reactive response" to "proactive warning."
- Power Quality Assessment & Compliance Reporting
- Description: The system strictly adheres to the measurement methods for power quality parameters (e.g., supply voltage, frequency, flicker, unbalance) outlined in the IEC 61000-4-30 Class A standard for assessment.
- Value: Automatically generates professional assessment reports compliant with international standards, providing credible data support for power supply contract compliance, energy efficiency management, and meeting industry regulatory requirements.
5. Core Application Scenarios
This system is particularly suited for applications with stringent requirements on power quality:
- Precision Manufacturing: Protects wafer production lines, precision testing equipment, etc., from grid disturbances, reducing scrap rates and production interruptions caused by power quality issues.
- Medical Imaging Equipment Power Supply Assurance: Ensures the stable, high-quality operation of valuable large-scale medical equipment like MRI (Magnetic Resonance Imaging) and CT scanners, preventing image distortion and premature equipment wear.
- Data Centers & Critical Infrastructure: Provides a "clean" power environment for servers and network equipment, ensuring business continuity and data security.
- Renewable Energy Grid Integration Points: Monitors the impact of distributed energy sources (e.g., photovoltaic, wind power) connection points on the public grid's power quality.
