Online monitoring device for power quality of new energy generation system

1 Product Introduction

1.1 Product Overview

APView400Online monitoring device for power quality of new energy generation systemWe use a high-performance multi-core platform and embedded operating system to measure various power quality indicators in accordance with the measurement methods specified in IEC61000-4-30 "Testing and Measurement Techniques - Power Quality Measurement Methods". It integrates functions such as harmonic analysis, waveform sampling, voltage sag/sag/interruption, flicker monitoring, voltage imbalance monitoring, event recording, and measurement control. The device meets the national standard A requirements in terms of standardization of power quality index parameter measurement methods, measurement accuracy of index parameters, clock synchronization, event alarm functions, etc. It can meet the requirements of power quality monitoring for 35kV and below power supply systems and is widely used for power quality monitoring in industries such as chemical, steel, metallurgy, hospitals, data centers, transportation and construction.

Model Description

APView400Online monitoring device for power quality of new energy generation systemcharacteristic

High performance hardware platform

The device adopts a dual ARM core processor based on Xilinx SoC architecture. ARM1 runs embedded Linux, TCP/IP protocol, HTTP protocol, web server, and stores, statistics, and analyzes power quality data. ARM2 is used for data sampling and power quality data calculation. The device samples up to 1024 points per cycle and has high measurement accuracy to accurately record fault waveforms. Using a 32GB industrial grade large capacity SD card, it can store event records, fault waveforms, and other data for a long time. Featuring a user-friendly human-machine interface, the 800 * 480 pixel dot matrix color large-sized LCD allows users to view real-time waveforms and fault waveforms on-site, facilitating fault analysis.

Rich interface resources

4-channel AC voltage;

4-channel AC current;

5 programmable passive relay outlets and 5 active switch inputs;

Two RS485 serial communication interfaces, supporting Modbus RTU protocol and IRIG-B timing mode;

2 Ethernet interfaces, supporting Modbus TCP, IEC61850 MMS, FTP, device upgrade and maintenance;

1 USB interface, can be used for device maintenance.

Reliability Design

The device's software and hardware have continuous self checking function and good anti-interference performance. The device has passed multiple electromagnetic compatibility testing certifications, and its anti-interference performance in terms of electrical fast transient pulse group, electrostatic discharge, and surge meets national standards.

Technical Specifications:

Product installation diagram:

Product CE Certificate:

System topology diagram:

2. Power quality monitoring system

2.1 Networking Mode

The system connects the APView400 power quality online monitoring device to the gateway through a network cable. The gateway can be networked through wired or wireless means to upload data to the monitoring platform for centralized management of charging and swapping stations. 【 It is suggested to change it to facilitate centralized management of user stations 】

2.2 Harmonic analysis

As a national standard requirement test item, harmonics can be viewed by users through real-time frequency spectra of monitoring points 2-63 harmonics and 0.5-62.5th harmonics, and historical curves of each harmonic can be viewed by date. High harmonics will lead to a decrease in the power factor of the point system, reduce the utilization rate of the power grid, and increase the heat loss of connectors, posing safety hazards.

2.3 Event Analysis

The platform provides users with an overview of monitoring point events, including 141 types of steady-state crossing events, transient events, and transient event records. There are 136 steady-state events, 3 transient times, and 2 transient events. Event information includes the triggering time, event type, triggering channel, characteristic amplitude, and duration of the event. Users can query and export events according to their needs.

ITIC/SEMIF47 tolerance curve analysis can be provided for voltage transients, voltage dips, and short-term interruptions. Users can also view the waveform of the event that triggered the alarm, with an accuracy of 1024 points per cycle.

2.4 Trend analysis

Users can view the load curve and historical trend curves of voltage, current, voltage deviation, imbalance, flicker, etc. at monitoring points through the platform.

2.5 Diagnostic Report

The system can generate a power quality diagnosis report based on the statistical analysis of the power quality situation at monitoring points.

3. Ankerui Enterprise Microgrid Energy Efficiency System Solution

Smart power plants or virtual power plants are actually a collection of microgrids for numerous electricity consuming enterprises, including distributed photovoltaics, energy storage systems, adjustable loads, car charging piles, etc. They respond to demand fluctuations based on grid load to ensure grid safety and reduce power supply and consumption costs. So a virtual power plant is actually an aggregation of numerous enterprise microgrids.

The AcrelEMS enterprise microgrid energy efficiency system integrates enterprise power monitoring, energy consumption statistics, power quality analysis and governance, intelligent lighting control, monitoring of major energy consuming equipment, charging pile operation management, distributed photovoltaic monitoring, energy storage management and other functions. Users can centrally monitor, dispatch and operate the enterprise microgrid globally and as a whole through a platform, helping enterprises improve power supply reliability, locally absorb new energy generation, improve electricity efficiency, and reduce electricity costs. The functions are shown in Figure 1.

Hardware equipment for enterprise microgrid energy efficiency system

In addition to software, Ankrui also has on-site sensors, edge computing gateways and other equipment for the enterprise's micro grid energy efficiency system, forming a completeThe "cloud edge end" energy internet system, which specifically includes high and low voltage distribution comprehensive protection and monitoring products, online power quality monitoring devices, power quality governance, lighting control, new energy charging piles, electrical fire-fighting solutions, etc., can provide one-stop services for the construction of enterprise micro grid energy efficiency systems. Some equipment is shown in Table 1.

4. Regarding the company

Ankerui Electric Co., Ltd. was established in 2003 and listed on the ChiNext board in 2012 with the code 300286. The company is headquartered in Jiading, Shanghai and is a high-tech enterprise and software company that provides solutions for energy efficiency management and energy safety of enterprise microgrids. It has obtained various certificationscertificateAnd over 600 software copyrights (as of December 31, 2022).

Ankeri has more than 500 R&D engineering and technical talents, focusing on user side energy efficiency systems and energy Internet, has one-stop service capabilities from cloud platform software to terminal components, and has formed a "cloud edge end" energy Internet ecosystem. At present, there are more than 14000 sets of system solutions operating throughout the country. The company has locally configured sales and technical support teams in major cities across the country to quickly respond to customer needs. The e-commerce team faces the country and steadily expands overseas markets. Online and offline combination provides users with a good service experience. The company's existing cloud platforms and system solutions cover power, environmental protection, fire protection, new energy, data centers, intelligent buildings, transportation, municipal engineering and other fields.

The company will adhere to the concept of "innovation, efficiency, unity, and integrity", insist on stable operation and continuous innovation, provide solutions for users' safe, reliable, and efficient energy use, and provide data support for achieving "carbon peak and carbon neutrality".

production base

Jiangsu Ankerui Electric Appliance Manufacturing Co., Ltd., a production base located in Jiangyin City, Wuxi, is a high-tech enterprise in Jiangsu Province. It has a product testing center that has obtained national laboratory certification and accreditation. With the help of an information management system, it provides guarantees for the industrialization and large-scale implementation of the company's products. The newly established Ankerui Microgrid Research Institute is committed to the research and development of enterprise microgrid technology, further providing solutions for users to build safe, reliable, and green microgrid energy management systems.