Depth analysis of wind power grid-connected power quality monitoring scheme

The National Energy Administration vigorously advocated the construction of green and new energy. Major energy companies responded positively to the national call for new energy construction and accelerated the development of the wind power industry. Wind power grid-connected power grids were acquired in Inner Mongolia, Northeast China, Yunnan-Guizhou, coastal islands, and Xinjiang. Large-scale application. The E8000 power quality online monitoring device independently developed by Guangzhou Zhiyuan Electronics Co., Ltd. relies on excellent performance to provide professional and reliable power quality online monitoring solutions for many wind power projects.

Project details:

In wind power projects, wind power has characteristics such as randomness, intermittency, and non-schedulability, and power quality parameters such as voltage and power of wind power generating units will fluctuate. Therefore, power quality monitoring before grid connection is particularly critical. The E8000 on-line monitoring device for power quality provides comprehensive protection for power quality monitoring of various types of wind farms prior to grid connection and becomes a powerful shield for clean power grids.


The “PQS Power Quality Monitoring System” independently developed by Guangzhou Zhiyuan Electronics Co., Ltd. centrally monitors and manages power quality data at each site. The entire monitoring system of the project is divided into two layers: monitoring equipment layer and monitoring background. The system structure is shown in the figure:

test analysis:

The power quality monitoring equipment is mainly installed in the front end of the boosting grid to realize the continuous monitoring of the power quality of each booster station, and uploads the collected data to the back-end server of the main station through the network, and uses the “PQS power” independently developed by Zhiyuan Electronics. "Quality monitoring system" analyzes and manages the power quality of each booster station and implements the following functions:

1. Real-time display of power quality data:

When on-site duty personnel perform duty inspection, they can check the power quality data of each booster station in real time, analyze the power quality status of each booster station before grid connection, and complete the inspection work smoothly to ensure safety. , efficient and stable grid connection.


2. Real-time alarms of power quality abnormal events When the abnormal events occur in the monitoring site, the alarms are notified at the first time, and the scheme can be set to automatically remind the relevant departments to conduct incident analysis and investigation.


3, generate reports in line with the national standard, power supply units for data analysis and archiving.


Technical advantages:

1. The "Power Quality Measurement and Evaluation Method for Wind Turbine Generators" (GB/T20320-2013) formulated by the National Standards Committee was formally implemented on October 1, 2014. The power quality monitoring devices E6000 series and E8000 independently developed by Guangzhou Zhiyuan Electronics The series took the lead in adopting the new standard.

2, voltage, current measurement accuracy of the highest standards of the entrepreneurial industry, reaching "0.1%."

3. Capture, trigger recording and alarm of transient events such as voltage dips, voltage transients, voltage short interruptions, and inrush currents.

4, voltage and current harmonics, interharmonics and high frequency components in full compliance with wind power grid technology standards.

5, accurate measurement of voltage fluctuations and flicker.

Certification authority:


With the efficient cooperation of the sales team of Zhiyuan Electronics Market, the E8000 power quality online monitoring device has been highly recognized by major integrated energy companies for its high-precision real-time monitoring, safe and reliable performance, and expert-level power quality monitoring programs. With its professional and reliable solutions, Zhiyuan Electronics assists the country's new energy construction. At the same time, we will continue to promote and lead the development and upgrade of China's power measurement instruments. We believe that because of our existence, the world will be different.

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