Our company implements harmonic control at a monitoring point in Yiwu Fotang
- Categories:Shunyang News
- Author:General Manager
- Origin:Ningbo Shunyang Electric Measuring Instrument Co., Ltd.
- Time of issue:2019-04-29
Since the second half of last year, our company has been entrusted by the Yiwu Power Supply Company to implement harmonic control in a district subordinate to the Fotang Town Power Supply Station. The power supply station has repeatedly checked and confirmed that the user caused reactive power exceeding the standard. Yiwu The power supply company recognized it and decided to include it as a governance object in the scientific research project "Distribution Network Harmonic Monitoring and Management Application Research" of Yiwu Power Supply Company Yiwu Transmission and Transformation Engineering Co., Ltd., and implement harmonic governance to improve voltage quality.
After a lot of research and implementation, after installing the active power filters (devices) and governance controllers (harmonic eliminators) at the monitoring points, the power factor P has been read in the Shunyang SYEZ11 multifunctional harmonic monitor on April 11. There has been a noticeable improvement news from today.
Remotely read the data of the SYEZ11 harmonic monitor, analyze the data from 7:00 to 19:00 on the day of 2019.04.16, and in the phase current report of the power quality statistical report, you can see the total current distortion rate of 95%. When the A phase is 0.30%, the B phase is 1.79%, and the C phase is 0.33%, the total distortion rate is less than the limit of 15%. It shows that the harmonics on site have been greatly improved.
Through the harmonic control of this monitoring point, the total current distortion rate has dropped from the original 50%~80% to about 5%, and the line loss rate has reached the qualified standard, which has received a more ideal effect.
Therefore, the same harmonic remediation can be implemented for similar user points in the station area that produce larger harmonics and line losses greater than 7%. It will surely receive better results and create better conditions for reducing power loss and improving voltage quality.