PROJECT CASE
Guangda Electric Is A Professional Organization Dedicated To Solving Power Quality Problems Of Users
How can ceramic enterprises solve the issues of severe voltage harmonic distortion and low power factor in their electricity usage?
Time：
2019-07-17
The low-voltage capacitor compensation cabinet products produced by Guangda Electric - the intelligent filtering compensation module ZBMGD series can solve users' electricity problems. Guangda engineers, together with the users' equipment engineers, conducted case studies to analyze the power quality issues present during the operation of low-voltage capacitor compensation cabinets in the ceramic industry.
Industrial enterprises are major consumers of energy in China, accounting for about 70% of the country's total energy consumption. Among them, nine key energy-consuming industries, including steel, non-ferrous metals, coal, electricity, petroleum and petrochemicals, chemicals, building materials, ceramics, and papermaking, account for more than 60% of the total industrial electricity consumption.
In recent years, I have visited many ceramic enterprises to test the electricity usage of different ceramic companies and understand their load characteristics and power quality issues.
1,Foshan Sunshine Ceramics Co., Ltd.-On-site matching pureLow Voltage Capacitor Compensation CabinetOperation Analysis:
(1) The main electrical equipment includes ball mills, polishing machines, waxing machines, and coal chemical furnaces.
(2) The cable length from the distribution room to the ball mill and coal chemical furnace is 200 meters, with a front-end voltage of 412V and an end voltage of 340V.
(3) The total harmonic distortion of voltage is 19%, the total harmonic distortion of current is 22%, and the power factor is 0.66.
(4) The original pureLow Voltage Capacitor Compensation Cabinet, due to severe harmonics, could not be put into operation normally, leading to frequent low voltage protection.
2. Guangda Electric DesignLow Voltage Capacitor Compensation CabinetSolution Analysis:
(1) From the user's perspective, it is necessary to raise the voltage to above 380V and achieve a power factor of 0.90.
(2) Solve the serious harmonic voltage distortion,Low Voltage Capacitor Compensation Cabinetfor safe and stable operation.
(3) Instantaneous reactive power demand when electrical equipment starts, to avoid sudden voltage drop issues.
(4) Dust is particularly severe,Low Voltage Capacitor Compensation Cabinetand it must be able to operate in harsh environments.
Regarding the above two issues, Guangda engineers and user equipment engineers studied and analyzed:
(1) Upgrade and transform within the originalLow Voltage Capacitor Compensation Cabinetwithout power interruption;
(2) A fast switch is needed that can operate in an 18% harmonic voltage environment to solve the instantaneous reactive power demand of the equipment;
(3) Each branch can be independently protected, isolating the dust effect, and the protection of a single branch does not affect the operation of the entire cabinet;Low Voltage Capacitor Compensation Cabinet(4) Through testing, Guangda Electric's intelligent filter compensation module ZBMGD series products can solve the user's electricity problems.
3. Guangda Electric Design
Operation Effect:Low Voltage Capacitor Compensation Cabinet(1) The local end voltage was raised from 340V to 380V, and the protection was stable, solving the under-voltage protection tripping issue;
(2) The total harmonic distortion of current was reduced from 22% to 7%, solving the harmonic impact on equipment issues;
(3) The natural power factor was improved from 0.64 to above 0.90, enhancing the utilization rate of electrical equipment and production time;
Improving energy efficiency and power quality is what Guangda has always been committed to providing as an optimization solution for power systems. We have a professional team that can provide customized solutions based on the specific needs of customers, bringing more stable and high-quality power support to customers' production and operations. If you have related issues, please feel free to contact us.
提高能效，改善用电质量是光达一直致力于为客户提供的电力系统优化解决方案，我们拥有一支专业的团队，可以根据客户的具体需求，提供定制化的解决方案，为客户的生产和经营带来更加稳定和高质量的电力支持。如果您也有相关问题，欢迎随时与我们联系。
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