PROJECT CASE
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Case Sharing | [Rail Transit] Verification of the Effectiveness of the Welding Machine-Specific Filter Compensation Device
Time：
2019-10-19
Customer Name: CRRC Meishan Vehicle Co., Ltd. Harmonic Load: Overhead crane, welding machine Procurement Equipment: Special filter compensation device for welding machine TSCGD The overhead crane and welding machine have strong dynamic loads. After our technical personnel conducted on-site inspections and tested the data from the workshop distribution cabinet, we proposed a dynamic reactive power compensation plan to address the tripping issues of the distribution cabinet in the flatbed factory. This plan aims to resolve the voltage dips and circuit breaker overcurrent tripping caused by the instantaneous startup of the overhead crane and welding machine. Additionally, the device is equipped with remote cloud monitoring capabilities, facilitating real-time monitoring of workshop electricity usage and the operation of the compensation device, ensuring timely warnings and handling of any abnormal situations.
Customer Name:CRRC Meishan Vehicle Co., Ltd.
Harmonic Load:Overhead crane, welding machine
Purchased Equipment:Welding Machine Special Filter Compensation DeviceTSCGD
Project Background
CRRC Meishan Vehicle Co., Ltd. was established onJune 28, 2007, registered in Chongren Town, Dongpo District, Meishan City. The business scope includes R&D, manufacturing, sales, leasing, and technical services of railway freight cars; design and processing of spare parts for rail transit equipment; R&D, manufacturing, and sales of brake machines, fasteners and connectors, special vehicles (operating with permits or approval documents), metal structural parts, atmospheric pressure containers and storage equipment, containers, composite materials products, and various integrated products; metal casting and forging processing; contracting overseas railway vehicle industry projects and domestic international bidding projects.
Electricity Overview (Overhead Crane, Welding Machine)
Main production power equipment includes3 overhead cranes of 20 tons and several three-phase welding machines. Each overhead crane has a rated power of 100kW, and each three-phase welding machine has a rated power of 40kVA. During the welding process with multiple welding machines, when 3 overhead cranes start simultaneously, the large power equipment of the overhead cranes generates a significant amount of reactive power, with the reactive current being about 5-10 times the full load current of the equipment, causing a voltage drop in the workshop distribution system. The increase in reactive current and the temporary voltage drop lead to the total switch of the workshop distribution cabinet tripping due to overcurrent, putting the 20-ton frame lifted by the overhead crane in a suspended state, posing a safety hazard to on-site personnel and causing production losses.
Welding Machine Special Filter Compensation DeviceDesign Plan
The loads of the overhead crane and welding machine are highly dynamic. After our technical personnel conducted on-site inspections and tested the data of the workshop distribution cabinet, a dynamic reactive power compensation plan was proposed to address the tripping situation of the distribution cabinet in the freight car factory caused by the instantaneous voltage drop and circuit breaker overcurrent during the startup of the overhead crane and welding machine. In addition, the device is equipped with remote cloud monitoring capabilities, facilitating real-time monitoring of workshop electricity usage and compensation device operation, allowing for timely warnings and handling of abnormal phenomena.
Welding Machine Special Filter Compensation DeviceEffect Analysis
ThroughWelding Machine Special Filter Compensation Device TSCGDoperation, reactive power reducedto about 175kvar, with current harmonic distortion rate maintained at around 15%, and power factor improved from 0.57 to about 0.98, solving the user's power quality issues.
Partial Operating Data
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Reactive power trend chart of the distribution cabinet before and after the device is put into operation. It can be seen that after the device is put into operation, reactive power is reduced by about 175kvar; | |
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Power factor trend chart of the distribution cabinet before and after the device is put into operation. It can be seen that after the device is put into operation, the power factor improved from 0.57 to about 0.98; | |
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Under the goodpower brand of Guangda Electric, we insist on providing sufficient value returns and feedback to every user who believes in us. To achieve stable product quality, we require Guangda personnel to inject 200% of their craftsmanship. In terms of material selection, we cannot afford mistakes, and in terms of craftsmanship, we do not allow laziness.
Dear customer, please rest assured about our craftsmanship, products, and services. We are committed to becoming a valuableWelding Machine Special Filter Compensation Devicemanufacturer, reactive power compensation and harmonic treatment manufacturer.
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