Cradle to Gate
Identity ID
21386bca-8555-4e03-8e79-048f0383927f
Materials
Associated ID
e59b82a0-e7b9-4d8d-bebd-ed706827d2f9
Included activities starts
Included activities ends
Description
The product represented by this dataset is a shunt capacitor with polypropylene film as the main inter-electrode dielectric, with a functional unit of 1 unit (measured in kg) and an expected service life of about 30 years; the dataset considers typical voltage levels (such as 11/sqrt(3) kV) and capacity specifications (such as 334 kvar). This product is mainly manufactured from raw and auxiliary materials such as polypropylene film, insulating impregnant, metal casing and bushings through their acquisition and transport, as well as core manufacturing processes such as metallized film slitting, winding, metal spraying, welding, vacuum drying, impregnation, assembly and sealing, ageing and final testing. The key upstream raw materials of this product are polypropylene film, metallized electrodes, insulating impregnant, metal casing and bushings, etc., and the downstream is mainly applied to reactive power compensation and power quality improvement in industry, distribution networks and power stations. As for the system boundary, infrastructure such as the manufacture of production equipment and plant construction is not included within the dataset boundary. In terms of data sources and data processing, the data are mainly formed by merging materials from multiple publicly available production projects in China.
Activity Description
The system boundary covers the polypropylene-film shunt capacitor from cradle to gate, starting with raw-material inputs and ending when the finished shunt capacitor leaves the factory. The main stages, in sequence, are acquisition and transport of raw materials such as polypropylene film, metallized electrodes, insulating impregnant, metal housings, and bushings; metallized-film slitting; winding; metal spraying; welding; vacuum drying; impregnation; assembly and sealing; aging; and final testing.
Process Description
Parallel capacitors refer to capacitors connected in parallel in the power grid and are mainly used to compensate for inductive reactive power to improve the power factor. They are mainly used to improve the power quality of the power grid and reduce power loss. They are commonly used in high-power situations such as industries, distribution networks, and power stations. This article describes a parallel capacitor with polypropylene film as the main medium between the poles. It is mainly composed of polypropylene film, metallized electrodes, insulating impregnating agent, metal shell and bushing. It is in the form of bench-mounted or cabinet-mounted capacitors. It has an expected service life of about 30 years. It is widely used in reactive power compensation and power quality improvement in industry, distribution networks and power stations.
Time period
2017
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The production of polypropylene-film shunt capacitors mainly includes metallized-film slitting, winding, metal spraying, welding, vacuum drying, impregnation, assembly and sealing, aging, and final testing. After the metallized film is slit and wound, the element is metal-sprayed and welded, then vacuum-dried and impregnated before assembly and sealing. Finished polypropylene-film shunt capacitors are obtained after aging and successful final testing.