cable news: breakdown and preventive measures of dc high voltage cable-非凡电子娱乐

(1) strengthen the quality inspection of cable.

shanghai area to improve the quality of cable manufacturing,

measures taken by the manufacturers in the factory,

in the process of monitoring found a lot of problems,

receive good results.

beijing area has been carried out in front of the joint cable quality inspection,

found a lot of problems, but there are limitations of this measure,

is the scene can only be carried out inspection,

can not understand the internal insulation.

to this end, beijing is now a regular sampling of the cable,

the method of inspection by the shanghai power cable,

to ensure the quality of cable.

at the same time, cable manufacturers should strengthen quality management,

improve quality consciousness,

strict testing and inspection before delivery,

eliminate unqualified products into the market.

(2) improve the quality of cable installation.

to improve the quality of cable installation, we must attach great importance to this issue,

the use of professional construction team

and strengthen the technical level and quality consciousness of the connector installation personnel,

strictly in accordance with the installation process is an important way to reduce cable accidents.

when the cable is laid, the traction should be used to prevent the side pressure from turning too high,

joint installation should pay attention to the use of good technical measures to ensure the installation level,

summing up in construction.

(3) the adoption of new test methods.

in the completion of the xlpe cable to avoid dc withstand voltage test,

method of using series resonance or vlf,

if there is no corresponding equipment can also be used 24h no-load operation mode.

(4) improve the depth of design drawings. design is the guidance of construction,

the improvement of design level is the key to improve the level of cable engineering,

design units to strengthen exchanges and learning,

fully consider the possibility of cable system in long term safe operation,

in order to ensure the long-term safe operation of cable system.

(5) increase operation monitoring.

many people think that the cable system is free of maintenance,

this view is wrong.

before because there is no good means of monitoring,

cable operators can only strengthen inspections,

infrared temperature measurement is now in use in some places,

in some places, the temperature monitoring system is installed at the joint,

partial discharge technology began to enter the practical stage.

all operating departments should be based on the actual situation of the development or use of the corresponding detection means,

do early prevention.