Electric Power Research Institute, China Southern Power Grid

Hubei University of Technology

China Southern Power Grid

Handan Puxin Electric Power Technology Co., Ltd.

Lei Jia

Mingli Fu

Wenbo Zhu

Bin Feng

Xiaolin Li

Yunpeng Zhan

Baojun Hui

Shuai Hou

Yifan Zhang

Lingmeng Fan

Gang Liu

Hao Liu

Hong Rao

Xiaoxing Zhang

Kun Wan

Shuangshuang Tian

Yalong Li

Guozhi Zhang

Guangke Li

Guoguang Zhang

Zhaodi Yang

Yi Zhang

Jie Liu

Licheng Li

Ruifa Feng

Hansheng Cai

Jian Shi

Qi Mei

Ruihan Qi

Shangmao Hu

Minchuan Liao

Taishan Hu

Lu Qu

Dibo Wang

Yongjie Nie

An antioxidant addition device for a 500 kV cross-linked polyethylene insulating material includes a heating hopper module and a heat-insulation conduit module. The heating hopper module includes an inlet port, a heating jacket, a material bin, and a filter screen. The heat-insulation conduit module includes a liquid metering pump, a stainless steel liquid-conduit, a heat-insulation unit, and an outlet port. The antioxidant is added into the material bin through the inlet port, heated in the material bin to a liquid phase antioxidant, filtered through the filter screen, then metered by the liquid metering pump, then passed into the stainless steel liquid-conduit, and finally discharged through the outlet port for use.

Antioxidant addition device and method for 500 kV cross-linked polyethylene insulating material

The present application provides a high-voltage cable insulation material continuous extrusion processing characteristic evaluation and optimization method and apparatus. The method comprises: continuously extruding a material under test as a melt, measuring and recording an inlet pressure P, a mass growth rate w, and the diameter D' of a melt sample strip, and obtaining apparent shear viscosity η(t) (step A1); obtaining an outlet expansion rate δ (step A2); recording and displaying curves η(t) and δ(t), and treating the time corresponding to an increase of a set percentage on the curves as a cross-linking starting time TX (step A3); selecting a reference sample for testing, and determining a cross-linking reaction starting time TS according to η(t) and δ(t) curves of the reference sample (step A4); and defining an index α according to Tx and Ts.

High-voltage cable insulation material continuous extrusion processing characteristic evaluation and optimization method and apparatus

A deep well grounding electrode and a deep well grounding electrode monitoring system. The deep well grounding electrode comprises a feeding rod, a feeding head, a steel casing, a temperature measurement optical cable, an exhaust pipe, and a drainage cable; the steel casing is located in the well body; the feeding head is located at the bottom of the steel casing; the feeding rod, the temperature measurement optical cable, the exhaust pipe, and the drainage cable are located in the steel casing; the temperature measurement optical cable extends from a bottom end of the feeding rod to a monitoring module; the exhaust pipe extends from the bottom end of the feeding rod to the ground; and one end of the drainage cable is welded on the feeding rod, the other end extends to the monitoring module, and the drainage cable is fixed to the feeding rod by bolts.

Deep well grounding electrode and deep well grounding electrode monitoring system

Disclosed are a tungsten hexafluoride preparation method and apparatus based on photoelectric synergy. A photocatalyst and metal tungsten are sequentially filled in a discharge area of a plasma reactor in a direction of gas entry, and the discharge area of the plasma reactor is irradiated with light at the same time; the background gas generates a large amount of plasma in the discharge area, SFundergoes decomposition under the synergistic effect of photocatalysis and plasma, SFis decomposed to generate fluorine atoms and low-fluorine sulfides such as SFand SF. The generated fluorine ions, SF, SFand low-fluorine sulfides further react with metal tungsten to generate WFspecialty gas, which not only realizes the utilization of fluorine resources of SF, but also replaces highly toxic fluorine gas with non-toxic SFexhaust gas in the plasma reactor for reaction, thereby ensuring safe operation and low energy consumption.

Tungsten hexafluoride preparation method and apparatus based on photoelectric synergy

The present invention provides a polypropylene cable protective layer and a preparation method thereof. The polypropylene cable protective layer sequentially includes a dielectric layer, a buffer layer and an insulating layer from the inside to the outside, and the thickness of the dielectric layer accounts for 5%˜12% of the thickness of the polypropylene cable protective layer; the thickness of the buffer layer accounts for 17%˜25% of the thickness of the polypropylene cable protective layer; the dielectric layer, the buffer layer and the insulating layer are respectively obtained by the wrapping of a polypropylene film A, a polypropylene film B and a polypropylene film C. The polypropylene cable protective layer of the present invention forms a dielectric gradient, and realizes the improvement of the insulation strength and voltage level of the power cable, and the increase of the transmission capability.

Polypropylene cable protective layer and preparation method thereof

Growing community of inventors

Guangzhou, China

Lei Jia