43results about How to "Realize live work" patented technology

The invention, which belongs to the technical field of distribution hot-line work, relates to a hot-line work method for a 10-kV distribution line and equipment. The method comprises: an operator places an insulating shielding tool at a left-side charged conductor and grounding body by using an insulating operation bar and an insulting shielding tool of a right-side charged conductor and grounding body is installed by using the same method; the operator returns to the ground and an insulating trestle ladder is moved to the ground corresponding to an operating position; the operator climbs the insulating trestle ladder again, approaches the operating position, and carries out hot-line work by using the insulating operation bar; during the working process, the operator keeps a minimum safety distance of at least 0.6m with an electrified body and keeps a minimum safety distance of at least 0.4 m with the ground; and the whole working process is monitored by a specially-assigned person. According to the invention, the method is suitable for hot-line work for a 10-kV distribution line and equipment in narrow space; and on the premise that the safety of the operator is ensured, high-efficiency work is carried out under the circumstance that the power of the 10-kV distribution line and equipment is not interrupted.

The invention discloses a method for replacing a vibration damper. In the operation method, a bracket and a vibration damper claw hook for replacing the vibration damper are adopted for supporting, so that labor force is reduced, and the labor intensity of operators is reduced; and meanwhile, a bolt is locked and detached by using an electric bolt locking device, so that safety and reliability are achieved, and the function of remote operation can be realized.

The invention discloses a full-insulated lightning arrester which comprises an insulated seat body with a cable wiring device, wherein a lightning arrester socket and a disconnector interface are arranged on a body of the insulated seat body. The lightning arrester socket is provided with a live wire spigot connected with the cable wiring device as well as a zero line spigot connected with the disconnector interface; in the pluggable lightning arrester, pins are led from a lightning arrester insulated casing and are spiced with the live wire spigot and the zero line spigot of the lightning arrester socket; in the disconnector, a power grind connecting terminal and a grounded terminal are led from the disconnector insulated casing; the power grid connecting terminal is connected with the disconnector interface; and a zero line of the pluggable lightning arrester is led from the grounded terminal. The full-insulated lightning arrester disclosed by the invention can be used for better protecting a circuit and resisting water and rain and is favorable in insulating effect, safe and reliable in work and strong in capability of adapting to the environment; the electrified operation can be realized without worrying about electric shock conditions; if the full-insulated lightning arrester has faults, the disconnector actively acts, so that the full-insulated lightning arrester is separated, the power grid is protected, and further, the power grid can normally supply power; and in addition, the monitoring and timely replacement are conveniently carried out.

The invention discloses a high-voltage line distributed capacitance measurement device and a measurement method thereof. The measurement device includes a phase voltage measurement circuit for measuring the phase voltage of a phase line to be tested and a ground capacitance current measurement circuit based on a bias capacitance Cf; The voltage measurement circuit is connected to the phase line to be tested; the ground capacitance current measurement circuit includes a bias capacitor Cf and a current detection unit for detecting the current flowing through the bias capacitor Cf, one end of the bias capacitor Cf is connected to the phase line to be tested and Its other end is grounded; Its measuring method comprises the steps: 1. Line phase voltage measurement before the bias capacitor is connected; 2. Line phase voltage measurement after the bias capacitor is connected; Carry out measurement; 4. Calculation of distributed capacitance. The invention has the advantages of reasonable design, convenient wiring, simple measurement method and accurate measurement result, and can measure the distributed capacitance of the high-voltage line under the electrified state, and the measurement process is safe and reliable.

The invention provides an automatic device for crossing a high-voltage transmission line lightning conductor quakeproof hammer and a crossing method of the automatic device. The automatic device comprises a main frame, two L-type rocker arms installed on the main frame, a driving mechanism driving the two L-type rocker arms to swing, and a control system controlling the driving mechanism to act. One end and the bent position of each L-type rocker arm are provided with a supporting wheel and a walking wheel through pin shafts respectively. When the automatic device moves on an overhead ground line, after the control system automatically detects that the quakeproof hammer exists, the automatic device can automatically cross an obstacle in front of the automatic device through control over lifting up and placing down of the supporting wheels, and tools and small devices are rapidly conveyed to the designated position to be maintained; when the automatic device collides with the quakeproof hammer, the tools and insulation ropes do not need to be repeatedly taken down, the risk of manual operation is reduced, a worker does not need to make contact with the overhead ground line, hot-line working can be achieved, and safety and efficiency of the maintenance work of the electric transmission line are improved.

The invention provides a transformer substation contact grinding mechanism, a grinding robot, a system and a method. With the transformer substation contact grinding mechanism, the grinding robot, thesystem and the method adopted, the problem that live overhaul operation cannot be carried out during contact grinding, and the problem that operation tools cannot be replaced in real time for seriously-rusted disconnecting switch contacts can be solved, and transformer substation contact grinding efficiency is improved. The transformer substation contact grinding mechanism comprises a grinding part, a control part and a connecting part. The grinding part comprises a grinding head module and a cleaning module; the grinding head module is used for grinding a to-be-ground disconnecting switch disconnecting link contact; the cleaning module is used for cleaning the ground disconnecting switch disconnecting link contact. The control part is configured to receive the grinding operation ending signal of the grinding head module, switch to the cleaning module and start cleaning work. The connecting part is configured to connect the grinding part with a robot mechanical arm, and adjust an angle between the grinding part and the robot mechanical arm within a preset angle range so as to match the position of the to-be-ground disconnecting switch disconnecting link contact. Therebefore, the live working of the transformer substation contact grinding mechanism is realized.