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288 results about "Charged body" patented technology

1000kv extra-high voltage ac non-contact type electricity checking method and apparatus

The invention provides a 1000kV ultrahigh voltage alternating current non-contact-type electroscopy and an electroscope thereof, the hardware part of the electroscope consists of a signal acquisition module, a signal amplification module, a signal processing module, an analog-to-digital conversion and data processing module and an alarm module, the software part thereof is divided into five stages comprising self-check, pre-check, checkup, comparison and alarm; after the self-check is passed and time delay of 3 seconds elapses, a value, which is obtained by performing a data acquisition in 10KHz frequency on the electric field intensity of the working location, is regarded as a reference value for the electroscopy, the inventive reference value is an electric field value of the on-site working location, which effectively enhances the use range and accuracy of the electroscope; the invention implements the electroscopy in terms of field intensity curves of space electric fields and gives a reflection of the size of the electric field via the frequency velocity of acoustic, optical signals for the alarm, which effectually eradicates the interferences from adjacent charged equipment and settles the difficult problem of inferior repetitiveness and low accuracy of the electroscopy result which is resulted from the interference with the space field intensity by charged bodies of the adjacent measured equipment.
Owner:STATE GRID ELECTRIC POWER RES INST

Power distribution net box type transformer environmental parameters on-line monitoring system

The invention relates to a power distribution net box type transformer environmental parameters on-line monitoring system which includes the steps that aiming at any one of box-type transformer substations, the power distribution net box type transformer environmental parameters on-line monitoring system is provided with a plurality of sensors, wherein at least the temperature of a high pressure charged body in the environmental parameters of the box-type transformer substations, the high frequency partial discharge, the temperature and humidity in the box-type substation are monitored correspondingly by the sensors, and the monitored data of the various sensors are received and sent to a front-end data acquisition unit of a monitoring center based on a wired or wireless communication mode. The data processing server device of the monitoring center carries out the storage and processing analysis for the received data to generate a real-time dynamic monitoring curve and produces an audible and visual alarm when the monitored data exceed a set threshold value, and meanwhile the alarm information can notify attendants in the relevant areas in a text message form, so that the time of incident response is shortened and the economic loss is reduced.
Owner:SHANGHAI OUYI INTELLIGENT NETWORK +3

Equipotential access method of alternating current ultra / super high-tension line live-line work and electric potential transferring stick

The invention is a hot-line job equipotential entering method of A.C. extra or ultrahigh voltage transmission line and the electric displacement rod. The method is characterized in that the operating staff wears extra or ultrahigh voltage A.C. hot-line job complete set barrier clothes and accesses the charged body by the insulated delivery vehicle after connecting the electric displacement rod and the barrier clothes, when operating staff is 0.4-0.6m from the charged body, the operating staff use the special electric displacement rod to contact the charged body in order to transfer electric potential and enter the equipotential. The electric displacement rod comprises a lead-in wire 7, a connector 8, a metallic rod 9 and a crampon 10, wherein the lead-in wire 7 and the crampon 10 are connected with two ends of the metallic rod 9 separately, the connector 8 is connected with the other end of lead-in wire 7, the metallic rod 9 is circular and has smooth surface. The invention reduces impulse current substantially, which improves the safety of entering the equipotential, extends the durability of barrier clothes, and improves the working efficiency of hot-line job.
Owner:STATE GRID ELECTRIC POWER RES INST

Self-adaptive butt-joint automatic charger

The invention relates to a charger, in particular to a self-adaptive butt-joint automatic charger. The purpose is to solve the problems that a conventional movable robot cannot be automatically charged, the manufacturing cost of a conventional automatic movable robot charger is high, and control is inaccurate. Two stop dogs are respectively arranged on two sides of the top surface of a charge base of the self-adaptive butt-joint automatic charger, a central rotating mechanism is mounted on the top surface of the charge base, a horizontal moving mechanism is mounted on the top surface of the central rotating mechanism, a charge contact platform is mounted on the horizontal moving mechanism, a positioning guide is mounted at the middle of the mounting surface of the charge contact platform, two charge contact points are respectively mounted on two sides of the positioning guide, the middle of the power-receiving surface of a power-receiving base is provided with a power-receiving positioning socket, two power-receiving contact points are respectively mounted by two sides of the power-receiving positioning socket, a sensor is mounted in the power-receiving positioning socket, and the positioning guide on the charge body can be plugged into the power-receiving positioning socket on the power-receiving base. The self-adaptive butt-joint automatic charger is used for charging movable robots.
Owner:HARBIN INST OF TECH

Solid insulating vacuum ring network cabinet

The invention provides a solid insulating vacuum ring network cabinet comprising at least one wire inlet ring network cabinet and at least one wire outlet ring network cabinet, wherein the wire inlet ring network cabinet is assembled on a cabinet body by a vacuum switch unit through screws so as to form the whole wire inlet ring main unit; the wire outlet ring network cabinet is formed by assembling the vacuum switch unit and a fuse tripping interlocking device on the cabinet body through screws; a fuse cylinder component is arranged at the position in the vacuum switch unit at which a polar column assembling plug is securely sealed. The solid insulating vacuum ring network cabinet has the advantages that harmful substances are not generated during the working process; furthermore, all parts can be reclaimed after achieving the service life; and the environment-friendly requirement is adapted. All charged bodies are placed or arranged in epoxy resin; the electric performance of the ring network cabinet is not affected by external environments such as vapor, dust and the like; and the maintenance quantity is little and the service life is long. As charged bodies are all arranged inthe epoxy resin, semiconductor substance is sprayed outside the epoxy resin; and the induction voltage is grounded; therefore, even when a user contacts with the ring network cabinet, the electric shock accident does not occur, and the safety of equipment is improved.
Owner:SHANGHAI THEHAO ELECTRIC POWER TECH

800kv extra-high voltage direct-current non-contact multichannel distance measurement type electroscope

InactiveCN101819227AEliminate distractionsMeet the safety protection requirements of engineering operationsCurrent density measurementsMeasurement using digital techniquesCharged bodyHigh-voltage direct current
The invention provides a 800kV extra-high voltage direct-current non-contact multichannel distance measurement type electroscope comprising a signal amplification module, a signal processing module, an alarming module, an analog-to-digital conversion and data processing module and an LCD (liquid crystal display) display module, wherein the signal processing module comprises a rectification module, a filtering module, a signal acquisition module, a comparing control module and a distance measurement module, and the signal acquisition module comprises a stator and a rotor. The electricity testing value of the electroscope is the electric field value of the on-site working position, which effectively broadens the use range of the electroscope and improves the accuracy of the electroscope. The electroscope tests electricity by taking a distance value of a working position and a lead to be detected and a field intensity value correspondingly obtained according to the field intensity curve and the variation trend of a space electric field as alarming threshold values, and whether the lead to be detected is charged or not is reflected according to acoustic and light signals of alarming, thereby effectively eliminating the interference of adjacent charged equipment and solving the problems that the repeatability of an electricity testing result is poor and the accuracy is low because of the interference of the charged body of adjacent equipment to be detected on the space field intensity.
Owner:STATE GRID ELECTRIC POWER RES INST

Calculation method for constructing gravitational gradient field of complex body

The invention relates to a calculation method for constructing a gravitational gradient field of a complex body. The method is technically characterized by comprising the following steps of enabling the complex body to be equivalent to a charged insulator, enabling a gravitational field to be equivalent to an electric field, and performing mesh division on a model; calculating a gravitational field between two objects, enabling the density to be equivalent to charge density of a charged body, and multiplying the density by a conversion coefficient to obtain a gravitational field around the complex body; and performing derivation on gravitational components along three coordinate axes in a rectangular coordinate system, regarding the gravitational components as deformation of the objects in three coordinate directions, and calculating out strain generated under the deformation, wherein linear strain corresponds to a linear gravitational gradient, and shear strain corresponds to a cross gravitational gradient. The method realizes calculation of the gravitational gradient around any three-dimensional mass body, is suitable for directive calculation of a self gradient of a gravity gradiometer, a basic gradient of a lab and artificial gradient excitation generated by an experiment apparatus, and lays a solid foundation for gravity gradient inversion and geological interpretation.
Owner:中国船舶重工集团公司第七〇七研究所
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