30 results about "Interruption Duration" patented technology

The invention provides a reliability evaluation method for an active power distribution network based on switch boundary subarea division. The reliability evaluation method comprises dividing the area containing the active power distribution network into nine subareas according to the installation positions of switches; according to reliability calculating expressions corresponding to different fault subareas, calculating the duration of power interruption, which is caused by a fault point corresponding to a feeder line of a fault, of a load point, the calculation comprising: calculating the interruption fault rate and interruption duration of the fault point in areas without power supply of a distributed power source, and calculating the interruption fault rate and interruption duration of the fault point in areas with power supply of the distributed power source; and measuring system reliability through calculating annual fault interruption rate and annual average interruption time of the load point, specially, measuring system reliability by adopting a system average interruption frequency index SAIFI and a system average interruption duration index SAIDI. The method of the invention reduces analysis amount, can accurately evaluate reliability of the power distribution network containing a distributed power source and provides reliability evaluation basis for development of Chinese active power distribution networks in the future.

A method and system for indicating a status of a load of a sub-system in a marine vehicle where the load is controlled by a switch provided on a steering wheel of the marine vehicle. The method comprises: providing a switch controller in the steering wheel for controlling communications between the steering wheel and the marine vehicle; providing a switch for the load on the steering wheel; providing a status indicator for the load on the steering wheel; detecting an activation of the switch by the switch controller; the switch controller transmitting a command to the load in the marine vehicle in response to the activation; providing a load controller in the marine vehicle, the load controller controlling a power input to the switch controller, the load controller receiving the command and activating the load in response to the command; detecting a status of the load; interrupting a power input to the switch controller for a predetermined interruption duration corresponding to the detected status; the switch controller activating the status indicator to indicate the detected status of the load.

The invention discloses a distribution network planning scheme evaluation data processing system which comprises an economic index processing module based on whole life cycle cost, a reliability index processing module based on a minimal path method, and a flexibility index processing module based on maximum power supply capability. The economic index processing module based on the whole life cycle cost is used for taking the investment cost, operation and maintenance cost, life period and the like as input data, calculating and processing the data and outputting the whole life cycle cost and traditional financial evaluation indexes; the reliability index processing module is used for taking the planning scheme structure, equipment parameters and the like as input data, outputting the system average interruption frequency and other indexes of load nodes and the equivalent mean interruption duration on the system side and the other indexes; and the flexibility index processing module based on the maximum power supply capability is used for outputting the maximum power supply capability, the network transfer capability and the other indexes. Finally, comprehensive evaluation of multiple indexes is realized by adopting a fuzzy mathematics comprehensive evaluation module. Compared with the prior art, the distribution network planning scheme evaluation data processing system disclosed by the invention has the advantages of comprehensiveness and practicality.

The invention discloses a QoE driven video bit rate adaptive and resource allocation joint algorithm under an LTE network. A QoE prediction model based on video segment features and playback information is established; and five factors such as video segment bit rates, initial delay, interruption duration, interruption times and quality fluctuations are taken into consideration. According to the prediction model, subjective quality of experience when users watch videos can be accurately predicted. A base station global uniform deciding video request and resource allocation joint algorithm provided by the invention comprises the steps that a base station determines a user set to which network resources need to be allocated according to buffer information fed back by the users; current to-be-allocated RBs are found, and QoE and QoE gain values of the videos of quality versions employed by user requests are computed when the RBs are allocated to all users; and the current RB is allocated to the user with the maximum gain value, until all RBs are allocated completely. According to the algorithm, channel condition of the users is taken into comprehensive consideration, and on the premisethat network resources are limited, the subjective quality of experience of watching the videos by all users in the LTE network is improved.

The invention relates to a distribution-automation-based power supply reliability evaluation method for a distribution system. All fault states, which may occur, of a system are listed; an element fault result analysis is carried out by using a section as a minimum unit of load transferring and each line element as an object, thereby obtaining element fault interruption time; and then reliability index calculation is carried out to obtain a power supply reliability index of a distribution system. The element fault interruption time consists of fault searching time, fault region isolation time, and fault repairing time; the reliability index calculation includes calculation of a system average interruption frequency index (SAIFI) with a unit of times/household.year, a system average interruption duration index (SAIDI) with a unit of hour/household.year, a customer average interruption duration index (CAIDI) with a unit of hour/interruption customer.year, and an ASAI with a unit of percentage. According to the invention, the adaptability to an analysis of reliability of different wiring modes is high and the fault searching time and isolation time become accurate.

The invention relates to the technical field of electronics, and discloses a zero crossing detection device and method and an electrical appliance. The zero crossing detection device includes a zero crossing detection circuit which is used for comparing a full wave signal and a direct current signal generated by rectifying an alternating current and rectifying and filtering the alternating currentrespectively to obtain the pulse of a corresponding comparison signal, and a controller which is used for receiving the pulse of the comparison signal to be triggered to interrupt, calculating the interruption duration between two interruptions near the zero crossing point of the full wave signal, and delaying the interruption duration by half to get a zero crossing point when detecting that nextinterruption happens. The zero crossing point is judged accurately according to the comparison signal. The method and device are applicable to multiple application scenarios with different voltages and frequencies.

A method is disclosed for detecting power interruption duration of an electronic device. The method can include establishing a curve model of linearly synthesized values of temperature sensor readings versus time; after power-on, acquiring each of the initial temperature values by respective temperature sensors mounted on the electronic device, and transmitting the temperature initial values to a microprocessor; calculating a linearly synthesized value of the temperature sensor readings of the electronic device according to a power-on duration for this time and a stored curve model, and storing the linearly synthesized value of the temperature sensor readings as a basis for calculating the power interruption duration thereafter. When the electronic device is powered on again after power interruption, a linearly synthesized value of the temperature sensor readings according to the power-on time for this time can be calculated, and used for calculating the power interruption duration thereafter.

The embodiment of the invention provides a method for preventing service interruption and network equipment. Middle network equipment actively detects whether the middle network equipment is subjected to protocol attack according to a detection period; because the detection period is shorter than protocol conversion interruption duration, the middle network equipment informs upstream network equipment that the middle network equipment is subjected to the protocol attack before service is actively removed due to abandonment of keep-alive messages, and the upstream network equipment timely switches the service to a standby path before service interruption, so that before the service interruption of the middle network equipment due to the protocol attack, the upstream network equipment switches the service from a main path to the standby path to avoid the service interruption.

The embodiment of the invention provides a link recovery method and device and equipment. The method comprises the steps that if quality of a link between first equipment and second equipment does notsatisfy a preset condition, the first equipment detects whether the link is recovered or not within timing duration of a first timer, thereby obtaining a detection result, wherein the timing durationof the first timer is the interruption duration of link interruption resulting from user movement; and the first communication equipment determines whether to perform link recovery operation or not according to the detection result, wherein the link recovery operation comprises at least one piece of operation of beam tracking operation, beam refinement operation and redo-beamforming operation. According to the embodiment of the invention, the condition of blindly recovering the link through the link recover operation under a scene that the quality of the link is reduced transiently due to human blockage and then is recovered can be avoided, namely, comprehensive judgment can be carried out through combination of the practical condition that the quality of the link is reduced, and the linkrecovery accuracy is greatly improved.

The invention discloses a power-off protection method and device, relates to the technical field of power-off protection, and aims at solving the problems that control of the prior art is inaccurate and the reliability is low. The power-off protection method comprises the steps as follows: power interruption information of a motor is continuously monitored through a power-off protection module; when the power interruption duration is smaller than 80ms, the power-off protection module does not start protection and the motor normally works after being powered up; when the power interruption duration is greater than 80ms, the power-off protection module starts protection, the motor does not work after being powered up, and the power-off protection module returns to initialization; and if a motor switch is in an off state, the motor does not work and the motor can be started by turning off the motor switch and then turning on the motor switch. By the power-off protection method and device, whether the motor is normally powered off or abnormally powered off can be accurately judged; the work efficiency is not affected; and the power-off protection method and device are safe and reliable.

The invention belongs to the technical field of communication interference, and particularly relates to an onboard communication interference route modeling method and an interference efficiency evaluation method based on a radiation source. Aiming at a one-transmitting and multi-receiving ground communication net platform, two relatively good interference routes are designed, wherein an arbitrary point in the runway-type route can satisfy the domain suppressing conditions while the interference interruption duration in unit time is reduced as much as possible. Finally, the interference efficiency evaluation method is provided. The method includes the following steps that the parameters of the two routes are designed; sampling points are selected in the routes; the evaluation indexes of each point are calculated; the evaluation index values of the whole routes are obtained through the evaluation index value of each sampling point; the weighted sum is obtained after the evaluation indexes are normalized.

The present invention discloses an endoscope dedicated for substation maintenance, comprising a mainframe, a stepping motor and a control module that are fixedly installed inside the mainframe, an endoscope flexible conduit connected to an outer side of the top of the mainframe, and an acquisition probe assembly installed at an end part of the endoscope flexible conduit. The control module is connected to the acquisition probe assembly by using a data transmission wire. A power shaft of the stepping motor is connected to a steel wire flexible transmission shaft, and the steel wire flexible transmission shaft is inside the endoscope flexible conduit. According to the endoscope, an operation is simple, an observation direction is conveniently adjusted in a using process, and an observation speed is fast. The maintenance endoscope can be used to enter a transformer device from a narrow opening of the device, to observe parts that cannot be directly observed by naked eyes. The endoscope can be used to effectively improve inspection efficiency of a maintainer for defects such as corrosion, rusting, crack, and abnormality of the parts inside the device. Endoscope inspection replaces device disassembling inspection, so that interruption duration can be reduced, and an operating risk can be lowered.

The invention relates to a load interruption control device for a power system. The device comprises a timer, a controller, a plurality of load control terminals, a plurality of triggers, and a plurality of comparators. Each load control terminal controls the power equipment on one power supply line of the power system, and is correspondingly equipped with one comparator and one trigger. The load control terminals are connected with the controller. The controller is connected with a first input end of each trigger through the timer. The controller is connected with a second input end of each trigger through the corresponding comparator. The output ends of the triggers are connected with the controller. The controller receives load interruption information issued by a supply station, calculates interruption duration corresponding to each load control terminal and response capacity corresponding to each load control terminal, and makes each load control terminal perform an interruption operation through the timer, the triggers and the comparators according to the interruption duration and the response capacity.

The invention relates to a device for repeatedly splicing an outdoor cable terminal station. The device comprises an upright steel tube, and is characterized in that a bottom flange is arranged at the bottom of the upright steel tube; a crawling ladder and a cable are arranged along the upright steel tube; a protective tube is wrapped outside the cable; the protective tube is fixed through protective tube fixed supports; the cable is fixed through cable fixed supports; the protective tube fixed supports and the cable fixed supports are installed on the upright steel tube respectively, and the cable fixed supports are positioned above the protective tube fixed supports; a horizontal supporting component is installed on the top of the upright steel tube; a cable head support plate is installed on one side of the horizontal supporting component, and a supporting insulator is arranged on the other side of the horizontal supporting component. The device is simple, compact and reasonable in structure, convenient for outdoor construction and installation, small in occupied space, low in cost, little in influence on an original circuit and short in interruption duration, has relatively high safety and economy, and can be widely applied to expansion and extension of the outdoor cable terminal station.

The invention discloses a touch board suitable for a handcart-type switch cabinet. The touch board comprises a plurality of contacts arranged on a transverse board, wherein each of the contacts comprises a dynamic contact and a static contact that are matched with each other; a guide groove is arranged on the side wall of each of the static contacts; the tail end of each of the contacts is fixed with the transverse board; each of the dynamic contacts is connected with an outer ring of each of the static contacts by a screw matched with each of the guide grooves in a sleeving manner; the outer ring of each of the static contacts is sleeved with a spring. Through an improvement on a contact structure of the contacts, the toughness of the contacts is enhanced, and the cooperation degree of operation is improved, so that an accident of deformation of the dynamic contacts caused by a switch cabinet valve mechanism can be prevented; through adoption of a hollow structure in the contacts, the cooperation condition of the dynamic contacts and the static contacts can be observed conveniently, the abnormal condition is timely discovered conveniently, and maintenance personnel can make a timely adjustment conveniently. Due to the fixed height and polar distance of the contacts, the touch board is suitable for most of polar distances of switches and has wide applicability, the maintenance quality is improved, the maintenance cost can be greatly lowered, the interruption duration of equipment can be greatly shortened, and the existing maintenance process is effectively perfected and complemented, therefore, the touch board has strong practicability.

The invention discloses an automatic error correcting control method and device and electrical equipment. The method comprises the following steps of setting a first preset clock as a working clock, and controlling operation of the load; triggering interruption operation every time after a preset interruption duration is operated, starting timing operation according to a second preset clock, and then controlling the load to continuously operate; obtaining the timed time monitored by timing operation when next interruption operation is triggered; and determining whether a system clock of a control chip is abnormal or not according to the timed time and the preset interruption duration. By means of the method, whether the system clock of the control chip is normal or not can be effectively monitored, in regard to the situation that abnormal strong interference is applied to the electrical equipment in operation, the clock of the control chip of the equipment is disordered, so that the electrical equipment operates in an out of control mode, timely controllable safe shutdown restarting can be realized, potential safety hazards are eliminated, the anti- interference capability of the product is improved, and the product safety is improved.

The invention discloses a data resource scheduling method, a first autonomous system and a second autonomous system. The data resource scheduling method comprises the steps that address resources of the first autonomous system are divided into a first route and a second route in advance, wherein the first route is used in an interface used in the first autonomous system in a process in which the first autonomous system does not switch the interface, and the second route is used in a to-be-switched interface temporarily in a process in which the first autonomous system switches the interface; then, when the first autonomous system switches the interface, the to-be-switched interface can be switched by preventing the interface from using the first route, and the to-be-switched interface is allowed to use the second route to transmit data to be transmitted to the first autonomous system temporarily in switching, so that to-be-transmitted data on a path corresponding to the to-be-switchedinterface is cached and transmitted, then data transmission interruption duration in interface switching is shortened effectively and packet loss rate is lowered.

The present invention relates to the technical field of mobile communications, particularly to an SRVCC switching time measuring method and device, used to solve the technical problem in the prior art of the incapability of measuring SRVCC switching interruption time. The terminal in an embodiment of the present invention can start timing at the start time of voice interruption during service switching, and stop timing at the end time of the voice interruption during the service switching, thus obtaining the interruption duration of the SRVCC switching, and solving the technical problem unable to be solved in the prior art; in addition, the operation is simple and easy to realize.

The invention relates to a tool for the live replacement of an over-voltage protection device of a distribution line. The distribution line comprises a conducting wire, a cross arm, an insulator and the over-voltage protection device, wherein the over-voltage protection device and the insulator are arranged in parallel between the conducting wire and the cross arm. The tool comprises an insulating bracket and an insulating operating rod. The insulating bracket comprises a bracket body and a fastening component. The lower end of the bracket body is fixed on the cross arm of the line through the fastening component, and the upper end of the bracket body jacks the conducting wire. The insulating operating rod comprises a chuck, a fastening bolt, an upper cover and a lower cover. One end of the chuck penetrates through the upper cover, and then is fixed. The lower cover is connected with the upper cover through the fastening bolt. After the bracket body jacks the conducting wire, the chuck clamps the over-voltage protection device. Compared with the prior art, the tool has the advantages of ensuring live work, shortening interruption duration, increasing a power supply volume, and the like.

The invention provides a low-voltage intelligent power distribution box by using a Beidou emergency communication technology. The low-voltage intelligent power distribution box comprises a power distribution box body and a Beidou communication device installed in the body, wherein the Beidou communication device is wirelessly connected with a Beidou power distribution terminal monitoring platformthrough a Beidou satellite communication system; the Beidou communication device is provided with a power-off detection circuit; and the power-off detection circuit detects whether a power supply circuit in the power distribution box is powered off. According to the low-voltage intelligent power distribution box by using the Beidou emergency communication technology of the invention, a power supply can be automatically triggered and activated to enter a working state when a disaster causes a power failure to provide temporary power for the Beidou communication device and quickly build an emergency communication channel, and the problem of transmission back of data such as site conditions of the disaster, personnel information and the like is solved through quick positioning of Beidou so asto shorten rescue time and interruption duration, quickly save lives of people and properties of people and reduce the loss to the minimum.

The invention discloses a method for rapidly and accurately searching the location of a single-phase earth fault and detection equipment. Any switch on a main circuit is disconnected firstly when thesingle-phase earth fault occurs; the detection equipment is used to measure the resistance of the two sides of the disconnected switch; if the resistance of one side is relatively low, then another switch is selected and disconnected within the range of the side and the detection equipment is used to measure until a branch of the single-phase earth fault is determined, any switch on the branch isthen disconnected, and the above steps are repeated until the minimum range of the location of the fault is determined. The method shortens the time for processing the single phase earth fault, effectively solves the problems of difficulty in searching the single phase earth fault and long processing time, shortens the interruption duration of a user, also improves the working efficiency, reducesthe risk of trial line charging, and is suitable for the rural areas where electric power circuits are relatively scattered.

The invention discloses a bicycle safety monitoring and controlling device in the technical field of intelligent traffic management, and aims at solving the problem that in the prior art, the unsafe behavior of a person riding a bicycle with one hand or two hands off cannot be effectively monitored and prevented, and then traffic safety accidents are possibly caused. The device comprises an information acquisition unit, a main control unit and a riding control unit; the main control unit obtains a two-hand grip signal through the information acquisition unit, and brakes the vehicle through theriding control unit according to the interruption duration of the two-hand grip signal.