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48results about How to "Avoid switching operations" patented technology

Polar inertial navigation method based on horizontal wandering coordinate system

ActiveCN104215242ASolve non-applicable problemsSatisfy sailing requirementsNavigation by speed/acceleration measurementsLow latitudeGeographic coordinate system
The invention discloses a polar inertial navigation method based on a horizontal wandering coordinate system. The method includes the steps: building a horizontal earth ellipsoid coordinate system, a horizontal geographic coordinate system and the horizontal wandering coordinate system, setting a traditional geographic coordinate system of initial navigation time as an initial horizontal wandering coordinate system and performing mechanical layout by taking the horizontal wandering coordinate system as a navigation coordinate system of a strap-down inertial navigation system; solving the problem of strap-down algorithm failure based on the geographic coordinate system due to meridian convergence in polar regions based on the inertial navigation layout mode of the horizontal wandering coordinate system. Besides, mechanical layout is performed in wandering azimuth at low latitudes, the internal integrity of a global navigation resolving algorithm is ensured by combining the modes, switching logic design of different latitudes and the transformational relationship between parameters of different navigation coordinate systems are avoided in the strap-down inertial navigation system, and complicated physical platform switching is avoided in a platform inertial navigation system.
Owner:SOUTHEAST UNIV

Application program control method and device, electronic equipment and medium

The invention relates to an application program control method and device, electronic equipment and a medium. The method is applied to the electronic equipment; the electronic equipment at least comprises a first operating system and a second operating system, the first operating system is in a foreground running state, and the second operating system is in a standby state. the method comprises the steps that a first operating system displays a first identification list, wherein the first identifier list comprises identifiers of application programs contained in the second operating system; the first operating system sends transmission information to a second operating system under the condition that a first input for the target identifier is received, the transmission information comprises the target identifier and/or application information of a target application corresponding to the target identifier, and the target identifier belongs to a first identifier list; the second operating system runs the target application program based on the transmission information. The electronic equipment can run the application programs in the second operating system when the first operating system runs in the foreground, so that the switching operation of the operating systems is reduced, and the use efficiency is improved.
Owner:ANHUI HONGCHENG OPTO-ELECTRONICS CO LTD

Dielectric loss on-line monitoring device for 35kV high voltage parallel connection power capacitor group

The invention discloses a dielectric loss on-line monitoring device for a 35kV high voltage parallel connection power capacitor group. The device includes first to ninth current sensors, a current transformation circuit, a voltage transformation circuit, an analog-to-digital conversion module, a microprocessor, a display, a keyboard and a power module, and has the beneficial effects that by use of the device, the running state of the power capacitor group can be known without a power cut, and adverse effects of an equipment power cut on clients and power supply reliability are reduced. The dielectric loss on-line monitoring device in the invention well conforms to operation and overhaul conditions of a power capacitor group, thereby improving monitoring effectiveness; the device can reflect the running state of the power capacitor group in real time, plays a very good role in discovering hidden dangers in time, preventing power supply accidents, and ensuring safe power supply, and overcomes blindness brought by a traditional preventive test; and one-time FFT computation can obtain harmonic wave values of all orders of two channels, computed values are reduced, and engineering requirement for speediness, accuracy and real-time analysis in power quality monitoring are well met.
Owner:STATE GRID CORP OF CHINA +1

Zero-flashing low-voltage distribution system and operation method thereof

The invention discloses a zero-flashing low-voltage distribution system and an operation method thereof. The zero-flashing low-voltage distribution system comprises a first power supply, a second power supply, an emergency bus, a second dual-power automatic changeover switch or a solid-state changeover switch, wherein the first power supply and the second power supply are connected with two ordinary buses in a switching station respectively; one end of the emergency bus is connected with a mobile emergency power supply and the first power supply separately through a first dual-power automaticchangeover switch; the other end of the emergency bus is connected with a static energy storage uninterruptible power supply at a user side; the second dual-power automatic changeover switch or the solid-state changeover switch is in load connection with a user. The zero-flashing low-voltage distribution system and the operation method thereof have the advantages that the power supply switching operation of the dual-power automatic changeover switches at a load side under the fault is avoided, thereby solving the problem of load flashing caused by voltage sag during power supply switching, andsolving the problem of voltage fluctuation; if the static energy storage uninterruptible power supply breaks down or is not replenished by the power supplies before a battery runs out, the power supplies are switched to a right circuit for power supply, and sensitive load flashing caused by the voltage sag can occur during power supply switching.
Owner:STATE GRID BEIJING ELECTRIC POWER +1

Insulating operating rod

The invention discloses an insulating operating rod which comprises an operating rod body, a current detection module and an alarm module which are fixedly arranged on the operating rod body, and a processing module which is connected with the current detection module and the alarm module. The processing module controls the alarm module to send out an alarm signal when the current value detected by the current detection module exceeds a preset value. When an electric power worker holds the insulating operating rod by hand to execute the power failure switching operation by mistake, a high-voltage isolation knife switch is disconnected firstly. Since a high-voltage circuit breaker is not disconnected, the current detection module detects a current signal which flows through the high-voltageisolation knife switch and transmits the current signal to the processing module. The processing module controls the alarm module to emit an alarm signal. The operating rod body can be bent and locked by arranging an execution mechanism, so that an electric power worker is reminded of an operation error and cannot continue to execute an error operation. Therefore, the insulating operating rod caneffectively prevent electric power workers from mistakenly executing switching operation. The safety coefficient of an electric power construction site is improved.
Owner:GUANGDONG POWER GRID CO LTD +1

A distribution network power load balancing system

The invention discloses a power load balancing system for a power distribution network. The power load balancing system comprises a control master station and a plurality of commutation devices for switching access phases; when the power load of the power distribution network is unbalanced, the control master station is used for determining a phase switching pair and a corresponding adjustment quantity value, making the commutation devices which do not provide load devices with built-in magnetic movement parts with electricity in a source phase in the phase switching pair, selecting the marked commutation devices requiring phase switching in the source phase, selecting unmarked commutation devices requiring phase switching in the source phase if the marked commutation devices are not enough, wherein the sum of the power load of the selected commutation devices is equivalent to the adjustment quantity value, so that the power load of the power distribution network is balanced; and the control master station controls the selected commutation devices to switch the access phases into a target phase in the phase switching pair. Reduction and avoidance of commutation vibration and noise generated by the load devices, with the built-in magnetic movement part, of clients are facilitated, stable operation is kept, and harmonic interference with the power distribution network is reduced.
Owner:广州尚航信息科技股份有限公司
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