10results about How to "Improve power supply security" patented technology

The agricultural equipment lithium battery pack with the temperature control structure comprises a box body, lithium batteries arranged at equal intervals are arranged in the box body, the lithium batteries are sleeved with phase change material layers fixedly connected with the lithium batteries, and the phase change material layers are sleeved with two sets of heat exchange pipes arranged at equal intervals; the heat exchange pipe is in a C shape, the two ends of the heat exchange pipe communicate with a water inlet pipe and a water outlet pipe correspondingly, and the front face of the box body is fixedly connected with a water inlet box and a water outlet box which are arranged in a staggered mode. According to the invention, the heat dissipation intensity of different parts of the lithium battery is flexibly controlled according to the heating degrees of different parts of the lithium battery, so that excessive heat dissipation of parts, which are not seriously heated, of the lithium battery is effectively avoided, the temperatures of all parts of the lithium battery are kept within the optimal range, and the working state of the lithium battery is improved.

The invention discloses a power line detection protection device, electric connection equipment and electric equipment, the detection protection device comprises a switch module, an electric leakage detection module, a self-checking path module, a fault response module, a trigger module and an indication module, the self-checking path module comprises a first self-checking unit and a second self-checking unit, the first current-carrying wire, the first self-checking unit, the first shielding conductor structure, the second shielding conductor structure, the second self-checking unit and the second current-carrying wire which are electrically coupled form an open-circuit self-checking path; the fault response module obtains an electric leakage signal or an open circuit signal generated when the open circuit self-checking path is open, and outputs a tripping trigger signal to enable the switch module to disconnect power connection; the indicating module is electrically coupled between the second self-checking unit and the second current-carrying wire; the feasibility and flexibility of electric leakage detection and shielding structure open circuit detection of the power line can be enriched, the power supply safety of the power line is improved, and the power consumption of the detection protection device is reduced.

The embodiment of the invention discloses an equipment on-shelf recommendation method and device, equipment, a storage medium and a program product. The equipment racking recommendation method comprises the steps that basic data and equipment information of equipment to be racked are acquired, and an equipment racking target and constraint conditions are determined, and the constraint conditions at least comprise the condition that under the condition that the equipment to be racked is connected to a candidate rack, the equipment to be racked is connected to the candidate rack; the estimated load power of each stage of power supply equipment in the power supply path to which the candidate rack belongs is smaller than or equal to a corresponding preset power threshold value; and based on the equipment shelving target and the constraint condition, according to the basic data and the equipment information of the to-be-shelved equipment, generating an equipment shelving scheme by using an optimization algorithm. By implementing the technical scheme of the embodiment of the invention, the safety of equipment racking can be improved.

The invention discloses a detection protection device of a power line, electric connection equipment and electric equipment. The power line comprises a first current-carrying wire and a second current-carrying wire. The detection protection device comprises a switch module, an electric leakage detection module, a fault response module, an overvoltage detection module and a trigger module. The electric leakage detection module comprises a first shielding conductor structure and a second shielding conductor structure. The fault response module obtains an electric leakage signal or an open circuit signal generated when the open circuit self-checking path is open, and outputs a tripping trigger signal to enable the switch module to disconnect power connection; the overvoltage detection module is used for generating an overvoltage signal and outputting the overvoltage signal to the fault response module when detecting that the voltage between the first current-carrying wire and the second current-carrying wire is too large, so that the fault response module outputs a tripping trigger signal, and feasibility and flexibility of electric leakage detection of a power line and open circuit detection of a shielding structure can be enriched. And the overvoltage input by the power supply is detected to trigger tripping, so that the power supply safety of the power line is improved.

The utility model discloses a voltage regulation system of hydroelectric generation relates to hydroelectric generation technical field, including hydroelectric generation control module, for hydroelectric generation and three -phase controllable rectification, output module is used for with the electrical equipment connection, output sampling module is used for voltage sampling and when the signal of sampling is greater than the set charging threshold value, control battery control module carries out energy storage work, battery control module is used for energy storage and power supply, voltage regulation module, voltage sampling and when the signal of sampling is greater than first overvoltage threshold value, control hydroelectric generation control module step -down, overvoltage judging module is used for when the signal of voltage regulation module sampling is greater than second overvoltage threshold value, step -down regulation module carries out step -down processing to hydroelectric generation control module. The utility model discloses voltage regulation system of hydroelectric generation can gradually step -down processing to hydroelectric generation control module through voltage regulation module, when the electric energy voltage is higher, accelerates the step -down rate, improves power supply stability and security.

This invention provides a frequency-to-analog safety barrier, comprising a voltage conversion circuit, a transformer coil drive circuit, a transformer, a first AC voltage rectification and filtering circuit, a frequency signal processing circuit, a NAMUR signal processing circuit, an NPNPNP signal processing circuit, a frequency processing circuit, an MCU control circuit, a TTL output interface, an isolation chip, a square wave processing circuit, a filtering circuit, a DC output circuit, and an alarm relay. The voltage conversion circuit is connected to the transformer via the transformer coil drive circuit. The transformer supplies power to the hazardous and safe zones via the first AC voltage rectification and filtering circuit. Multiple intrinsically safe terminals in the hazardous zone are connected to the frequency processing circuit via three signal processing circuits. The frequency processing circuit outputs to the MCU control circuit. The MCU output sequentially passes through the TTL interface, the isolation chip, the square wave processing circuit, and the filtering circuit to the DC output circuit. This invention achieves frequency signal to analog quantity conversion and safety isolation, increasing system stability.

The embodiment of the utility model discloses an overhead cable breakage monitoring system, which is used for improving the effectiveness of overhead cable breakage monitoring. The scheme provided by the utility model comprises a cloud platform; a plurality of monitoring modules distributed on the aerial cable, wherein any monitoring module comprises a voltage sensor, a microcontroller, a communication module and a standby power supply; wherein the voltage sensor is electrically connected with an aerial cable and is used for acquiring three-phase voltage of the aerial cable; the microcontroller is in communication connection with the voltage sensor and is used for generating a disconnection judgment result corresponding to the three-phase voltage according to a preset disconnection judgment rule, and the disconnection judgment result carries information of a disconnection point position; the communication module is in communication connection with the microcontroller and is used for reporting the disconnection judgment result of the three-phase voltage to a cloud platform; the standby power supply is used for supplying power to the monitoring module under the condition that the overhead cable is powered off; and the cloud platform is used for controlling the overhead cable to be powered off according to the disconnection point positions indicated by the disconnection judgment results reported by the plurality of monitoring modules.

The utility model discloses a dual power supply switching type power distribution cabinet, which relates to the field of power distribution cabinets, and is characterized in that the power distribution cabinet comprises a power distribution cabinet main body, a dual power supply switching device is arranged at the upper part of the back of the power distribution cabinet main body, and one interface of the dual power supply switching device is connected with an external power supply. One interface is connected with a storage battery on the power distribution cabinet main body, and the storage battery is also connected with an external power supply, so that normal operation of power distribution cabinet equipment can be guaranteed, and chain reactions such as industrial equipment shutdown, business system paralysis, medical equipment interruption and data loss caused by sudden power failure are avoided; and meanwhile, a secondary fault of a regional power system is effectively prevented through a dual-power seamless switching mechanism, and the reliability and the safety of power supply are improved.

This application discloses a power supply circuit and system, and a mobile device, belonging to the field of electronic technology. The circuit includes a pre-charging unit and multiple power distribution branches. The positive input terminal of each power distribution branch is connected to the input terminal of the pre-charging unit, and the positive output terminal of each power distribution branch is connected to the respective output terminal of the pre-charging unit. The input terminal of the pre-charging unit is also used to connect to the positive power supply terminal of a power source, and the positive output terminals of each power distribution branch are used to connect to loads. The pre-charging unit outputs pre-charge energy to the target load when pre-charging is required for the target load corresponding to the target power distribution branch. The target power distribution branch remains off when the voltage corresponding to the target load is less than a preset threshold, and turns on when the voltage of the target load is greater than or equal to the preset threshold, to supply power to the target load. This application can effectively suppress surge currents or inrush currents that may occur when capacitive loads are powered on, thereby improving the safety and reliability of power supply.

This utility model relates to the field of wind turbine generator box-type transformer technology, specifically to a high-voltage side power supply monitoring device for a box-type transformer based on a voltage transformer. The device includes: a first voltage side, a box-type transformer, a second voltage side, a UPS, a dual-power switching device, and a power consumption side connected in sequence. The first voltage side includes: a first voltage cable inlet and a first voltage switch connected in sequence, and a voltage transformer. The first voltage winding of the voltage transformer is connected to the first voltage cable inlet, the second voltage winding of the voltage transformer is connected to the dual-power switching device, and the first voltage switch is connected to one end of the box-type transformer. This utility model improves the power supply reliability of wind farms, achieves efficient automated management, quickly responds to faults, reduces safety hazards, ensures stable operation, and promotes the intelligent transformation of the wind power industry.