Huawei Technologies Co., Limited

Shenzhen Poweroak Newener Co., Ltd

Tsinghua University

China Mobile Communications Group Co., Ltd.

China Mobile Communication Co.,ltd Research Institute

Byd Company Limited

Huawei Digital Power Technologies Co., Ltd.

China Agricultural University

Hui Ma

Yongqiang Gao

Zhuo Chen

Yinghui Yu

Xiangzhu Yin

Yongbo Zhang

Yonghong He

Liang Liu

Bo Lin

Jing Lan Chen

Dongmei Zhang

Hua Zhang

Hao Wu

Jing Chen

Ke Wang

Zhipeng Wu

Xiaohua Tang

Lu Zhang

Jianjun Liu

Aiqin Zhang

Geng Qin

Jianhua Lei

Xueying Hou

Zhiyong Du

Ran Liao

Xiaojie Huang

Xiaoyu Bi

Ting Ke

Hao Meng

Guoshi Liu

Yongqiang Lu

Fan Li

Lipin Cheng

Zhenhua Chen

Songyang Yao

Aiqing Zhang

Nan Zeng

Xiaoyu Jiang

Jintao Chang

Zhihua Guo

Honghui He

Wentao Cang

Shuqing Sun

Xianren Li

Yi Chang

Pengyun Ji

Zhirun Li

Qiaoxiang Liu

Zhongping Meng

Yongliang You

Chunpei Zhong

Dan Wen

Yongzhuang Zhou

Cong Xia

Rongheng Hu

Haiyang Li

Huan Zhang

The present application relates to a photovoltaic fault monitoring system, method and a storage medium. The photovoltaic fault monitoring system includes at least one group of photovoltaic arrays, each including multiple stages of photovoltaic modules connected in series and a processing module connected with the photovoltaic arrays. Each stage of photovoltaic modules includes a photovoltaic unit and a bound monitoring unit. The monitoring unit process and output a received communication signal when the photovoltaic unit is powered, while directly output the received communication signal when the photovoltaic unit loses power. The processing module acquires the communication signal from each monitoring unit to determine if any photovoltaic unit is faulty.

Method and system for photovoltaic fault monitoring, and storage medium

In accordance with an embodiment, an energy storage system includes energy storage container that a temperature control system, a battery cluster, and a controller. The controller determines a specified temperature of the temperature control system corresponding to a maximum difference between an available capacity of the battery cluster and a power consumption of the temperature control system as a target temperature. The determination of the specified temperature is based on: a correspondence between the available capacity of the battery cluster and a plurality of different specified temperatures in a specified temperature set of the temperature control system, and a correspondence between the power consumption of the temperature control system and the plurality of different specified temperatures in the specified temperature set of the temperature control system. The temperature control system is configured to adjust a temperature inside the energy storage container to the target temperature.

Energy storage system, temperature control method, and photovoltaic power generation system

A parallel operation connecting device includes a control switch, a concentrator, a first connector and a second connector; the concentrator is connected between an alternating current power supply and the first connector and the second connector to form two identical alternating current lines, and on-off of both the two alternating current lines is controlled by the control switch; the control switch is configured to simultaneously switch on the two alternating current lines when the first connector is connected to the first energy storage inverter and the second connector is connected to the second energy storage inverter and simultaneously switch off the two alternating current lines when the first connector is disconnected from the first energy storage inverter and/or when the second connector is disconnected from the second energy storage inverter.

Connecting device for parallel operation of energy storage inverters

An SOC estimation method includes calculate an electric quantity value of fixed step size for the mobile power supply, and then sequentially superimpose a unit electric quantity step by step to calculate an accumulated electric quantity from the last moment of SOC change, then compare the absolute value of the accumulated electric quantity with the electric quantity value of the fixed step size to determine whether the SOC value is added/subtracted the fixed step size or kept unchanged, and acquire an initial value of the accumulated electric quantity at the next moment. In above method, the division operation can be replaced by 'if judgment' and addition/subtraction operations in actual programming, which greatly reduces the calculation amount for SOC estimation, thereby greatly reducing requirements for chip operational power and peripheral resources and equipment energy consumption, improving the speed and computing stability of SOC estimation.

SOC estimation method, mobile power supply and readable storage medium

The disclosure discloses a composition containing melatonin as an effective ingredient, and its application in improving DHI production performance and improving milk quality. The composition containing melatonin as an effective ingredient according to the present disclosure can significantly reduce the somatic cell count in milk and improve milk quality. Under the conditions of different seasons, ages, and lactation periods, the administration of the composition containing melatonin as an active ingredient according to the present disclosure can significantly reduce the somatic cell score of cow milk (p<0.01), increase the protein content and lactose content in milk, and meanwhile reduce the fat content and urea nitrogen content in milk. In summary, the composition containing melatonin as an effective ingredient according to the present disclosure can improve the quality of milk and increase the efficiency of dairy cow breeding.

Composition for improving milk quality and preparation method and application thereof

A power switch circuit includes a switch circuit, a solar photovoltaic panel and a detection circuit and connected with the solar photovoltaic panel and the switch circuit respectively. The solar photovoltaic panel is configured to provide an electrical signal to the detection circuit, the detection circuit is configured to detect whether the power in the electric signal exceeds a preset threshold, and when the power exceeds the preset threshold, the detection circuit outputs a first control signal to the switch circuit to turn on the switch circuit; when the switch circuit is turned on, the solar photovoltaic panel supplies power to the load through the switch circuit, and the switch circuit feeds back a second control signal to the detection circuit so that the detection circuit stops working.

Power switch circuit and power switch

An adaptive control method for multiple inverters in parallel and a system with multiple inverters in parallel. The method average distribute the active power of each inverter unit by means of acquiring state information of inverter units, adjusting a reference voltage output by each of the inverter units based on a deviation between the output active power and the average active power, which is calculated by the state information, re-acquiring the state information and calculating a voltage component difference and a current component difference between the inverter units based on the adjusted reference voltage, and then adaptively adjusting the virtual impedance of the slave inverter unit according to the voltage component difference and the current component difference so that the output impedance of the slave inverter unit and master inverter unit is matched.

Adaptive control method for multiple inverters in parallel and system with multiple inverters in parallel

A connector includes a housing provided with an accommodating cavity and a first opening communicating with the accommodating cavity; a circuit board disposed in the accommodating cavity and provided with a first signal connection point; a connection head disposed on the housing and including a second signal connection point for external device connection; and a switch disposed in the first opening, being respectively connected to the first signal connection point and the second signal connection point. The switch is used for controlling the connection or disconnection between the first signal connection point and the second signal connection point. In the above-mentioned manner, the connector and a heavy load may be disconnected by the switch when the connector is pulled out, so that risks of instant ignition and short circuit caused by the connector pulled out may be avoided, and safety accidents may be reduced.

Connector and electronic device

A leakage current detection circuit is used for detecting a leakage current, includes a main winding, an auxiliary winding, a detection module and a signal output module used for outputting a pulse signal with pulse signals with positive and negative alternations, wherein the main winding is connected to a leakage current detection end and coupled to the auxiliary winding, and the auxiliary winding is respectively connected to the signal output module and the detection module. During the auxiliary winding in a preset state and a leckage current occurred, the leakage current coupled to the auxiliary winding is superimposed with the pulse signal, so that the current signal detected by the detection module is greater than the current signal detected when the pulse signal with pulse signals with positive and negative alternations is not applied.

Leakage current detection circuit, method and leakage current detector

A communications method and apparatus, where the method includes: acquiring, by a mobility management entity (MME), information of a user equipment (UE); determining, by the MME according to the information, whether the UE satisfies a first preset condition; if the UE satisfies the first preset condition, generating, by the MME, a first indication, where the first indication is used for instructing a serving gateway (SGW) to retain first data or discard first data, and the first data is downlink data of the UE; and sending, by the MME, the first indication to the SGW.

Communications method and apparatus

A processing method of an adaptation layer of an integrated access and backhaul node and an adaptation layer are provided. The method includes: mapping, by the adaptation layer of the integrated access and backhaul node, a received first data packet to a first bearer or channel between the integrated access and backhaul node and a first node; transmitting, by the adaptation layer of the integrated access and backhaul node, the first data packet to the first node; wherein the first node is a downstream integrated access and backhaul node relative to the integrated access and backhaul node and/or a UE accessing the integrated access and backhaul node, or the first node is an upstream integrated access and backhaul node relative to the integrated access and backhaul node or a donor node of the integrated access and backhaul node.

Processing method of adaptation layer of integrated access and backhaul node and adaptation layer

Embodiments of the present invention provide a cell selection and reselection method and apparatus, so as to resolve a problem existing in the prior art that repeated reception of data by using an existing cell selection and reselection method causes a waste of resources and an increase in power consumption. The cell selection method includes: measuring signal quality of a cell, and acquiring a coverage class offset value that is preconfigured by a network side for the cell; and selecting a target cell according to the signal quality of the cell and the acquired coverage class offset value of the cell.

Cell selection and reselection method and apparatus

The present disclosure discloses an uplink (UL) signal transmission method, apparatus and system, for effectively reducing channel resource overhead while protecting UL channel access opportunities. An uplink signal transmission method implemented on a UE side comprises: a UE determining, from at least one predefined candidate transmission position according to a preset rule, a transmission start position for transmitting an uplink signal; and beginning transmitting of the uplink signal at the determined transmission start position. In an uplink signal transmission method implemented on a base station side, an uplink scheduling grant (UL grant) is sent to schedule a UE to perform uplink transmission, and an uplink subframe sent by the UE is received; and a transmission start position of the uplink signal is determined in the uplink subframe.

Uplink signal transmission method, apparatus, system, communications device, and storage medium

Embodiments of the present invention disclose a paging method and a device. The method includes: first, determining, by a base station, a radio superframe identifier of a paging message that is of user equipment and that is in a physical layer frame, where the radio superframe identifier is used to indicate a radio superframe in which the paging message is located; then, determining a first location identifier of the paging message in the radio superframe.

Paging method and device

Embodiments of the present invention relate to the field of communications, and provide a communications method and apparatus, which can solve a problem in the prior art that, in order to save power, when a mobility management entity (MME) delays delivering a paging message or a UE uses a long discontinuous reception (DRX) period, an exception may occur in a serving gateway (SGW). The method includes: acquiring, by an MME, information of a UE (S); determining, by the MME according to the information, whether the UE satisfies a first preset condition (S); if the UE satisfies the first preset condition, generating, by the MME, a first indication, where the first indication is used for instructing an SGW to retain first data or discard first data, and the first data is downlink data of the UE (S); and sending, by the MME, the first indication to the SGW.

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Shenzhen, China

Hui Ma