Shenzhen Poweroak Newener Co., Ltd

South China Sea Institute of Oceanology

Geng Qin

Hui Ma

Jianhua Lei

Hua Zhang

Xiangzhu Yin

Yongbo Zhang

Wei Luo

Xin Wang

Xiaojie Huang

Qiang Lin

Yanhong Zhang

Huixian Zhang

Qi Jiang

Zhongping Meng

Yongliang You

Chunpei Zhong

Dan Wen

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

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

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

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 switch detection circuit includes a controller, a first DC isolation module, a second DC isolation module, and a signal conditioning module connected to the controller. The controller is connected to a first end of an external switch via the first DC isolation module and the signal conditioning module is connected to a second end of the external switch via the second DC isolation module. The controller is configured to output a pulse signal, and transmit the pulse signal to the second DC isolation module via the first DC isolation module and the external switch. As a current flowing out from the second DC isolation module, the signal conditioning module outputs a feedback signal to the controller and the controller counts according to the feedback signal and detects the working state of the external switch according to the count value.

Switch detection circuit, method, and switch detector

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

The present invention discloses a breeding method for obtaining heterosis in lined seahorses, which comprises the following steps: S1, selecting parents of lined seahorse from populations with great differences in genetic background; S2, intensified rearing the parents before pregnancy; S3, matching and breeding the parents of lined seahorse from different geographical populations according to complete diallel cross method; S4, finely nursing pregnant seahorses; S5, respectively collecting all postlarvae (filial generations) hatched by each breeding group in one week; S6, rearing the filial generations; and S7, comparing survival rate and growth performance of filial generations. The present invention, via hybridization of different geographical populations to obtain lined seahorse, makes effective use of heterosis. Survival rate and growth rate of filial generations are apparently enhanced compared to that of those filial generations without hybridization. Such method enhances genetic diversity of lined seahorses and accelerates breeding of fine strain of lined seahorses.

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Shenzhen, China

Geng Qin