Digital transformer station secondary system

The invention relates to a digital transformer station secondary system which comprises a background monitor workstation, a remote workstation, a protecting device, a measure and control device, a switch device and an electronic mutual inductor. The system has the main technical characteristics that the background monitor workstation, the remote workstation, the protecting device and the measure and control device are connected onto all-station network by an optical fiber interface; the measure and control device is a local measure and control device which is connected with data of the electronic mutual inductor through another optical fiber interface and connected with outside input data by an I/O interface. The system combines station control layer network and process layer network into the all-station network, so as to lead the network of the system to be better simplified, be convenient for the network configuration of a digital transformer station, save the investment of a digital ...

Method for identifying bacterial wilt resistivity of solanaceous crops

Digital transformer station secondary system

The invention relates to a digital transformer station secondary system which comprises a background monitor workstation, a remote workstation, a protecting device, a measure and control device, a switch device and an electronic mutual inductor. The system has the main technical characteristics that the background monitor workstation, the remote workstation, the protecting device and the measure and control device are connected onto all-station network by an optical fiber interface; the measure and control device is a local measure and control device which is connected with data of the electronic mutual inductor through another optical fiber interface and connected with outside input data by an I/O interface. The system combines station control layer network and process layer network intothe all-station network, so as to lead the network of the system to be better simplified, be convenient for the network configuration of a digital transformer station, save the investment of a digital transformer ...

Application of potato auxin response gene StSAUR30231 in inhibition of enzymatic browning of fresh-cut potatoes

The invention discloses application of a potato auxin response gene StSAUR30231 in inhibition of enzymatic browning of fresh-cut potatoes, and belongs to the technical field of molecular genetics. The nucleotide sequence of the StSAUR30231 gene is as shown in SEQ ID NO. 1, and the amino acid sequence coded by the StSAUR30231 gene is as shown in SEQ ID NO. 2. According to the invention, the StSAUR30231 gene is connected to an expression vector, agrobacterium is utilized to infect and transform potatoes, and data shows that the anti-browning capability of the potatoes can be obviously improved by overexpression of the StSAUR30231 gene. Meanwhile, a homozygous mutant of the gene is obtained through a CRISPR-Cas9 technology, the result shows that browning of fresh-cut potatoes is remarkably reduced through overexpression of StSAUR30231, and the browning resistance of the mutant is remarkably lower than that of a wild type. The StSAUR30231 gene disclosed by the invention can provide a theoretical ...

Online three-layer synchronous anti-error locking system

The invention relates to an online three-layer synchronous anti-error locking system which comprises a background monitor workstation, a remote workstation, a measure and control device and an intelligent control unit, wherein the background monitor workstation and the remote workstation are connected with station control layer network; the measure and control device is simultaneously connected with the station control layer network and process layer network; the intelligent control unit is connected with the process layer network; and the background monitor workstation and the measure and control device are internally provided with anti-error locking logical units; the system has the main technical characteristics that the background monitor workstation is connected with the measure and control device by the station control layer network, so as to realize synchronization of the anti-error locking logical units; the intelligent control unit is also provided with an anti-error locking connection ...

Online three-layer synchronous anti-error locking system

The invention relates to an online three-layer synchronous anti-error locking system which comprises a background monitor workstation, a remote workstation, a measure and control device and an intelligent control unit, wherein the background monitor workstation and the remote workstation are connected with station control layer network; the measure and control device is simultaneously connected with the station control layer network and process layer network; the intelligent control unit is connected with the process layer network; and the background monitor workstation and the measure and control device are internally provided with anti-error locking logical units; the system has the main technical characteristics that the background monitor workstation is connected with the measure and control device by the station control layer network, so as to realize synchronization of the anti-error locking logical units; the intelligent control unit is also provided with an anti-error locking connection ...

Intelligent voltage selection device of digital transformer station

The invention relates to an intelligent voltage selection device of a digital transformer station, comprising a bus I, a bus II and a primary electrical device, wherein the bus I and the bus II are respectively connected with a first switch K1 and a second switch K2 which are respectively connected with the primary electrical device; the intelligent voltage selection device also includes a busbar voltage merging unit, a circuit spacing intelligent operation box, a circuit spacing merging unit and a GOOSE switching device. The intelligent voltage selection device is simple in structure, safe and reliable, and has the function of selecting automatic and manual operation; the operation at other intervals can not be influenced by invalid voltage selection at any internal, so that the problem of voltage selection of the digital transformer station can be solved; the device is applicable to the applicable occasions adopting an electronic type mutual inductor or GOOSE network, thus being the voltage ...

Spring thrust blocking-wheel device

The invention discloses a spring thrust blocking-wheel device. The spring thrust blocking-wheel device comprises a first support, a second support, a blocking wheel slide seat arranged between the first support and the second support, a blocking wheel fixed to the blocking wheel slide seat, at least one guide rod, wherein the first support and the second support are fixedly installed on a base and are connected through two guide shafts, the blocking wheel slide seat penetrates through the guide shafts, one end of the guide rod is fixed to the blocking wheel slide seat, the other end of the guide rod movably penetrates through the first support, a spring penetrates through the guide rod, and two ends of the spring are respectively fixed to the blocking wheel slide seat and the first support. The spring thrust blocking-wheel device is simple in structure, easy to manufacture and convenient to maintain and is suitable for a rotating body device, and device cost is greatly reduced.