Zacco Norway AS

An ocean-bottom node (1) includes a node housing (2) having an interior main cavity defined by a wall and opposite first and second ends; and one or more insert elements configured to be removably inserted into the main cavity. The insert elements and the main cavity have complementary shapes and dimensions, wherein the one or more insert elements provide internal structural support to the node housing when arranged in the main cavity. The insert elements include a structural element that prevents the node wall from deflecting inward when the node housing is subjected to compressive forces and can include an interior space configured to house any of batteries, electronics, data storage, and/or ballast, sensor, or other component. The ocean-bottom node can be a seismic node, holding one or more geophones and ancillary components.

A marine seismic source includes plural impulsive source elements arranged in a three-dimensional pattern having a width in an x direction, a length in a y direction, and a depth in a z direction, wherein the x, y, and z directions are mutually orthogonal. The source elements may be configured to be towed in a body of water such that the x direction corresponds to a crossline direction, the y direction corresponds to an inline direction, and the z direction corresponds to a vertical direction. The pattern of source elements has at least one vertical cross sectional profile that defines a curve, which widens the range of angles over which the source emits acoustic energy at higher frequencies. In some embodiments, the source elements may include marine sparker source elements.

The present application provides a fan mounting assembly and a power device, and the fan mounting assembly includes a mounting bracket and a fan support. The mounting bracket is arranged on a side of the power device; and the fan support is connected to the fan and secured to the mounting bracket by means of a detachable connection structure. The detachable connection structure includes a limiting structure and a locking structure, and the limiting structure is configured to restrict the fan support from moving relative to the mounting bracket in a first direction. The mounting bracket has a supporting surface for supporting the fan support, and the first direction is perpendicular to the supporting surface. The locking structure is configured to lock the fan support to the mounting bracket on a side of the mounting bracket away from the power device. Since the locking structure is located on the side of the mounting bracket away from the power device, the operation space is more sufficient and it is more convenient to operate the locking structure, and the detached fan support is located in a relatively spacious place, so it may be more convenient for the disassembly and assembly as well as maintenance of the fan.

The present disclosure provides a self-networking method for a module controller, and related devices, to improve the self-networking efficiency for the module controller. The self-networking method includes: obtaining a PLC link quality value between each module controller and a power converter and obtaining a PLC link quality value between the module controller and other module controller of the multiple module controllers; dividing the multiple module controllers into at least one module controller category based on the PLC link quality values, where each module controller category includes at least one candidate module controller, and the candidate module controller indicates a module controller having an actual physical connection with the power converter; and networking the candidate module controllers in the at least one module controller category by category to obtain a module controller network, where the module controller network includes multiple networked module controllers.

The present disclosure relates to the technical field of renewable energy, and provides a self-networking method for a module controller, and a related apparatus, to improve the self-networking efficiency for the module controller. The method includes: controlling a power converter to search for multiple initial module controllers; determining multiple candidate module controllers from the multiple initial module controllers, where the multiple candidate module controllers are obtained by filtering the multiple initial module controllers based on a communication link quality between the power converter and each of the multiple initial module controllers and a minimum quality requirement threshold; and networking the multiple candidate module controllers to obtain multiple networked module controllers.

The present disclosure relates to the technical field of renewable energy, and provides a self-networking method for a module controller, and a related apparatus, to improve the self-networking efficiency for the module controller. The method includes: controlling a power converter to search for multiple initial module controllers and obtaining a PLC link quality value between each initial module controller and the power converter, to obtain multiple PLC link quality values; filtering the multiple initial module controllers based on the multiple PLC link quality values and a minimum quality requirement threshold to obtain multiple candidate module controllers; and networking the multiple candidate module controllers to obtain multiple networked module controllers.

A control device, a computer-readable storage medium, a module-level power electronics apparatus, a new energy system, a power converter, and a control method for a power converter are provided, relating to the technical field of power electronics. The power converter, in a case that the power supply branch connected to the power converter includes at least two power supply strings connected in parallel, regulates a voltage of at least one of the power supply strings, and determines whether input voltages of module-level power electronics apparatuses in the corresponding power supply branch change. For a module-level power electronics apparatus, in normal cases, the input voltage of the module-level power electronics apparatus is constant; and in a case that an input open-circuit fault occurs for the module-level power electronics apparatus, the input voltage of the module-level power electronics apparatus changes due to an inter-string voltage difference between the power supply string where the module-level power electronics apparatus is arranged and other power supply strings connected in parallel to the power supply string. Thus, in a case that an input voltage of a module-level power electronics apparatus changes, it may be determined that an input open-circuit fault occurs for the module-level power electronics apparatus, thereby determining the input open-circuit fault.

A power conversion device, a method for determining a connection state of a power conversion device, a component controller, and a system are provided. The power conversion device includes: a DC input terminal and a control module. The DC input terminal is configured to be connected to a photovoltaic component through a component controller. The control module is configured to: transmit a voltage regulation instruction to the component controller; monitor an input terminal voltage of the DC input terminal connected to the component controller, where the voltage regulation instruction is used for indicating the component controller to regulate an output voltage based on the predetermined voltage change strategy; compare a measured voltage change of the input terminal voltage with a predetermined voltage change strategy; and determine a connection state between the DC input terminal and the component controller based on a comparison result. Therefore, it can be determined conveniently whether the DC side of the power conversion device and the component controller are open circuited.

A control method and a related apparatus are provided. The control method includes: determining actual maximum power limits of the multiple power units, in a process of the multiple power units outputting power with maximum output capacities; and issuing target unit power to the multiple power units respectively, based on the actual maximum power limits of the multiple power units; where the target unit power of each of the multiple power units is less than or equal to the actual maximum power limit of the power unit. The control method and the related apparatus can improve the rationality of power output distribution within the energy system.

A heat dissipation and flow guiding mechanism and a cabinet having the same are provided. The heat dissipation and flow guiding mechanism is configured for guiding a heat flow generated by an electrical device (10) and includes: a first enclosure structure (20) having a first accommodation cavity (22), and a second enclosure structure (30) located above the first enclosure structure (20) and having a flow guiding cavity (31). The first accommodation cavity (22) has a first opening (21) and is configured for mounting the electrical device (10), and the first accommodation cavity (22) is in communication with the flow guiding cavity (31) through the first opening (21). According to the present application, the influence of heat generated by a transformer in an exposed state in the related art on peripheral devices is effectively improved, and the heat dissipation capability of a transformer and an integrated all-in-one machine is further improved.