2results about How to "Eliminate circulation" patented technology

The invention relates to the technical field of electric power, in particular to a power supply zero-sensing switching method and system based on phase real-time tracking, and the method comprises the following steps: collecting the communication connection state of each inverter node in a micro-grid group, constructing a communication topology model of the micro-grid group, and analyzing a sparse communication connection relationship among the nodes in the communication topology model, and generating a Laplacian matrix reflecting node connectivity according to the sparse communication connection relationship. According to the method, the system state can be comprehensively evaluated from the two dimensions of external alignment precision and internal stability, and misjudgment caused by a single index is avoided. Dual errors are input into a switching stability evaluation model to calculate a stability index, and a switching instruction is generated only when the index exceeds a grid-connected permission threshold value, so that quantitative decision and strict control of a grid-connected opportunity are realized, and the micro-grid and a main grid are highly synchronous in phase and frequency at the moment that a circuit breaker is closed; and transient impact and circulation at the switching-on moment are eliminated.

The utility model discloses a kind of test fixture of remote controller detection equipment, including shielding shell, bearing assembly and pressure component. Shielding shell includes base portion and lid portion, lid portion is driven by opening and closing driving member to open and close;Bearing assembly is located in base portion, including bottom plate, detection substrate and bearing plate, bearing plate is equipped with positioning area, detection substrate is equipped with signal acquisition terminal, bearing plate is equipped with avoiding hole correspondingly;Bearing plate is supported by elastic reset piece floating, when being pressed, it can be floated downward to make the remote controller to be measured and signal acquisition terminal contact conduction;Pressure component is driven by linear drive device and moves downward, and it can be marked after test by integrated physical marker executor synchronously by applying pressure force.The utility model absorbs remote controller tolerance by floating bearing structure, guarantees contact reliability;Test and marking are completed in same station, and integration degree is high;Shielding shell and fixture are integrated, and structure is compact.