A test and recording device for load characteristics of substation bus

Abstract

The invention discloses a testing and recording device for load characteristics of a transformer substation bus. Three-phase voltage and three-phase current signals of a bus secondary cable are acquired through a signal conditioning module, the signals are conditioned, each path of signal is adjusted into a voltage range in which acquisition can be conducted by an analog-digital conversion module of the device, the signals are filtered through an anti-aliasing filter module to be input into the analog-digital conversion module, the analog-digital conversion module is controlled by a control module to sample the signals to obtain acquisition data of the three-phase voltage and a three-phase current, the acquisition data are forwarded to an upper computer, the upper computer conducts load parameter identification on a selected load module according to the acquisition data, and a load parameter identification result is stored and uploaded according to an instruction. According to the testing and recording device for load characteristics of the transformer substation bus, distributed computation of load parameter identification is achieved, and it is unnecessary to collect data by workers on site. Although the load parameter identification result will be uploaded, the data volume of the load parameter identification result is less than the data volume measured in real time, and data transmission pressure of a power private network is low.

Description

technical field [0001] The invention belongs to the field of electric system load parameter identification, and more specifically relates to a load characteristic test and record device for a substation bus bar. Background technique [0002] The various operation modes of the power system and the emergency treatment of accidents are based on simulation. Therefore, only by improving the accuracy of simulation and making the simulation results match the actual physical system as much as possible can accidents be better prevented. , so that the system runs scientifically. In the simulation model, the four key parameters that most directly affect the power system simulation results include: generator parameters, excitation system parameters, speed control system parameters and load parameters. Ensuring the accuracy of the above four parameters is to ensure the accuracy of the simulation premise. [0003] In practice, the parameters of most power grid equipment use the design v...

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