Load parameter identification device and method for electric power system station terminal

A load parameter and power system technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as diversity load aggregation problems without considering diversity problems

Active Publication Date: 2018-03-23
TSINGHUA UNIV +1
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Problems solved by technology

Finally, even if only considering the load model structure composed entirely of induction motors and static loads, the existing research has not considered the divers

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  • Load parameter identification device and method for electric power system station terminal
  • Load parameter identification device and method for electric power system station terminal
  • Load parameter identification device and method for electric power system station terminal

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0051] Such as figure 1 As shown, a load parameter identification device at the station end of a power system proposed by the present invention includes a first data acquisition module, a second data acquisition module, a logic calculation module and a function management module. The first data acquisition module is used to discretely sample the real-time collected voltage and current signals of the power system power station end grid to obtain the original sampled values ​​of the voltage and current signals and send them to the logic calculation module; the second data acquisition module is used to The input signal of the power system power station end grid collected in real time is converted into a digital signal and sent to the logic calculation module; the logic calculation module performs phasor calculation and load parameter identification based...

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Abstract

The invention relates to a load parameter identification device and method for an electric power system station terminal. The method comprises steps that 1), voltage and current signals of a power grid secondary loop are acquired in real time, after the acquired voltage and current signals are converted and filtered, discrete sampling is carried out to acquire original sampling values of the voltage and current signals; 2), the open state information of the power grid secondary loop is acquired in real time, after anti-shaking and discrimination of the acquired open state information are carried out, the information is converted into a digital signal, and the opening and closing state information of a line switch is acquired for man-machine interface display; 3), phasor calculation and load parameter identification are carried out according to the original sampling values of the voltage and current signals to acquire the phasor calculation result and the load parameter identification result; and 4), the opening and closing state information of the step 2) and the phasor data and the load model identification result acquired in the step 3) are displayed through a man-machine interface and are uploaded to a main scheduling station.

Description

technical field [0001] The invention belongs to the technical field of dynamic monitoring of power systems, and in particular relates to a load parameter identification device and method at a station end of a power system. Background technique [0002] The power system model is very important to the simulation analysis and calculation of power system operation, and the modeling of its load parameters plays a key role in the application of the power system model. Different load models and parameters are selected, and there are differences in the dynamic response results in the simulation analysis of the power system, and even affect the judgment of the stability of the power system. To analyze different power system stability problems, the requirements for load models are also different. Different load models that meet the actual load position, composition, structure and other conditions must be established according to the application purpose of the load model and the specif...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 熊春晖李明宇王颖尚慧玉陆超刘春晓
Owner TSINGHUA UNIV
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