Reward-punishment weight type simulation sequence similarity analysis method in consideration of morphologic change

A technology of similarity analysis and morphological change, applied in instrumentation, calculation, electrical and digital data processing, etc., can solve problems such as economic loss

Active Publication Date: 2018-12-07
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +3
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Problems solved by technology

Most of the experiments in the power system cannot be carried out in the actual field, and it is necessary to use the power system simulation to realize, so the reliability of the power system simulation is very important, and the simulation that cannot reflect the real state of the power grid is meaningless and unreliable models can even lead to huge financial losses

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  • Reward-punishment weight type simulation sequence similarity analysis method in consideration of morphologic change
  • Reward-punishment weight type simulation sequence similarity analysis method in consideration of morphologic change
  • Reward-punishment weight type simulation sequence similarity analysis method in consideration of morphologic change

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Embodiment Construction

[0024] The present invention provides a method for similarity analysis of reward and punishment weighted simulation sequences considering shape changes. The examples will be described in detail below in conjunction with the accompanying drawings. The simulation system diagram of the present invention is as follows figure 1 As shown; the designed implementation process of analyzing the similarity of different power system software simulation results is as follows figure 2 shown.

[0025] figure 1 The simulation model shown is the single-ended 201 level MMC-HVDC system, which is simulated under the offline electromagnetic transient program PSCAD / EMTDC and the real-time simulation program RTDS respectively. The data of RTDS is the data of the next time window in the steady state, and PSCAD The data in is the simulation data of the single-ended system from startup to steady state. For the convenience of analysis, the simulation data of the two softwares are output to a text fil...

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Abstract

The invention discloses a reward-punishment weight type simulation sequence similarity analysis method in consideration of morphologic change, and belongs to the technical field of the power system simulation. The method comprises the following steps: acquiring to-be-analyzed simulation data, acquiring time sequences in same dimension comparison after performing averaging processing on the initialdata, and giving out the entire similarity of the software type, and computing the entire change tendency similarity of two groups of simulation data by using the slop change of the adjacent time interval data points of the simulation sequence; obtaining the analyzed and compute weight at each point by appropriately rewarding or punishing the selected initial weight according to the amplitude proportion, and finally obtaining a formula for computing the similarity of two groups of simulation sequences. The simulation result data of different software is processed from a quantitative angle, any time sequence capable of acquiring the software simulation result of different power systems can be analyzed by using this method, and the method is further applicable for the similarity analysis ofthe offline simulation and the online real-time data.

Description

technical field [0001] The invention belongs to the technical field of electric power system simulation, and in particular relates to a similarity analysis method of a reward-punishment weight type simulation sequence considering shape change. Background technique [0002] In recent years, the energy revolution is on the rise. Wind power, photovoltaic and other renewable energy power generation forms are gradually replacing coal, oil, natural gas and other traditional energy power generation. The power transmission form of the grid is not limited to pure AC transmission and DC transmission, but also includes AC and DC hybrid transmission. . Controllable series compensation, voltage source converter, FACTS (Flexible Alternating Current Transmission Systems) device, and the access of new power electronic equipment make power system operation and control more flexible, but increase the difficulty of power system modeling and analysis. [0003] Power system simulation is an imp...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 刘崇茹凌博文王宇安宁丁平赵敏徐希望蔡靖李芳黄彦浩
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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