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A Modeling Method for Water Passing System of Pumped Storage Unit

A technology of pumped storage unit and modeling method, which is applied in the fields of instrumentation, calculation, electrical digital data processing, etc., can solve problems such as complex modeling and inaccurate description of water hammer characteristics, and achieve high matching degree and convenient and intuitive modeling , high precision effect

Active Publication Date: 2017-04-19
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a modeling method for the water passing system of a pumped storage unit, which aims to solve the problem of complex modeling of the water passing system of the existing pumped storage unit and the description of water shock characteristics. inaccurate technical issues

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  • A Modeling Method for Water Passing System of Pumped Storage Unit
  • A Modeling Method for Water Passing System of Pumped Storage Unit
  • A Modeling Method for Water Passing System of Pumped Storage Unit

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Embodiment Construction

[0054] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0055] figure 1 Shown is the flow chart of the modeling method of the water passing system of the pumped storage unit provided by the present invention, which specifically includes the following steps:

[0056] Step 1: Establish the equivalent model of the pipeline circuit with pressure;

[0057] (1-1) dividing the entire section of the pressurized water pipeline into n pressurized micropipe s...

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Abstract

The invention discloses a modeling method for a water exchange system of a pump storage group. The method comprises the following steps: establishing a pressure pipeline model, a pressure-regulating chamber model and a pump turbine model of the pump storage group by use of a circuit equivalent method; forming an equivalent circuit model of the water exchange system of the pump storage group according to the models; and establishing an ordinary differential matrix equation of an equivalent circuit network of the water exchange system according to the multi-dimensional Kirchhoff voltage and current theorem. According to the modeling method provided by the invention, verification is performed by virtue of a pump storage group regulating system mathematic model emulation method based on the circuit equivalent method, and verification results indicate that the established water exchange system model of the pump storage group can furthest meet the precise modeling requirements of emulation on a hydroelectric energy system and analysis on an electric system.

Description

technical field [0001] The invention belongs to the field of modeling and transition process analysis of a hydraulic power generating set in an electric power system, and more specifically relates to a modeling method for a pumped-storage generating set passing water system. Background technique [0002] Pumped storage power station has the characteristics of fast response such as peak-shaving and valley-filling, emergency backup, frequency regulation, and regulation. Peak shaving issues and effective means to ensure safe and reliable operation. Compared with conventional hydropower stations, pumped storage power stations have the characteristics of high water head, frequent switching of working conditions, complex water flow system and two-way water flow, etc. When modeling the water flow system, it is necessary to consider the complex elastic water hammer effect of pressure pipes , but also take into account the influence of complex boundary characteristics such as surge ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 周建中许颜贺赵威郑阳张云程张楚付文龙胡弦李超顺胡肇伟赵志高张楠武越越
Owner HUAZHONG UNIV OF SCI & TECH
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