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Power system load flow simulation calculation method and system

A power system and simulation calculation technology, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as complex iterative calculation process, influence of power flow calculation accuracy, and slow power flow calculation speed, so as to simplify the calculation process and improve calculation The effect of processing speed

Active Publication Date: 2020-09-01
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional power system power flow calculations are based on mathematical models and iterative algorithms. Equivalent models, equivalent parameters, and algorithm convergence will affect the accuracy of power flow calculations. In terms of computational efficiency, for large-scale power systems, the speed of power flow calculations Slow and complex iterative calculation process

Method used

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  • Power system load flow simulation calculation method and system
  • Power system load flow simulation calculation method and system
  • Power system load flow simulation calculation method and system

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Embodiment 1

[0040] The embodiment of the present invention provides a power system power flow simulation calculation method, which is applied to occasions where power flow calculation and control are required in a huge circuit system. The power system is composed of branch circuit components and injection components, such as figure 1 As shown, the power system power flow simulation calculation method includes:

[0041] Step S1: According to the obtained preset parameters and preset equivalent circuit of the branch components, the branch components are equivalent to a four-port network, and according to the obtained preset parameters and preset equivalent node circuits of the injection components, inject The element is equivalent to a two-port network.

[0042]The power flow calculation is based on the given power grid structure, parameters, and operating conditions of generators, loads and other components to determine the calculation of the steady-state operating state parameters of each...

Embodiment 2

[0086] An embodiment of the present invention provides a power system power flow simulation calculation system, such as Figure 17 shown, including:

[0087]The port network module 1 is used to convert the branch components into a four-port network according to the obtained preset parameters and preset equivalent circuits of the branch components, and according to the obtained preset parameters and preset equivalent nodes of the injection components circuit, the injection element is equivalent to a dual-port network; this module executes the method described in step S1 in Embodiment 1, and details are not repeated here.

[0088] The language description module 2 is used to use a preset description language to describe the voltage and current relationship of each port of the four-port network and the two-port network; this module executes the method described in step S2 in Embodiment 1, which will not be repeated here.

[0089] The integrated circuit generation module 3 is use...

Embodiment 3

[0093] An embodiment of the present invention provides a computer device, such as Figure 18 As shown, it includes: at least one processor 401 , such as a CPU (Central Processing Unit, central processing unit), at least one communication interface 403 , memory 404 , and at least one communication bus 402 . Wherein, the communication bus 402 is used to realize connection and communication between these components. Wherein, the communication interface 403 may include a display screen (Display) and a keyboard (Keyboard), and the optional communication interface 403 may also include a standard wired interface and a wireless interface. The memory 404 may be a high-speed RAM memory (Ramdom Access Memory, volatile random access memory), or a non-volatile memory (non-volatile memory), such as at least one disk memory. Optionally, the memory 404 may also be at least one storage device located away from the aforementioned processor 401 . Wherein, the processor 401 can execute the powe...

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Abstract

The invention discloses a power system load flow simulation calculation method and system. The method comprises the steps of enabling a branch element to be equivalent to a four-port network and enabling an injection element to be equivalent to a dual-port network according to a preset parameter, a preset equivalent circuit and a preset equivalent node circuit; describing a network voltage and current relationship of each port by utilizing a preset description language; obtaining a power system integrated circuit according to the branch element, the injection element topological connection relationship and the voltage and current relationship language description of each port; and measuring the network instantaneous voltage and current of each port, and obtaining a load flow calculation result by utilizing the network instantaneous voltage and current of each port. According to the present invention, the program language description is carried out on the branch element preset equivalent circuit four-port network and the injection element dual-port network, and the described port networks are connected and packaged according to the topological connection relationship to obtain the power system integrated circuit, and the load flow calculation result is obtained according to the measured network instantaneous voltage and current of each port, so that the calculation processing speed of the load flow system is increased.

Description

technical field [0001] The invention relates to the technical field of power system power flow simulation, in particular to a power system power flow simulation calculation method and system. Background technique [0002] Power system power flow calculation is the basic calculation of power system analysis, and its calculation accuracy and efficiency are crucial to the planning, operation and control of large-scale power systems. Traditional power system power flow calculations are based on mathematical models and iterative algorithms. Equivalent models, equivalent parameters, and algorithm convergence will affect the accuracy of power flow calculations. In terms of computational efficiency, for large-scale power systems, the speed of power flow calculations Slow and complex iterative calculation process. Contents of the invention [0003] Therefore, the technical problem to be solved by the present invention is to overcome the disadvantage of slow power flow calculation ...

Claims

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Application Information

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IPC IPC(8): H02J3/06
CPCH02J3/06H02J2203/10H02J2203/20Y02E60/00
Inventor 戴仁昶刘广一何明张翔戴江鹏路轶廖志军杨小磊王之伟
Owner STATE GRID CORP OF CHINA
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