Transient state and steady state hybrid simulation method and system for power distribution network

A technology of transient simulation and simulation method, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems of slow simulation speed and limited scale, and achieve the effect of solving simulation calculation problems

Pending Publication Date: 2021-05-14
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If all the physical processes of the distribution network are simulated by transient state, the problems of slow simulation speed and limited scale will be faced, especially when transient real-time simulation is used.

Method used

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  • Transient state and steady state hybrid simulation method and system for power distribution network
  • Transient state and steady state hybrid simulation method and system for power distribution network
  • Transient state and steady state hybrid simulation method and system for power distribution network

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Experimental program
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Effect test

Embodiment 1

[0056] A hybrid simulation method for distribution network transient and steady state, such as figure 1 shown, including

[0057] Step 1: Based on the state space matrix of the distribution network system, the eigenfrequency is divided into a transient simulation calculation area and a steady state simulation calculation area.

[0058] Step 2: interacting with the steady-state simulation calculation area and the transient simulation calculation area every reference period and matching the power flow value of the interface until the simulation ends;

[0059] Step 3: Combine the simulation results of the steady-state simulation calculation area and the transient simulation calculation area, and output the simulation results of the complete distribution network cyber-physical system.

[0060] A hybrid simulation method of distribution network transient state and steady state image 3 Shown: By dividing the distribution network system into a steady state calculation area and a t...

Embodiment 2

[0081] Based on the same inventive concept, the present invention also provides a hybrid simulation system for distribution network transient and steady state, including:

[0082] Partition Module, Match Module and Stitch Module.

[0083] The partition module divides the transient simulation calculation area and the steady state simulation calculation area based on the state space matrix of the distribution network system to solve the characteristic frequency;

[0084] The matching module interacts with the steady state simulation calculation area and the transient state simulation calculation area every reference period and matches the power flow value of the interface until the simulation ends;

[0085] The splicing module splices the simulation results of the steady-state simulation calculation area and the transient simulation calculation area, and outputs the simulation results of the complete distribution network cyber-physical system.

[0086] Preferably, the matching ...

Embodiment 3

[0101] The patent of the present invention proposes a hybrid simulation method of distribution network transient state and steady state, the main purpose of which is the partition and block simulation of the information physical system of distribution network. The synergy and unification of different time-scale simulations can solve the simulation calculation problems under large-scale networks: steady-state simulation is suitable for large-scale and slow dynamic processes; transient simulation is suitable for fast dynamic processes, but the simulation scale is small. The use of transient-steady-state integrated simulation can effectively improve the speed of simulation and the scale of simulation.

[0102] The present invention provides a hybrid simulation method of distribution network transient state and steady state, and the simulation framework of distribution network cyber-physical system is as follows: Figure 5 As shown, establish the steady-state and transient simulat...

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Abstract

The invention discloses a transient state and steady state hybrid simulation method and system for a power distribution network. The method comprises the following steps: dividing a transient simulation calculation area and a steady state simulation calculation area based on a state space matrix solving characteristic frequency of a power distribution network system; interacting the steady-state simulation calculation area and the transient-state simulation calculation area at intervals of each reference period, and matching a power flow value of an interface until simulation is finished; and splicing simulation results of the steady state simulation calculation area and the transient state simulation calculation area, and outputting a complete simulation result of the power distribution network information physical system. Cooperative unification of simulation of different time scales in transient simulation and steady-state simulation of the power distribution network information physical system is achieved, and the simulation calculation problem under a large-scale network can be solved.

Description

technical field [0001] The invention relates to the technical field of real-time simulation of a distribution network, in particular to a method and system for a hybrid simulation of a distribution network in a transient state and a steady state. Background technique [0002] A Cyber-Physical System (CPS) is a complex system in which human, machine, object, environment, information and other elements in physical space and information space map to each other, interact in a timely manner, and collaborate efficiently. With the in-depth application of information technology, the deep integration of power flow, information flow and business flow, the close relationship and influence between distribution network information system and physical system, distribution network has become a typical cyber-physical system. In the traditional distribution network simulation, the information system and the physical system are basically separated. Therefore, the simulation of the distributio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/06G06F30/18
CPCG06F30/18G06F2111/02G06F2113/04H02J3/00H02J3/06H02J2203/10H02J2203/20
Inventor 叶学顺白牧可刘科研盛万兴康田园张怀天朱鹮李佩佩
Owner CHINA ELECTRIC POWER RES INST
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