A power system real-time simulation method

Abstract

The application relates to a power system real-time simulation method, which comprises the following steps: entering a simulation platform simulation interface, creating relevant devices, and the information of the devices containing working voltage, current, resistance, service life T and aging factor eta; building relevant simulation power systems, taking each device as a node, setting relevant current sensors, voltage sensors and control modules for controlling the working state of the nodes on each node, and classifying the voltage lines in the same voltage line into a level, when any level voltage line is selected, the line in the level is highlighted; setting the temperature parameter K of each node, and the temperature parameter K simulates the temperature change in the nature; setting a test time t, and performing simulation to obtain simulation results. The application can simulate under multiple conditions, and improves the accuracy of the simulation results.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power simulation, in particular to a power system real-time simulation method. BACKGROUND

[0002] The power system is a unified whole composed of power generation, power supply (power transmission, power transformation, power distribution), power utilization facilities, and secondary facilities such as regulation and control, relay protection and safety automation, metering devices, dispatching automation, power communication, etc. required for ensuring normal operation. Power system simulation has always been an essential and basic tool for power system safety and stability analysis and power system operation planning. The power system is not only affected by the quality of its own equipment, but also by environmental temperature and power dispatching. SUMMARY

[0003] The present application aims to provide a power system real-time simulation method that can simulate under multiple conditions and improve the accuracy of simulation results.

[0004] To achieve the above-mentioned purpose, an embodiment of the present application provides a power system real-time simulation method, comprising:

[0005] An analog interface of a simulation platform is entered, relevant devices are created, and the information of the devices includes working voltage, current, resistance, service life T, and aging factor η;

[0006] A relevant analog power system is built, each device is taken as a node, relevant current sensors, voltage sensors, and control modules for controlling the working state of the nodes are set on each node, and the same voltage lines are classified into a level, and when any level voltage line is selected, the line of the level is highlighted;

[0007] Temperature parameters K of each node are given, and the temperature parameters K simulate the temperature change in nature;

[0008] A test time t is set, simulation is performed, and simulation results are obtained.

[0009] Preferably, the devices include power generation devices, voltage conversion modules, power transmission cables, and power utilization devices.

[0010] Preferably, the built power system contains at least one power generation device and at least one power utilization device.

[0011] Preferably, the simulation platform introduces a device damage factor P, t≤T, and α is an aging factor that changes with temperature, and when P≥1, it is determined that the device is damaged.

[0012] Preferably, the aging factor that changes with temperature is α=N·K η , and N is a constant.

[0013] Preferably, when the device temperature k > K, a = N k η .

[0014] Preferably, the current sensor, the voltage sensor and the control module of the working state of the control node are provided with a delay module for simulating the communication delay in the actual.

[0015] The embodiment of the present application has the following beneficial effects:

[0016] The simulation is considered in terms of device parameters, environmental temperature and sensor delay, etc., the accuracy of the simulation is improved, the simulation can be performed under multiple conditions, and the accuracy of the simulation result is improved.

[0017] Other features and advantages of the present application will be described in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The present application provides a flow chart of a real-time simulation method of a power system. DETAILED DESCRIPTION

[0020] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present application can also be implemented without some specific details. In some examples, means well known to those skilled in the art are not described in detail, in order to highlight the main idea of the present application.

[0021] Referring to Figure 1 The present application provides a real-time simulation method of a power system, comprising:

[0022] Step S1, enter the simulation interface of the simulation platform, create relevant devices, and the information of the devices includes working voltage, current, resistance, service life T and aging factor η;

[0023] Specifically, the simulation platform includes a host computer for calculating storage, a display for displaying information and peripheral devices, which can be a mouse, a keyboard, a camera, etc.

[0024] Step S2, build a related simulation power system, and take each device as a node, and set a related current sensor, voltage sensor and control module for controlling the working state of the node on each node, and classify the same voltage line into a level, when selecting any level voltage line, the line of the level is highlighted;

[0025] Specifically, the line highlighting is conducive to the click selection and viewing of different voltage transmission circuits, such as 220V, 380V, 10KV, 110KV, 220KV, etc.

[0026] Step S3, give a temperature parameter K of each node, and the temperature parameter K simulates the temperature change in nature;

[0027] Specifically, the temperature parameter K simulating the temperature change in nature can improve the authenticity of simulation, and is used to simulate the influence of temperature on devices in different geographical positions.

[0028] Step S4, set a test time t, and perform simulation to obtain a simulation result;

[0029] Specifically, the simulation result, such as the number of damage times, the number of overload times and the number of error operations of the control module for controlling the working state of the node, is comprehensively judged.

[0030] Further, the device includes a power generation device, a voltage conversion module (i.e. a voltage transformation device, step-up or step-down), a power transmission cable and a power consumption device.

[0031] Further, the built power system at least includes one power generation device and at least one power consumption device, i.e. a device for generating power and a device for consuming power, to realize the flow of power.

[0032] Further, the simulation platform introduces a device damage factor P, t≤T, and α is an aging factor changing with temperature, when P≥1, it is determined that the device is damaged, when the device is damaged, the time of the current device is recalculated, i.e. a new device is replaced by default, since the longer the use time of the device is, the higher the failure rate of the device is, and the greater the damage probability is, a sine function is adopted.

[0033] Further, the aging factor changing with temperature is α=N·K η N is a constant, and the device itself also generates heat during use, so when the temperature k of the device is greater than K, α=N·k η By setting the environmental factor leading to the aging of the device, the authenticity of the simulation is improved.

[0034] In the simulation test, the overload of the device is also involved, and the overload pressure of the device can be used to judge whether the device is damaged, that is, under different voltages and currents, the device can ensure normal operation for a certain period of time.

[0035] The current-voltage sensor and the module for controlling the working state of the node are provided with a delay module to simulate the communication delay in practice, that is, the sensor needs time to transmit information to the terminal, and the terminal needs time to transmit control information to the module for controlling the working state of the node, and the actual time required is generally between a few milliseconds and a few seconds. If there is a difference in the control signal, it will cause overload damage to some device or reduce its service life.

[0036] The simulation platform also includes an acceleration simulation to improve the efficiency of the simulation and speed up the simulation. The simulation platform also includes a strategy module, which can be programmed according to the power system and automatically adjusted according to the load of the circuit. If two of the three lines are fully loaded, the module for controlling the working state of the node can be linked to distribute the load to the line that is not overloaded.

[0037] The above has described the embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles, practical applications or technical improvements in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A method of real-time simulation of an electric power system, characterized in that, The simulation power system comprises: Enter the simulation interface of the simulation platform, create the relevant equipment, and the equipment information includes operating voltage, current, resistance, service life T, and aging factor used to calculate temperature changes. The exponential parameter η; a simulation power system is built, each device is taken as a node, a current sensor, a voltage sensor and a control module for controlling the working state of the node are arranged on each node, and devices on the same voltage line are classified into a level, when any level voltage line is selected, the line of the level is highlighted; a temperature parameter K of each node is given, and the temperature parameter K simulates the temperature change in nature; Setting a test time t, performing simulation to obtain simulation results; the simulation platform introduces a device damage factor P, , t≤T, is a temperature-dependent aging factor, when P≥1, determining device damage; the temperature-dependent aging factor is N is a constant.

2. The method of claim 1, wherein: the devices include power generation devices, voltage conversion modules, power transmission cables and power consumption devices.

3. The method of claim 1, wherein: The built power system contains at least one power generation device and at least one power consumption device.

4. The real-time power system simulation platform of claim 1, wherein: When the device temperature k > K, .

5. The method of claim 1, wherein: The current sensor, the voltage sensor and the control module for controlling the working state of the node are provided with a delay module for simulating the communication delay in practice.

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