Unlock instant, AI-driven research and patent intelligence for your innovation.

Distributed power supply access capability prediction method and system

A technology of distributed power supply and access capability, which is applied to power generation forecasting in AC network, load forecasting in AC network, electrical components, etc. Valley difference rate and other issues to achieve the effect of ensuring smooth operation and accuracy

Pending Publication Date: 2022-02-01
STATE GRID SHANDONG ELECTRIC POWER
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Different from traditional power sources, some distributed power sources use new energy power generation (such as solar energy and wind energy), and their output power is limited by natural conditions and cannot provide stable output, so they cannot be simply considered as traditional power sources.
[0005] The inventor found that the existing distributed power access capacity prediction does not consider the peak-to-valley difference rate after the distributed power source is connected, which leads to the problem of unstable operation of the power grid after the distributed power source is connected. At the same time, when predicting the access capacity of distributed power generation, the influence of unstable load factors such as electric vehicle charging load is not considered, which makes the prediction result of access capacity of distributed power generation inaccurate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Distributed power supply access capability prediction method and system
  • Distributed power supply access capability prediction method and system
  • Distributed power supply access capability prediction method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this embodiment, a distributed power access capability prediction method is disclosed, including:

[0029] Obtain the active power and equivalent load prediction value of the power output of conventional units in the system;

[0030] Input the output active power and equivalent load prediction value of the conventional unit power supply into the constructed distributed power access capacity prediction model to obtain the distributed power access capacity prediction results;

[0031] Among them, the distributed power access capability prediction model is based on the minimum comprehensive cost of initial investment, maintenance and operation of each power source, system power balance, output active power constraints of each power source, energy storage battery charge and discharge power constraints, and photovoltaic grid-connected reliability constraints. Constraints are constructed with the goal of minimizing the peak-to-valley difference rate of the power grid after...

Embodiment 2

[0130] In this embodiment, a distributed power access capability prediction system is disclosed, including:

[0131] The data acquisition module is used to acquire the active power and equivalent load prediction value of the power output of conventional units in the system;

[0132] The charging load prediction module is used to input the active power and equivalent load prediction value output by the conventional unit power supply into the distributed power access capacity prediction model constructed to obtain the distributed power access capacity prediction results;

[0133] Among them, the distributed power access capability prediction model is based on the minimum comprehensive cost of initial investment, maintenance and operation of each power source, system power balance, output active power constraints of each power source, energy storage battery charge and discharge power constraints, and photovoltaic grid-connected reliability constraints. Constraints are constructed...

Embodiment 3

[0135] In this embodiment, an electronic device is disclosed, including a memory, a processor, and computer instructions stored in the memory and executed on the processor. When the computer instructions are executed by the processor, a method disclosed in Embodiment 1 is completed. The steps described in a distributed power access capability prediction method.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a distributed power supply access capability prediction method and system. The method comprises the following steps: obtaining active power and an equivalent load prediction value output by a conventional unit power supply in a system; and inputting the active power output by the conventional unit power supply and the equivalent load prediction value into the constructed distributed power supply access capability prediction model, and obtaining a distributed power supply access capability prediction result. The distributed power supply access capability prediction model is constructed by taking minimum comprehensive cost of initial investment, maintenance and operation of each power supply, system power balance, output active power constraint of each power supply, energy storage battery charging and discharging power constraint and photovoltaic grid-connected reliability constraint as constraint conditions, and taking the minimum peak-valley difference rate of the power grid after the distributed power supply is connected as a target. And the peak-valley difference rate of the power grid is minimum after the distributed power supply is connected.

Description

technical field [0001] The present invention relates to the technical field of power grid planning, in particular to a method and system for predicting access capability of distributed power sources. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Wind power and solar power are widely and large-scale connected to the power system, and the randomness and volatility of power generation make the power system face challenges. When distributed power is connected to the distribution network, it will have an impact on the node voltage, line flow, short-circuit current, reliability, etc. of the distribution network, which will inevitably bring new challenges and uncertainties to the distribution network planning. The randomness and randomness increase significantly, so that when considering the traditional factors of planning distribution networ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02J3/00H02J3/38
CPCH02J3/381H02J3/004H02J3/003H02J3/008H02J2203/20H02J2203/10
Inventor 魏振安树怀宋佳郭建豪郑准王义元孙恩德万发耀
Owner STATE GRID SHANDONG ELECTRIC POWER