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Power grid electric power and electric quantity balancing method

A technology for power balance and power grid, which is applied in the direction of instruments, character and pattern recognition, data processing applications, etc., and can solve problems such as few balance strategies, insufficient power supply, and damage to power balance

Pending Publication Date: 2020-11-27
STATE GRID CHONGQING ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Generally speaking, the existing research results have certain guiding significance for the daily operation and dispatch of power grids, but these results are considered from the perspective of general power grids, and for power grids with continuously rising power demand and limited installed capacity of power generation, These research results are not enough, there are still some limitations, the power gap problem is not considered, and there are few balance strategies for special periods
With the gradual increase in the penetration rate of renewable energy power generation, it is more difficult to safely operate the power grid. As a prerequisite for power grid operation, the existing power balance method does not fully consider the power generation characteristics of various energy sources, so that the utilization of power generation energy is not high. ; In the short special period when the power load increases sharply, the demand for peak regulation of the power grid increases, the dispatching difficulty of each power station increases, and the power supply is insufficient, that is, the power balance is damaged

Method used

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  • Power grid electric power and electric quantity balancing method
  • Power grid electric power and electric quantity balancing method
  • Power grid electric power and electric quantity balancing method

Examples

Experimental program
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Effect test

Embodiment 1

[0220] Load balance during peak summer and winter

[0221] According to the actual situation of the region, the typical summer and winter days of the Chongqing power grid system are selected for scenario application analysis. For the entire Chongqing power grid system, the period of the balance plan for special periods is set to 1d, and the calculation period of relevant variables is set to 15 minutes. The power dispatching measures adopted include increasing purchased electricity and interruptible loads. The cost coefficients for the measures are shown in Table 1. .

[0222] Table 1 Measure Adjustment Cost Factors

[0223]

[0224] First, select the typical summer and winter load curves of Chongqing power grid, such as image 3 As shown, from the perspective of the curve shape, the typical summer load curve presents a more obvious feature of "two peaks and one valley"; while the change fluctuations in typical winter days are relatively slow, roughly showing a "~" type tr...

Embodiment 2

[0230] Floods in the Wujiang and Jialing Rivers were completely stopped and balanced

[0231] In view of the importance of Wujiang River and Jialing River hydropower in Chongqing, and their inter-annual and intra-annual runoff distributions have a good identity. Therefore, on this basis, the power balance of the Wujiang River and the Jialing River when the floods are completely stopped is studied, so as to analyze its impact on the power balance of the entire power grid system. Considering the comparability, the same typical day of the classic "peaking summer" is taken as the simulation object. In the same way, the joint optimal dispatch of various power sources is firstly integrated. For the time period when the system has a tight power supply, the balance of the power gap is oriented. The goal of minimizing benefit loss should be adjusted. To sum up, the simulation calculation shows that the power adjustment scheme when the Wujiang River and the Jialing River are completely...

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Abstract

The invention discloses a power grid electric power and electric quantity balancing method. The method comprises the steps of setting a power generation sequence and establishing an electric power andelectric quantity balancing model. According to the electric power and electric quantity balancing method, based on the principle of safe and reliable power supply, on the basis that the load requirement is met, how to achieve collaborative optimization of energy such as wind, light, water and fire is considered so as to achieve multi-target benefits, and operation is conducted under the condition that economy is achieved as much as possible; renewable energy sources in a domain are preferentially consumed, environmental pollutant emission can be effectively reduced by equivalently replacingthermal power, and development and utilization of the renewable energy sources play a very important role in optimizing an energy structure; the electric power and electric quantity balancing method is high in practicability and high in generalization performance.

Description

technical field [0001] The invention relates to the technical field of comprehensive management and optimal dispatching at the power generation side of a power system, in particular to a method for balancing electric power in a power grid. [0002] technical background [0003] Through comprehensive regulation and management of the system's load analysis, maintenance, and demand-side management, the power grid can basically determine the operation mode for a period of time in the future, so as to realize decision-making and scheduling under the premise of power balance constraints, so that the power grid can operate with the best strategy . As the core of the power grid to prepare the power supply operation plan, the power balance is also the basis for ensuring the safety, stability and economic operation of the power system. It has always received more attention and research. [0004] Since the 1920s, relevant foreign institutions and scientific researchers have carried out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06K9/62G06Q50/06
CPCG06Q10/06315G06Q50/06G06F18/23Y04S10/50Y02E40/70
Inventor 潘永旗刘德旭罗锡斌刘艳车权李军马光文陈仕军万江刘霜
Owner STATE GRID CHONGQING ELECTRIC POWER
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