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Multi-region random production simulation method considering extra-high voltage peak regulation and application

A simulation method and UHV technology, applied in data processing applications, instruments, forecasting, etc., can solve problems such as UHV without consideration, and achieve the effect of improving economy, improving economy and reliability

Active Publication Date: 2019-04-12
国家电网有限公司西南分部 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stochastic production simulation of the above patents further considered the impact of pumped storage power plants and load changes, but still did not consider the impact of UHV peak shaving. Therefore, it is necessary to study the stochastic production simulation method of power system considering UHV peak shaving

Method used

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  • Multi-region random production simulation method considering extra-high voltage peak regulation and application
  • Multi-region random production simulation method considering extra-high voltage peak regulation and application
  • Multi-region random production simulation method considering extra-high voltage peak regulation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0121] In this example, the stochastic production simulation method that can consider UHV peak regulation is applied to an actual H regional power grid. The H region includes city A, province B, province C, province D and province E. In order to illustrate the effectiveness of the proposed method, two groups of comparison examples are set up. The first group verifies the benefits brought by the power transmission of the inter-provincial tie line to the power grid. Therefore, the UHV peak-shaving depth is set to 50%. First, The random production simulation of the four provinces and one city of the H power grid is carried out separately, and the reliability level and production cost of each area are obtained. The stochastic production simulation considering the constraints of inter-provincial network transmission capacity is also carried out to obtain the reliability level and production cost of each area in the system, and compare the results of the two production simulations. ...

Embodiment 2

[0142] Taking the actual system of the H power grid in the summer period of a planning level year as an example of stochastic production simulation. In this level year, the total installed capacity of the power grid in this region is 390381MW. It is estimated that the maximum transmission power of UHV transmission lines connected to the regional power grid will reach 65180MW. The forecasted load is 314099.6MW, the minimum forecasted load is 180155.2MW, and the peak-to-valley difference of the maximum load of the system will reach 133944.4MW. The regional power grid will face greater peak-shaving pressure. The hourly peak load change curve in summer is as follows Figure 10 shown.

[0143] The stochastic production simulation considering UHV connection in the summer period (6.1-8.31) of the planning level year of the regional power grid is carried out, and the reliability of the system is calculated when UHV does not participate in peak shaving and UHV participates in peak sha...

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Abstract

The invention relates to a multi-region random production simulation method considering extra-high voltage peak regulation and application. The production simulation method comprises the following steps: 1) obtaining a whole-year load curve of each region, removing new energy output from the whole-year load curve to form a continuous load curve of each region, and dividing the continuous load curve into a base load stage, a waist load stage and a peak load stage according to a whole-year load level; 2) establishing an extra-high voltage power supply model, and performing load electric quantitydistribution based on an output section of an extra-high voltage power supply in the region; and 3) establishing a multi-region connection line transmission power probability, controlling the on-loadstates of the thermal power generating unit and the hydroelectric generating unit in each region, and realizing random production simulation. Compared with the prior art, the method has the advantages of improving the overall economy and reliability of the large-region power grid and the like.

Description

technical field [0001] The invention relates to the technical field of power system planning and operation control, in particular to a multi-area stochastic production simulation method and its application considering UHV peak regulation. Background technique [0002] The construction of the UHV power grid will help to transmit the electricity from major energy bases to the load center area, fundamentally alleviating the shortage of electricity in the load center area. But on the other hand, the contradiction between the consumption of large-scale UHV and the peak regulation of the power grid at the receiving end is becoming more and more prominent. At present, the UHV transmission end is mainly hydropower, and hydropower is limited by external weather conditions and the type of hydropower station. In summer, it mainly transmits electricity, and in spring, autumn and winter, it can participate in a small amount of system peak regulation, and there is an "anti-peak regulation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06Y04S10/50
Inventor 魏明奎路亮周全江栗袁杨蔡绍荣柳璐陈佩华程浩忠张程铭
Owner 国家电网有限公司西南分部