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Comprehensive cycle efficiency running-phase testing and feasibility-study-stage estimation method for storage power station

A cycle efficiency and energy storage power station technology, applied in hydroelectric power generation, engine function, engine components, etc., can solve problems such as investment decision-making risks of power stations

Inactive Publication Date: 2018-04-20
中国南方电网有限责任公司调峰调频发电公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In fact, a 1% difference in the overall efficiency of large-scale pumped storage power plants can lead to a difference of tens of millions or even hundreds of millions of kilowatt-hours of electricity per year, which brings huge risks to power plant investment decisions

Method used

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  • Comprehensive cycle efficiency running-phase testing and feasibility-study-stage estimation method for storage power station
  • Comprehensive cycle efficiency running-phase testing and feasibility-study-stage estimation method for storage power station
  • Comprehensive cycle efficiency running-phase testing and feasibility-study-stage estimation method for storage power station

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Experimental program
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Effect test

Embodiment 1

[0102] This embodiment discloses a method for testing the comprehensive cycle efficiency of an energy storage power station during the operation phase, and the steps are as follows:

[0103] Step S1 Step S1, collecting the pump efficiency η of the pumped storage power station p , Turbine efficiency η g and lift head H information; and obtain the historical operation data of the pumped storage power station below a certain year, including the annual power generation Eg , annual water pumping power E p 、Annual natural water inflow to the upper reservoir V in And the annual upper reservoir tolerance △V; according to the above data, the pumped storage power station can calculate the power generation capacity K g And pumping each cubic meter of water consumption K p ;

[0104] Among them, in this step, according to the pump efficiency η of the collected pumped storage power station p , Turbine efficiency η g Calculate the power generation K per cubic meter of water in the pum...

Embodiment 2

[0135] This embodiment discloses a method for estimating the comprehensive cycle efficiency of an energy storage power station in the feasibility study stage, and the steps are as follows:

[0136] Step S1, obtain the hydraulic turbine efficiency η of electromechanical design g and lift head H, and then according to the obtained electromechanical designed turbine efficiency η g Calculate the power generation K per cubic meter of water in the pumped storage power station by calculating the head and head H g ;

[0137] At the same time, according to the hydrometeorological data of the proposed upper reservoir dam site in the planning stage of the pumped storage power station, the estimated annual natural inflow V of the upper reservoir of the pumped storage power station is obtained in and the annual evaporative seepage volume V of the upper reservoir es ; In this embodiment, the expected annual natural water inflow V of the pumped storage power station is calculated by the p...

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Abstract

The invention discloses a comprehensive cycle efficiency running-phase testing and feasibility-study-stage estimation method for a storage power station. The method comprises the following steps: first, acquiring such information as the water pump efficiency etap, the water turbine efficiency etag and the lift head H of the pumped storage power station, and calculating out the generating capacityKg per cube of water and the power consumption Kp in pumping each cube of water of the pumped storage power station; meanwhile, acquiring historic running data of a given year of the pumped storage power station, including annual energy output Eg, annual water-pumping electric quantity Ep, annual natural water inflow Vin of an upper reservoir, and annual upper-reservoir tolerance deltaV; and at last, calculating out the comprehensive cycle efficiency of the storage power station in the running phase according to a comprehensive cycle efficiency calculation formula. The comprehensive cycle efficiency calculation formula draws evaporation and leakage loss of water in the upper reservoir of the pumped storage power station into consideration, so that the comprehensive cycle efficiency of thepumped storage power station in the running phase can be quickly and accurately calculated, and meanwhile, the comprehensive cycle efficiency of the pumped storage power station in the feasibility study stage can be reasonably estimated.

Description

technical field [0001] The invention relates to the comprehensive cycle efficiency of an energy storage power station, in particular to a method for testing the comprehensive cycle efficiency of an energy storage power station in the operation stage and estimating the feasibility study stage. Background technique [0002] With the rapid development of the national economy, the scale of the power grid is getting larger and larger, and the role and status of the pumped storage power station in the power grid are becoming more and more significant. tool. The pumped storage power station is a special power station with the characteristics of fast start-up, fast load tracking and fast response. [0003] The pumped storage power station is the product of the development of my country's power system to a certain stage. Practices in Europe, America and Japan have shown that about 10% of the power system is equipped with pumped storage power stations, which can effectively improve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B13/06
CPCF03B13/06F05B2260/821F05B2260/83Y02E10/20Y02E60/16
Inventor 叶复萌华丕龙
Owner 中国南方电网有限责任公司调峰调频发电公司
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