风电-抽水蓄能混合系统综合效益评估方法

Q1 Engineering

电网技术 Pub Date : 2014-02-05 DOI:10.13335/J.1000-3673.PST.2014.02.020

X. Bai, Cong Jing, Gao Xiaofeng, Gu Yu

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引用次数: 16

摘要

针对大型风电场并网时并网容量受限、弃风率高的问题，通常考虑通过储能系统来提高电网对风电的容纳能力，但如何评价风电-抽水蓄能混合系统的整体效率是需要解决的问题。为此，分析了抽水蓄能系统的投资成本、经济效益及其运行约束，揭示了区域电网优化运行条件下，风电-抽水蓄能混合系统综合效益与储能容量之间的后续机制，建立了求解综合效益的数学模型，提出了综合效益的评价方法。该方法基于相互匹配的火电机组、风电和电网负荷特性的出力曲线，结合火电机组装机容量，利用系统频率与负荷(或发电量变化)的关联关系，定量分析抽水蓄能电站容量、使用寿命、成本、收益等因素的变化对综合效益和电网的影响风电适应能力。实例分析表明，所提出的评价方法是有效的。

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A Method to Evaluate Comprehensive Benefits of Hybrid Wind Power-Pumped Storage System

In allusion to restricted grid-connected capacity and high wind power curtailment when large-scale wind farm is grid-connected,in usual it is considered to improve power grid's ability of accommodating wind power by energy storage system,however how to evaluate the overall efficiency of the hybrid wind power-pumped storage system is the problem to be solved well.For this reason,the investment cost,economic benefit of pumped storage system and its operational constraints are analyzed,thus the follow-up mechanism between comprehensive benefits of hybrid wind power-pumped storage system and energy storage capacity under optimized operating condition of regional power grid is revealed,and a mathematical model to solve the comprehensive benefits is established and a method to evaluate the comprehensive benefits is proposed.Based on output curves of mutually matched thermal generation units,wind power and load characteristics of power grid and combining with the installation capacity of thermal generation units and utilizing the incidence relation between system frequency and load(or the change of power generation),the proposed method quantitatively analyzes the impacts of the change of such factors of pumped storage station as its capacity,service life,cost and revenue on comprehensive benefits and power grid's accommodation ability of wind power.Case analysis shows that proposed evaluation method is effective.

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来源期刊

电网技术 Engineering-Mechanical Engineering

CiteScore

7.30

自引率

0.00%

发文量

13735

期刊介绍： "Power System Technology" (monthly) was founded in 1957. It is a comprehensive academic journal in the field of energy and power, supervised and sponsored by the State Grid Corporation of China. It is published by the Power System Technology Magazine Co., Ltd. of the China Electric Power Research Institute. It is publicly distributed at home and abroad and is included in 12 famous domestic and foreign literature databases such as the Engineering Index (EI) and the National Chinese Core Journals. The purpose of "Power System Technology" is to serve the national innovation-driven development strategy, promote scientific and technological progress in my country's energy and power fields, and promote the application of new technologies and new products. "Power System Technology" has adhered to the publishing characteristics of combining "theoretical innovation with applied practice" for many years, and the scope of manuscript selection covers the fields of power generation, transmission, distribution, and electricity consumption.