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双语推荐：风电场

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本文根据风电场出力的相关数据，分析了宁夏地区单个风电场和多个风电场组成的风电场群出力的特性及风电场负荷趋势。通过对宁夏地区5个已运行的单个风电场5分钟平均负荷数据的统计分析，得出了相关结论。
With the wind farm output data, this paper analyzed the output characteristics of single wind farm and a number of wind farms of Ningxia region. Trough the statistical analysis of 5 minutes on average load data of 5 single wind farms which has been operated for years, this paper drew the relevant conclusions.

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本文采用合理有效的功率控制策略,设计了风电场能量管理系统,对风电场的有功功率和无功功率进行控制。通过阐述风电场中风电机组的工作原理,提出了风电场能量管理系统的设计方案,并分析了系统的控制效果。实际风电场的试验结果表明,该风电场能量管理系统可以实现风电场输出功率的快速、准确控制。
In this paper, energy management system is designed by using reasonable and efective control strategy to control the active power and reactive power. The working principle of the wind turbine is described, and the design scheme of the energy management system is proposed in this paper, the efect of the system is also analyzed. Te practical applications indicate that the output power of wind farm can be controlled rapidly and accurately by this system.

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由于受到山地、岩溶和凝冻的影响,贵州山区风电场投资具有一定的特点。本文通过分析这些因素对贵州山区风电场投资的影响,并对山区风电场与平原风场投资进行对比分析,总结贵州山区风电场投资特点,提出编制贵州山区风电场工程造价时应注意的问题。
Wind farm in mountain area of Guizhou is afected by mountain area, karst and icy,and its investment have certain characteristics. Tis paper analyses how those factors afect the investment of wind farm in mountain area of Guizhou and makes a investment comparison between wind farm in mountain area and that in plain, summarizing the characteristics of the investment,and puting forward some questions which should be pay atention to when you prepare the investment of wind farm in the mountain area of Guizhou.

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风电场建模是研究风电场接入电网运行和控制的基础。随着我国千万千瓦级风电场陆续投入电网运行,建立描述大型风电场的稳态和动态行为的数学模型是一个关键课题。对现有风电场建模研究成果从风速—功率关系模型、稳态潮流计算模型、动态模型和暂态模型四方面进行分析和总结;并针对近期出现的大型风电场连锁切机事故,提出了风电场连锁动态过程建模的概念和必要性。通过对现有风电场建模方法的综述,旨在指出目前大规模风电场建模存在的问题和需要进一步研究的方向。
The model of wind farm is the foundation of the grid operation and control with wind farm integration. Establishing mathematical models to describe the steady-state and dynamic behavior of large-scale wind farm is a critical issue with tens of millions kW wind power being injected into the grid one after the other. The research of wind farm modeling is analyzed and summarized from four aspects which are wind speed-output power characteristic model, power flow calculation model, dynamic model and transient model;the concept and the necessity of the cascading dynamic process of the wind farm are proposed aiming at the cascading trip-off of large-scale wind farm recently. The problems of large-scale wind farm modeling and further research are pointed out based on an overview of the existing approachs of wind farm modeling. This work is supported by National Natural Science Foundation of China (No. 51190103 and No. 51177043).

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通过对风电功率的相关性分析,可更加直接地掌握风电场、风电场群、风电基地三个层次的互补特性,对风电基地规划、电网的安全稳定运行都有着重要的指导意义。本文利用酒泉地区风电场的实测功率数据,通过相关系数法研究风电场、风电场群和风电基地在1~10 h三种不同时间尺度的风电功率相关性,研究功率相关性随不同时间尺度的变化规律。最后利用时移数据的相关系数法分析风电场、风电场群的功率上下游关系,其结果与地理分布情况一致。
As wind power is developing rapidly, the integration of wind fpower causes a large challenge to power systems. Unlike traditional thermal power generation, wind power is fluctuated and random. Thus, it is very impor?tant to understand the characteristics of wind power. This paper investigates wind power correlation based on practi?cal data. In this study, complementary characteristics of wind farms, wind farm groups, and wind farm bases will be obtained through correlation analysis of wind power. And this is beneficial for planning, security and stability of power grids. Based on practical wind power data in Jiuquan wind base, correlation among wind farm groups and wind power base in different time dimension from 1 h to 10 h has been analyzed through the correlation coefficient method in this paper. Thus, variation rule of wind power correlation along with the time dimension has also been analyzed. And the relationships between the upstream and downstream wind farms and wind farm group

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由于风资源分布的地理特点，风电场通常建在自然环境相对恶劣的区域，且分布范围广，不利于集中化管理，造成大量的人力资源浪费。区域风电场群统一调度系统的应用，对地理位置分散的风电场进行统一的生产管理发挥了重要作用。本文在对风电场群统一调度系统应用理念和技术手段进行实际应用后进行深度总结和提炼，阐述了风电场群统一调度系统在实际生产工作中的优点和成效。该系统的应用不仅实现了对各风电场实时运行工况和设备状态的监管，还便于管理人员统筹安排风电场的各项管理工作，真正实现了风电场群生产管理的专业化、信息化、智能化。
Due to the geographical characteristics of the wind resource distribution, wind farms are usually built in the relatively poor environment, and the distribution range is wide, so it is not conducive to centralized management and wasted much resources. Te application of regional wind farms unifed dispatching system played an important role on unifed management. Tis article carried out a summarization and refning of the wind farms unifed dispatching system in practical application from both conceptual and technical perspective. Meanwhile it demonstrated the strong points and achievements of the unifed scheduling system for wind farm cluster. With the application of the unifed scheduling system, the real-time load of each wind farms was monitored and helped the managers to perform the comprehensive arrangement of the operation mode of the wind farm, therefore it made the production information collect system professional, networked and intelligent.

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随着风电场规模不断的扩大，其输出功率的波动性对电网的安全经济运行带来的不利影响也越发明显。把握风电场输出功率波动特性是开展风电联网运行分析的迫切需求，直接关乎到分析结果的准确性、合理性。由于风电场输出功率取决于自然风速，各机组安装处所感受到风速存在时空差异性，直接导致了同一风电场内部不同位置的机组出力的差异，即输出功率的分散性。为描述风电场内各机组输出功率的分散性，本文提出一种处理风电场静态功率等值分散性问题的等效风速法。利用等效风速作为风电场等值模型的输入，解决了传统风电场静态等值模型无法解决风电场出力的分散性问题，提高了等值模型的精度，对准确评估风电场联网运行性能具有重要作用。有助于电网调度合理安排生产计划，减少系统备用容量，提高含大规模风电场电网运行安全性和经济性。
With the enlargement of the scale of the wind farm,the disadvantages which arise out of the fluctu-ant of wind power increasingly become obvious. To master the fluctuant characteristics of wind power is a press-ing requirement for accurately and reasonably analyzing the grid-connected wind farm. Because of the output of wind generator depending on wind speed and different situation of the wind turbines,wind generators which lo-cate in different position have different power output. That is so-called dispersion. To describe the dispersion of each unit power output in wind farm,this paper proposed an equivalent wind velocity method of processing stat-ic wind power dispersion. The equivalent wind velocity is used as input of the equivalent model to deal with the wind power dispersion. This method improves the accuracy of wind model and is of great importance of assess-ing the performance of a wind farm,which can be used to evaluate the impact of wind farms to the power grid, hel

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近年来，风资源丰富的区域受到资源和规模等因素的限制，人们悄然把目光转向更为广阔的低风速区域，而风电机组发电量直接影响风电场经济效益。安徽来安低风速风电场作为全国首个低风速风电场，至今已运行两年多。本文针对影响低风速风电场发电量的因素，制定风电机组各种优化方案，对比分析来安风电场各项提升发电量测试方案的初步结论，提出进一步提升发电量的改进措施，为今后风电场设计、建设、生产运行提供参考。
In recent years, wind resource in rich region is limited by the resources and scale factors, people quietly turned to broader area of low wind speed, wind turbine power generation directly impacted on the economic efciency of wind farms. As the country''s frst low speed wind electric feld, Anhui Laian low speed wind farms has been running for two years, according to the factors that afect low speed wind farm generating capacity, this paper analyzed various wind turbine optimization programs and the power generation test solutions, then provided a reference for future wind farm design, construction, production and operation.

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为评估风电场的接入对电压暂降的影响,提出一种考虑风电场固有不确定性的电压暂降评估方法。基于尾流效应的影响,以风速作为机群划分指标,建立风电场的等值模型。利用风电场出力的概率模型,将风电场的出力划分为几种场景,在此基础上得到风电场出力的不确定性对电压暂降影响的评估结果。基于PSCAD对IEEE 30节点进行仿真,仿真结果与未考虑风电场不确定性的结果进行比较,发现所提评估方法得出的暂降评估结果更结合实际,更能满足工程实际需要。
In order to evaluate the effects of wind farm on voltage sag, a voltage sag assessment method was presented, which considers the inherent uncertainty of wind farm. Based on the influence of wake effect, the wind farm equivalent model was established, regarding the wind speed as the cluster classification index. Using the probability model of wind farm output, the output of the wind farm was divided into several scenarios, the evaluation result of voltage sag was received considering the uncertainty output of wind power. Based on PSCAD software, this paper simulated on the IEEE 30-bus system, compared the simulation result with the result without considering the uncertainty of wind power. The simulation results show that this method is more practical and it meets the needs of the engineering practice better.

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近年来，风力发电行业发展迅猛，风电场的安全运行日益受到关注。雷电灾害成为影响风电场正常运行的主要气象灾害，因雷击造成风电机组、箱变及其附属电气设施损坏，导致严重经济损失的情况时有发生，风电场的防雷保护现状和形势已不容乐观。该文以云南某高海拔风电场为例，在实地考察、数据采集的基础上，结合高原山地的特殊环境、风电场所在区域的雷电活动情况及土壤电阻等条件，分析风电场存在的雷击风险，提出相应的雷电灾害防御措施，从而为风电场的防雷保护提供技术参考。
With the rapid development of wind power industry,safe operation of wind farms become more and more concerned.Lightning disaster is one of the most important factors which affect the normal operation of wind farms,more and more wind turbines,voltage transformers and affiliated facilities have been damaged by lightning stroke.Lightning accidents occurred frequently in Yunnan,the situation of lightning protection for wind farm is not optimistic.Taking a wind farm in Yunnan as an example,based on the fieldwork,comprehensive analysis and data access,combined with the lightning activity of wind farm,the area where the geologic and topographic conditions, soil resistance and other conditions,the analysis analyze the lightning risk in the wind farm,then provides some technical measures which have important significance to defense and reduce the lightning disaster in wind farm.

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