查询词典 hydropower

One hydropower station is the second class hydropower station, The hydropower station adopts guide water to generate electricity, The control of dams gate is made up of the Spillway sluice, Flushing sluice, Breast wall and pump for deep well, Because the original system adopts the routine to control, Dependability is low, Do not accord with the request that the computer monitoring, So It is essential for the original control system to renew.

某电厂为二级电厂，电站采用引水发电，坝区闸门控制由溢洪闸、冲沙闸、调压井等组成，由于原系统采用常规控制，可靠性低，不满足计算机监控的要求，为此对原控制系统进行改造。

In the process of researching, the writer points out the development condition of our country current asset of hydropower and some problems existed in the development process basing on the condition of our country's hydropower resources.

由于水能资产价值核算是水能资产价值实现的前提，所以本文对水能资产价值的核算理论做了简单的介绍。在此基础提出了本文的重点研究的内容，即水能资产价值实现问题。

China is abundant in micro-hydropower resources; therefore, the project about the electrization for rural micro-hydropower and micro-hydropower fungible is of benefit to nation and people.

中国的小水电资源十分丰富，水电农村电气化及小水电代燃料工程是一项符合国情，顺乎民意的德政工程，小水电建设在国民经济发展和社会进步中发挥着不可替代的历史作用。

As the clean, non-pollution, recycling utilized energy, small hydropower is an essential parts of Chinese strategy of continuous development. China offered a series of preferential policies on the different development periods of the small hydropower and the development of small hydropower had achieved outstanding accomplishment. Due to the absence of the social benefit and ecological benefit assessment in the economic assessment of the small hydropower, the netting electrovalence is irrational, the operation and maintenance on the small hydropower becomes difficult, and it will cause the lack of competitive ablility in the electricity market.

正因如此，中国在小水电发展的不同时期制定了一系列优惠扶持政策，小水电发展也取得了举世瞩目的成绩，但是就目前情况而言，由于小水电的经济评价中的社会效益和生态效益评价缺失，造成小水电上网低定价机制，从而导致了小水电站运行和维护困难，以及在电力市场中缺乏竞争力。

The main study in the paper is as follows: Firstly, discussing the purpose of carrying on hydropower units fault diagnosis, then, introduce state of the art and classical method in the field of fault diagnosis in hydroelectric sets. The mechanism, major failure and failure symptom of hydropower units, three methods that can identify unit's vibration fault. With the key technology of monitoring on hydropower sets together with the viberation signal-disposed and fault feature-extracted are analysised.

本文主要进行了以下工作：从水电厂实际出发，阐述了开展水电机组故障诊断研究的重要意义与目的，简要介绍了国内外水电机组故障诊断技术发展现状以及目前应用于故障诊断领域的常用方法，系统地分析归纳了水电机组振动的机理、主要故障及其故障征兆、识别水电机组振动故障原因的三种方法，以及水电机组监测的关键技术和故障特征提取技术。

The result shows that, the Direct Power Supply Model is inexorable selection of the whole social and economic development and the Yangtze River Power Corporation development. It also assesses one proposed strategy and finds that the active participation in price competition for networking, may help display the obvious low cost advantage of the hydropower enterprise, and the strive for direct power supply may afford more opportunity for the low cost enterprise to touch some of the end users. This not only helps to break the monopolized (currently an actually single agent) power purchase system, but also creates a policy advantage which helps the local areas to directly use the local water resources to develop large industries (for adjusting the industrial structure, increasing employment and especially for the relocation of emigrants). It also helps to develop the regional economy. Besides, this strategy will also promote the cooperation with other related enterprises, and thus promote the development of a multiple-element industry. Because the Direct Power Supply Model can make the low cost hydropower firm master partly terminal customers, then it is a normous chance for the low cost hydropower firm.

研究结果表明，直供电商业经营模式是中国整个社会经济发展和长江电力公司企业发展的必然要求和选择，在理论和实践也是切实可行的；直供电商业模式不局限于定向"电力公司"——电网购电客户，也应可约定直接向大用户，这样可以使低成本的水电公司有机会掌握部分终端客户，这除了可以打破当前实质上的单一主体的垄断购电体制外，还可以为直接利用当地水能资源、发展大工业、调整产业结构、增加就业尤其是安置移民、进而创造相当的政策性优势，进而促进区域经济发展，同时，还将有利于促进本企业与有关企业合作，发展相关多元化产业；由于直供电商业经营模式可以让低成本的水电公司掌握部分终端客户，所以对低成本的水电公司是一个巨大的机遇。

With the swift development of the hydroelectric project in our country, a set of large or extraordinary hydropower stations are being designed or constructed, such as the Three Gorges hydropower station, Longtan hydropower station, Xiangjiaba hydropower station, Xiaowan hydropower station, Pengshui hydropower station etc. All these hydropower stations adopt underground workshop, and have long diversion pipe system, and have one or two surge-chambers or adopt tailrace tunnel with sloping ceiling.

随着我国水电事业的迅速发展，一批大型、特大型水电站正在设计或处于待建之中，如三峡水电站、龙滩水电站、溪洛渡水电站、向家坝水电站、小湾水电站、乌江彭水水电站等，这些电站多采用地下厂房，具有较长的引水发电系统，并且设有调压室或采用变顶高尾水洞。

Since the formation of the company since the output value, profits and taxes increase, the annual average rate of increase of 42%, The products sell well in 30 provinces and cities, and exports in Nigeria and other non-state country, which for Baishan Hydropower, hydropower plant Yunfeng, Taipingwan hydropower plant transformation VVVF 250t crane for the transformation of energy-saving cycle Karamay sewage treatment equipment, scientific and technological progress awardsby Japan Ling electricity companies and the industry's highly praised,"Lu line" brand crane was rated as one country and other goods, an annual output value of 260 million yuan, profits and taxes 26 million yuan.

公司自组建以来，产值、利税大幅度增长，年平均递增率42%，产品畅销全国30个省市，并出口尼日利亚等非州国家，其中为白山水电厂、云峰水电厂、太平湾水电厂改造的250t变频调速起重机，为克拉玛依改造节能循环污水处理设备，获省科技进步奖，受到日本凌电公司和同行业的高度赞扬，&鲁行&牌起重机被国家评为一等品，年产值达2.6亿元，利税2600万元。

While researching the optimal operation of hydropower station, it is essential toconsider the optimization of operating efficiency, vibration characteristics of unit andthe safety of electric power system meanwhile. The researches of optimal operation ofLijiaxia Hydropower Station of two-row placed units are as follows: 1. Summarizes the operation experience of Lijiaxia Hydropower Station in recentyears, analyses the demands to the operation of station, provides the problems existedand the research direction of optimal operation.

在电站的运行优化研究同时考虑电站的运行效率的优化、运行状态的优化和电网安全问题是必要的，针对李家峡双排机的水电站的优化运行问题开展以下几方面的研究：(1)总结近几年来李家峡电站的运行经验，分析电网对李家峡电站运行的要求，提出了运行存在的问题和优化运行的研究方向。

The fore bay of Heihe Longhui Hydropower Station designed by the company, is the existing biggest tunnel fore bay in China, which is height of 21m, width of 16m; for the large-span dome of surge tank of Baishuijiang Shiji Hydropower Station, which is the first project equipped with rapid-drop gate in surge tank in Gansu Province, the company adopted pre-stressed anchor cable to complete the dome's excavation and supporting at the same time, thus reduced the completion period and investment; for the diversion tunnel of Fuchuan Hydropower Station, which is the biggest non-pressure diversion tunnel in Gansu Province, with span of 9m, height of 11m, the company adopted half-tunnel supporting structure, thus reduced the project investment.

黑河龙汇水电站前池是目前国内最大的洞内式前池，跨度16m、高度21m；白水江石鸡水电站调压井大跨度穹顶采用预应力锚索技术，分瓣开挖一次支护完成，节省了工期和造价，同时是省内第一座在调压井内设置快速闸门的工程；福川水电站引水隧洞是甘肃省内最大的无压引水隧洞，跨度9.0m，高度11m，采用半洞支护结构，在满足安全的前提下节省了工程投资。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。