随着电网容量和用电设备的增加,用户对供电质量的要求也越来越高。
With the increasing of power capacity and the electric equipment, the customer has asked more about power quality.
他们声称,用陶瓷的高温超导体替换电网中的铜铝线缆,电网容量将提高5倍,同时减少电力浪费。
They claim that by replacing the copper and aluminum wires in the grid with a ceramic, high-temperature superconductor, the lines could have five times the capacity and waste less electricity.
随着我国国民经济的飞速发展,电力负荷和电网容量的迅速增加,配电网的经济运行问题日益受到重视。
With the rapid development of our country national economy, the power grid load and the rapid increase in capacity, distribution network of economic problems have become an increasing importance.
随着配电网容量的不断增大和新型电气设备的大量使用,选择一种合适的中性点接地方式对电网的安全运行越来越重要。
With the increasing capacity of distribution network and new large-scale use of electrical equipment, a suitable neutral grounding more and more important for the safe operation of the power grid.
背景谐波电压不仅与电网中谐波源强弱、网压变化有关,而且与电网容量、结构有关。由于其直接决定电网承受畸变负荷的能力,所以有必要对各种电网的背景谐波状况作全面了解和测量。
The background harmonic voltage is related with not only the power of harmonic sources and variation of power line voltages but also the power system structure and capability.
在这十年期的末期,中国经济正在扩张,超过了国家电网的容量。
Towards the end of the decade, China's economy was expanding past the capacity of the nation's electricity grid.
相反,它的发明者希望这将为电力电网提供急需的存储容量。
Instead, its inventors hope it will provide much-needed storage capacity for electricity grids.
印度计划在截止本月末的当前财政年度里,为其电网增加1000万千瓦装机容量。
India aims to add 10,000 megawatts of power generation capacity to its grid in the current fiscal year which runs until the end of this month.
在没有电网回购(feed - intariff)的情况下,拥有50兆瓦以上容量的风力发电项目需要进行公开招标,低电价成为中标的首要标准。
In the absence of a feed-in tariff, wind power projects with more than 50mw of capacity need to undertake a public bidding process in which low tariffs are the primary criterion for winning.
更准确的预测对输电网运营公司和他们的客户都有好处,因为保存在手边,以备风力下降时需要的化石资源产生的功率容量很少。
More accurate forecasts also benefit grid operators and their customers, because less fossil-fuel-based reserve capacity needs to be kept on hand in case the wind drops.
该算法能有效地考虑系统的容量约束,尤其适用于含大量子馈线和隔离开关的复杂配电网络。
The algorithm effectively considers capacity constraint, and is fit to evaluate the relatively complex distribution systems consisting ofm any sub - feeders and disconnects.
江苏电网在对老线路进行增容改造中,首次采用新型GTACSR288间隙型耐热倍容量导线。
In the capacity upgrade of Jiangsu grid, new GTACSR288 gapped heat resistant up-rating conductor is used for the first time.
此外,安全电价也可以发挥其经济杠杆作用,缓解输电网络阻塞问题和短期容量不足问题。
Besides, as economic leverage the pricing considering system security can play a role in remitting both power network congestion and short-term undercapacity.
另外,大用户还可向执行保险人职能的电网公司购买备用容量,以便及时代替发生停电事故的合同发电商来供电。
Big customers can take out insurance policies for the loss caused by power supply interruption in order to ensure power quality and reduce the risk of power supply interruption.
其次,在实际电网中,并联电容器组的配置包括确定并联电容器组的组数、各组电容器的容量、安装位置及其投切时刻。
Secondly, in the actual electric network, configuration of shunt capacitors includes how to confirm their group number, capacitors, installation position and switched time of each group.
亚临界参数的300MW机组目前已占山东电网发电容量的45.8%,做好机组水汽系统化学监督工作是今后全局化学监督主要的攻坚方向。
Since 45. 8% of electricity in Shandong Grid was generated by subcritical 300MW units, the much better chemical supervision on water and steam system leads to the important direction in future works.
分析了并联侧输入取自电网侧或负载侧及并联侧所起的不同作用时对装置容量及性能的影响。
The different functions of the compensator are analyzed when the input of the shunt side is taken form the source side or from the load side of the distribution system.
用电结构的变化要求大容量机组普遍参与电网调峰。
Change of power consumption structure requires most large-capacity units to be involved in peak load regulation of electricity grid.
合理的无功补偿点的确定以及补偿容量的确定,能够有效的维持系统的电压水平,提高系统的电压稳定性,从而降低电网的网损率。
Ensure Reasonable reactive power compensatory point and capacity, it can be maintained systemic voltage level and improved systemic voltage stability, consequently decrease loss of system.
根据目前我国电网的实际情况和电力电子器件的容量水平,提出了统一潮流控制器的多重化主电路结构。
According to the actual condition of power networks in this country and the present performance of power electronic elements, a multi-circuit structure of UPFC is proposed.
结合上海电网具有短路容量大、电气距离短的特点,提出了使用进口仪器测试工频变化量距离保护的具体方法。
For Shanghai power grid, which has large short circuit capacity and short electrical distance, a method using imported instrument to test power frequency variation distance protection is presented.
再生制动的应用则可进一步减少牵引变电所的安装容量和供电网的能耗。
The installed capacity of the substation and power consumption will be further reduced as applying regenerative braking.
传统的无功优化通常考虑的仅仅是提高电网的电压质量和降低网损,当系统的传输容量有足够的裕度时,这种只考虑经济效益和基本运行约束的做法是适当的。
The general reactive power optimization is only to reduce the loss of the system and improve the quality of voltage, which is suitable when system has enough power capability.
因此,电网短路容量水平必须在运行质量和开关开断能力间折中决策。
Therefore, the short-circuit capacity of the power network must be decided in the middle way between the running quality and the breaking capacity of the switches.
连接在电网中的变压器总容量约为发电设备总装机容量的8~9倍。
The total capacity of transformers connected in electric network is about 8-9 times of installed gross capacity of generating equipments.
通过对2004年夏季华东电网数据的计算给出了弱母线位置以及相应的无功补偿容量。
Through calculations on the data of the Grid in the summer of 2004, the problem buses are located, and the relevant reactive compensation capacity is confirmed.
通过对2004年夏季华东电网数据的计算给出了弱母线位置以及相应的无功补偿容量。
Through calculations on the data of the Grid in the summer of 2004, the problem buses are located, and the relevant reactive compensation capacity is confirmed.
应用推荐