浅谈光伏电站电缆成本对比

降本增效是光伏电站一直追求的目标,而选择合适的电缆规格及合理布置电气设备位置,能节省光伏电站材料成本。从设备布置位置和电缆敷设方式的角度对已完工的地面光伏电站和分布式光伏电站的光伏方阵设计方案进行对比,并以某风光互补型光伏电站为例,对电缆实际敷设过程中的影响因素及施工管理进行分析。分析结果显示:1)对于地面光伏电站单个光伏方阵而言,无论是使用铜芯电缆还是铝合金芯电缆,采用箱逆变一体机时的单瓦电缆成本均优于采用组串式逆变器时的单瓦电缆成本。2)对于分布式光伏电站而言,当采用铜芯电缆时,组串式逆变器以集中式排布时光伏电站单瓦电缆成本较低;当采用铝合金芯电缆时,组串式逆变器以分散式排布时光伏电站单瓦电缆成本较低。3)在电缆实际敷设过程中,其用量极易受到地形、光伏支架结构形式、光伏支架倾斜面最低点离地高度、电缆敷设深度、设备安装高度等因素的影响,使其实际用量大于布线软件的设计用量。以期本研究可为今后光伏发电项目电缆敷设方式及电缆选型提供参考。

CaCO_3在PVC电缆料中的应用

研究了普通CaCO3填充PVC电缆料的性能,结果表明,理化性能符合要求、杂质含量在极限范围内的普通CaCO3在配方设计合理的情况下可用作PVC电缆料的填料,生产的PVC电缆料J70完全符合国家标准,可以替代活性CaCO3,降低电缆料生产成本。

The Use of Life Cycle Cost Analysis to Determine the Most Effective Cost of Installation High Voltage Undersea Cable Bali Strait

Indonesian National Electricity Company （PT.PLN （Persero）） has planned to install additional high voltage undersea cable for circuit llI and IV Java-Bali to fulfill electricity demand in Bali. This project was more prefered compared to building another power plant in Bali which could raise social and cultural resistance. Life cycle cost method was used to complete the financial feasibility study to ensure if the project has economic benefit, and the asset would be used effectively and efficiently along its benefit period. In this paper, a life cycle cost will be simulated to analyze which alternative is the most profitable： installation circuit III and IV in 2012 or installation circuit III in 2012 and circuit IV in 2017 in accordance with load forecasting demand. This study is used to help the management to make a decision about the project.