Core Abilities Evaluation Index System Exploration and Empirical Study on Distributed PV-Generation Projects

Abstract

Abstract:In line with the constraints of environmental problems and economic development, large-scale renewable-generation projects have been planned and constructed in recent years. In order to achieve sustainable power development and improve the power supply structure, China's government has focused on distributed photovoltaic (PV) generation projects due to their advantages of clean emission and local consumption. However, their unstable output power still brings a series of problems concerning reliability, investment income, and available substitution proportion to traditional power, and so on. Therefore, it is imperative to understand the competitive development abilities of distributed PV generation projects and measure them effectively. First, through various investigation methods such as literature reviews, feasibility report analysis and expert interviews, the factors that influence the core abilities of distributed PV-generation projects were explored based on the micro-grid structure. Then, with the indexed exploration results, the factors were classified into 6 dimensions, i.e., investment and earning ability, production and operation ability, power-grid coordination ability, energy-conservation and emission-reduction ability, sustainable development ability, and society-serving ability. Meanwhile, an evaluation index system for core abilities of distributed PV-generation project was constructed using all quantitative indicators. Third, for examining the availability of the evaluation index system, combination weighting and techniques for order preference by similarity to an ideal solution (TOPSIS) methods were adopted to assess the practical distributed PV-generation projects. The case study results showed that installed capacity, local economy development, and grid-connected power quantity will influence the core abilities of distributed PV-generation project, obviously. The conclusions of the evaluation analysis on core abilities can provide useful references to operate and manage distributed PV-generation projects and promote their sustainable and health advantages. The proposed evaluation index system can also be used to assess power-generation projects in other types of energy, such as wind power and hydropower.

Critical Lines Identification for Skeleton-Network of Power Systems under Extreme Weather Conditions Based on the Modified VIKOR Method

“…To further demonstrate the effectiveness of the MMVIK method for critical lines identification, five methods, i.e., single-attribute evaluation method based on the rate of change of network efficient (SRCNE) [8], single-attribute evaluation method based on hybrid flow betweenness (SHFB) [11], multi-attribute evaluation method based on utility theory and cooperative game (MUTCG) [15], SWA [28] and TOPSIS [29], are employed for comparisons. The final line importance evaluation results and the top ten lines of the actual regional Guangdong power system obtained by the six methods are shown in Figure 4 and Table 6, respectively.…”

“…In traditional multi-criteria decision making methods, such as weighted method of simple additivity (SWA) [28] and technique for order preference by similarity to an ideal solution (TOPSIS) [29], only the overall performance of the evaluated object is considered, but the evaluated object' outstanding performance on single index is seldom considered. In practice, the VIKOR method is a compromise method to solve decision problems with conflicting complex systems, which has been widely applied in multi-attribute decision-making problems [30,31].…”

An Approach for Estimating Solar Photovoltaic Potential Based on Rooftop Retrieval from Remote Sensing Images

“…Rapid economic development has brought about resource over-consumption, environmental pollution and ecological damage [1]. One of the most efficient solutions to these problems is to shift from fossil fuel power generation to renewable energy [2]. In 2016, the share of PV electricity production represented 1.5% of all electricity produced globally, the global solar PV capacity was 303 GW and China's 77.4 GW [3].…”

Improving Design Performance by Alliance between Contractors and Designers in International Hydropower EPC Projects from the Perspective of Chinese Construction Companies

“…With the pressure of controlling climate change [1], hydropower, as a renewable energy, is a significant way to reduce greenhouse gas emissions, and the development of hydropower has become a trend for implementing the long-term strategy for sustainable energy worldwide, especially in developing countries of Asia, Africa, and Latin America [2][3][4][5]. For example, hydropower accounts for 99% and 85% of all electricity supply of Zambia and Brazil, respectively [6][7][8].…”