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Abstrakt

With the rapid development of distributed photovoltaic grids, more and more users join the power sales side, and the traditional power grid operation mode is no longer applicable. This paper analyzes the characteristics of the distributed photovoltaic grid under overload conditions, and further summarizes the problems that the distributed photovoltaic grid will face under these conditions. To solve these problems, the alliance chain technology was introduced into the distributed photovoltaic grid.At the same time, this paper establishes a photovoltaic pricing strategy that considers power transmission loss. Finally, the feasibility of the theory is verified by constructing a virtual model.
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Bibliografia

[1] Zhou Jingjing, Study on the construction and evaluation of China’s energy dependence index, Master Thesis, China University of Mining and Technology, Xuzhou City, Jiangsu Province (2019).
[2] Building a “global energy Internet”" to promote the sustainable development of world energy, Journal of State Grid Institute of Technology, vol. 18, no. 05, p. 86 (2015).
[3] Zhang Chuangyang, Study on the economy of centralized photovoltaic power generation in China, Master Thesis, North China Electric Power University, Beijing (2018).
[4] Yang Xiu, Guo Chenji, Summary of light HVDC transmission, East China Power, Proceedings of the 24th Annual Meeting of Power System and Automation Major of China Higher Education Institutions (Volume I), The 24th Annual Meeting of Electric Power System and Automation Major in Chinese Universities, Beijing, China, vol. 37, no. 04, pp. 606–610 (2009).
[5] Hossain M.F., Solar energy integration into advanced building design for meeting energy demand and environment problem, Int. Journal of Energy Res., no. 40, pp. 1293–1300 (2016), DOI: 10.1002/er.3525.
[6] Lund P.D., Clean energy systems as mainstream energy options, Int. Journal of Energy Res., no. 40, pp. 4–12 (2016), DOI: 10.1002/er.3283.
[7] Begovic M.M., Insu Kim, Damir Novosel, Julio Romero Aguero, Ajeet Rohatgi, Integration of Photovoltaic Distributed Generation in the Power Distribution Grid[P], System Science (HICSS), 45th Hawaii International Conference on System Sciences (2012), DOI: 10.1109/HICSS.2012.335.
[8] State Council, Several opinions of the State Council on promoting the healthy development of photovoltaic industry (excerpts), Information technology and informatization, vol. 4, p. 1 (2013).
[9] Wang Bohua, Development status and Prospect of China’s photovoltaic industry, Power equipment management, no. 02, p. 27 (2019).
[10] Jianguo Qian, Bingquan Zhu, Ying Li, Zhengchai Shi, Research on operation fault diagnosis algorithm of power grid equipment based on power big data, Archives of Electrical Engineering, vol. 69, no. 4, pp. 793–800 (2020).
[11] Wei Min Zhang, Yan Xia Zhang, The reactive power and voltage control management strategy based on virtual reactance cloud control, Archives of Electrical Engineering, vol. 69, no. 4, pp. 921–936 (2020).
[12] Yang Xuanzhong, Zhang Zhebo, Distributed power transaction method with security constraints based on blockchain, China Power, pp. 1–10 (2019).
[13] Ju Yanfang, Research on risk assessment and guarantee mechanism of distributed energy transaction, Master Thesis, North China Electric Power University, Beijing (2015).
[14] Hou J., Wang H., Applying the blockchain technology to promote the development of distributed photovoltaic in China, Int Journal of Energy Res., no. 42, pp. 2050–2069 (2018).
[15] Harinder Pal Singh, Singh Brar Yadwinder, Kothari D.P., Reactive power based fair calculation approach for multiobjective load dispatch problem, Archives of Electrical Engineering, vol. 68, no. 4, pp. 719–735 (2019).
[16] Qi Bing, Xia Yan, Photovoltaic trading mechanism design based on block chain incentive mechanism, Power system automation, vol. 43, no. 09, pp. 132–139+153+140–142 (2019).
[17] Yang Changhui, Ge Zhixiang, Research on online pricing of distributed photovoltaic power generation, Price Theory and Practice, no. 04, pp. 51–55 (2018).
[18] Ma Guoqing, Study on the pricing mechanism of green energy generation side, PhD Thesis, Hebei University of technology, Tianjin (2010).
[19] Zhang Hailong, Research on China’s new energy development, PhD Thesis, JilinUniversity, Changchun City, Jilin Province (2014).
[20] Xue Meidong, Research on optimal configuration and energy management of microgrid, PhD Thesis, Zhejiang University, Hangzhou City, Zhejiang Province (2015).
[21] Gerilemandahu, Research on investment benefit and financial support of distributed photovoltaic power generation, Master Thesis, North China Electric Power University, Beijing (2016).
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Autorzy i Afiliacje

Ran Ding
1
Chaohan Feng
1
Dongsheng Wang
1
ORCID: ORCID
Rongfu Sun
1
Longyang Wang
2
Shaojun Yuan
3

  1. Dispatch Center, State Grid Jibei Electric Power Company, 56 Caishikou South Street, Xicheng District, Beijing, China
  2. School of Mechanical and Electronic Engineering, Wuhan University of Technology, China
  3. Chengde Power Supply Company, China

Abstrakt

In this study, the effect of heat treatment on the microstructure and mechanical properties of 2209 duplex stainless steel fabricated by wire arc additive was analyzed. It was found that solution treatment at 1100°C for 2 hours and tempering at 300°C for 2 hours can effectively improve the grain inhomogeneity of 2209 duplex stainless steel, eliminate γ2 and harmful brittle phases, and take into account the mechanical properties and corrosion resistance. Compared with the original deposition state, the hardness and yield strength increased by 10% and 31.8% to 245.6 HV and 499.7 MPa, which meet the requirements of engineering propellers. Electron back-scattered diffraction studies showed that the grains became refined and austenite maintained <101>//Z orientation after solution heat treatment. Many small-angle grain boundaries were present in both the original sample and the solid solution, but further tempering transformed the small-angle grain boundaries into large-angle grain boundaries.
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Autorzy i Afiliacje

Long Zhang
1
ORCID: ORCID
Liang Liu
1
ORCID: ORCID
Feihong Liu
1
ORCID: ORCID
Jian Sun
2
ORCID: ORCID
Dongsheng Wang
2
ORCID: ORCID

  1. Anhui University of Technology, School of Metallurgical Engineering, Ma’anshan 243002, China
  2. Tongling University, Key Laboratory of Construction Hydraulic Robots of Anhui Higher Education Institutes, Tongling 244061, China

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