In the late 1980s, the famous Chinese scientist Academician Qian Xuesen summarized the concept of open and complex giant systems. Later, together with his two right assistants and students Yu Jingyuan and Dai Ru, he published “A New Field of Science-Open Complex Giant System and Its Methodology” for academicians. They believe that for some extremely complex things in nature and human society, from the point of view of systems science, they can be described by open complex giant systems, and to deal with such open and complex giant systems, at present can only be used from qualitative to qualitative Quantitative comprehensive integration method. Because the so-called “complex” refers to the diversity of influencing factors and the complexity of the hierarchical structure contained in the actual project engineering.
As a new high-tech science and technology, solar energy has a series of discontinuous correspondences between parts and the whole. Therefore, it is impossible to use partial or partial knowledge to try to arrive at a standardized solution that is universal. plan. In fact, during the implementation of solar energy system engineering, it is widely involved in building structure design, roof structure and load-bearing, planning and utilization of façade auxiliary space, system water supply and drainage, technical design of electrical circuits and information pipelines, and their connection and installation. The coordinated layout of hot water system equipment, the organization and management of construction site construction, and the coordination of the needs of owners and users with the opinions and interests of related parties, etc. The solar energy engineering technology itself also involves the operation mode of the solar energy system, the selection of information collection components, the configuration of energy storage devices, auxiliary energy systems, the selection of control schemes, the planning of the overall system structure, the detailed design of the engineering structure, and new technical standards. The implementation of the project area, as well as the collection and balance of relevant information and data and constraints on the geography, meteorology, light and heat resources, atmospheric environment, urban management, etc. of the project area.
The unique academic theories, technical knowledge, and practical experience of the individual solar energy participants in the project are combined into a complex giant system. By balancing each other’s concerns, demands, contradictions, common points and expectations, qualitative and quantitative analysis is carried out. In the end, the correct conclusion can be achieved that all parties are satisfied, that the economy and technology are reasonable, and that are in line with innovative ideas and scientific norms. In other words, the solar energy system project itself is an open complex giant system. To handle this open complex giant system well, we have to follow what the scientists represented by Qian Xuesen put forward: the method of dealing with the open complex giant system is a comprehensive integration method from qualitative to quantitative; from empirical assumptions (conjectures or judgments) ) Start, and then proceed with the teaching of obtaining conclusions through quantitative methods. In terms of its essence: it is to organically combine expert groups (experts in various fields), data and various information with computer technology; combine scientific theories, empirical data and human professional knowledge of various disciplines; and These three constitute a unified and coordinated system. The successful application of this method lies in the utilization of the overall advantages and comprehensive advantages of this system. The application of this method should be divided into several steps: first, clarify the task and purpose; second, obtain as much qualitative knowledge and experience suggestions as possible; third, establish a system model combined with survey data; fourth, listen to experts And users’ inquiries and suggestions and revisions that are in line with objective reality; in the end, it is possible to obtain scientific conclusions of qualitative analysis and quantitative planning that are satisfactory to all parties.