What is Power Engineering?

Electric power engineering (electric power engineering), that is, the engineering related to the production, transmission, and distribution of electrical energy, also includes engineering that uses electricity as power and energy in various fields in a broad sense. At the same time, it can be understood that the power transmission and expansion industry expansion project.

I. Management System of Electric Power Survey and Design Institute

1. Management System Factory of Design Institute

Designing the management system of the institute, from the perspective of administrative division of labor, the Planning Division is responsible for production task arrangement and balance, and the Technical Division is responsible for quality improvement and improvement. The production department is responsible for engineering design, and the technical and economic department is responsible for investment control (including quota design, and the quality management of each department is guided and supervised by the overall quality management office.

2. Management system for specific projects

The chief engineer of the design is responsible for the overall responsibility of the project. Its main responsibility is to be responsible for external communications, to work with relevant departments on the formulation of major plans, and to coordinate and coordinate the various professions. Ensure the completion of the construction period. The chief engineer of each profession (including the professional engineer of the technical department) shall be responsible for the quality of the profession. Examination of the project's prior guidance, intermediate acceptance, drawings and descriptions, assisting the host in drafting a design plan and formulating quality management measures for the profession. A major designer is set up for each major. In addition to being responsible for external coordination and communication, the division of design within the major is coordinated by the chief of section and the chief engineer to ensure that the design plan formulated is carefully implemented and tasks are completed on time. The chief engineer mainly guarantees the quality of the finished products discharged from the hospital. For major plans, it is necessary to check in advance whether they are in line with the Party's guidelines and policies, and whether they are reasonable, economical, and reliable. The design of a specific project generally requires preliminary feasibility studies. Feasibility study. There are 4 stages of preliminary design and construction drawing design.

2. Preliminary feasibility study

1.Principle of the preliminary feasibility study (i.e. planning and selecting plants)

According to the regional load growth situation or the desire to transmit power, the local government planning department first proposed the plan, and suggested that the capacity of the unit, the method of connecting the system and the time should be installed in the local area, and then submitted to the design institute for planning and plant selection. In the initial feasibility study, it is generally set up by the general manager and equipped with several specialties such as general manager, system, water supply, and coal transportation. Civil and electrical personnel can also participate, but the workload is not large. The survey office must have hydrological, geological, and survey personnel to participate, and put forward the possibility of building a plant. Selecting several sites should be selected for the plant selection. After screening and queuing up, 2 ~ 3 ideal plant sites are proposed as the recommended scheme for the review of the delay and as the recommended plant sites for the next stage of project selection.

2. Sequence of preliminary feasibility study

(1) Preparation stage. After the general manager accepts the task, the professional staff of the organization shall start with internal preparation of the materials, such as initially determining the installed capacity, collecting sites of the same type of engineering, estimating the demand for coal, ash, water, etc., and preparing to select a plant to search for capital. After the preparation work is completed, contact the power company and the construction unit to determine the plant selection date.

(2) Planning and selecting plants. The design institute, together with the power company and the construction unit, form a plant selection team. Talking about and signing agreements with relevant units. For example, sign a railway junction with the railway department for coal consumption and guarantee rate: the degree of guarantee of water consumption: ask the local surveying and mapping bureau for 1/50000 terrain enclosure, and understand the local geology, earthquakes, etc .: the amount of land and its possibility, etc. ,

(3) Scheme comparison. Preliminary Luss after passing several sites. Compare plans indoors. Initially put forward the possibility of more than two factory sites, and then report to the province or region, put forward the reliability of the initial agreement and the economic rationality of the plan, and obtain the consent of the province or region. After the plant selection is completed, the competent department will report the "project proposal". After the approval of the National Development and Reform Commission, the next step can be carried out. The results of the preliminary feasibility study must have a description and attachment (topographic map), and the recommended site address must be accompanied by an agreement signed with each unit.

Feasibility study

1. Principles of feasibility study (i.e. engineering selection)

The feasibility study is based on the approved preliminary feasibility study and the project proposal approved by the National Development and Reform Commission, to further implement the conditions for building the plant, and to carry out the necessary hydrometeorology and hydrogeology of the water supply source. Engineering geological exploration work and hydraulic model tests. The feasibility study of the reconstruction of the station and the station, the connection of the special line, the coal terminal and the special water supply reservoir also need to be carried out simultaneously. For power plants built in mountainous areas, issues such as slope stability and adverse geological phenomena, environmental impacts, and reduction of earthwork volume should be emphasized. The Design Institute, together with the power company and the construction unit, have studied major technical and economic principles and implemented various plant construction conditions (such as coal sources, water sources. Ash yards, transportation, special line connection, land use, demolition, environmental protection, exit corridors, geology, earthquakes And mining, etc.), and assist the power company and construction unit to obtain a principle agreement or written document from the relevant departments. On the premise of mastering sufficient technical and economic basic data, a power plant access system, principled process system and layout plan are proposed, and after a comprehensive comprehensive technical and economic analysis and demonstration and comparison of multiple plans, specific site and construction recommendations are recommended. The scale of the plant, making recommendations on the selection of main engines and main auxiliary machines, new equipment, new processes, new technologies and plant construction plans; putting forward investment estimates and economic benefits evaluation of power plants, providing a reliable basis for the planning department to compile and approve design tasks . The feasibility study of the expansion and reconstruction of the power plant can also be carried out with reference to the above principles. After the project selection is completed, the design institute should conduct in-depth and detailed demonstration work for each specialty. For several important majors, two to three schemes are proposed, focusing on research. After repeated comparisons, one major scheme is recommended for approval, and the other two schemes are used as supplements, which is the initial basis.

2.Collecting materials and research content in each major in feasibility study

(1) Thermal power load and installed progress, Thermal load and its development forecast and analysis, Power load forecast, Based on thermal charge analysis, a comprehensive load table and typical load curve as design basis are proposed. The nature and scale of the power plant Analyze the installed capacity, unit type, installed progress, and staged construction, and make comments + explain the role and tasks of the power plant in the power system. Investigate the connection scheme between the power plant and the system, and demonstrate the output voltage level and the number of outlet circuits of the power plant, and the power transmission and reception projects and content that are matched with the construction of the power plant.

(2) Fuel supply. Collect the relevant coal reserves, mining volume and construction progress supply quantity, coal burning coal quality (moisture, ash, content, heat generation, etc.). Price and mode of transportation.

(3) Site water source. Explain the water supply source, cooling mode, cooling water volume and the amount of supplementary water required under the conditions of taking water saving measures at each site, propose hydrological reports or preliminary hydrogeological reports for different water supply sources, and obtain the Agree, on the basis of mastering more reliable basic information, put forward preliminary water supply schemes and technical and economic comparisons of various cooling methods.

(4) Ash removal system and ash storage yard. Describe the initial plan of the ash removal system for each site plan, and the length of the ash tube. Conveying height, design requirements for comprehensive utilization. Raise the ash yard

According to the power engineering construction qualifications, the scope of the contracted projects are as follows:
Super Enterprise

Can undertake various types of thermal power plants (including coal, gas, oil), wind power stations, solar power stations, nuclear power stations and auxiliary production facilities, various voltage levels of power transmission lines and substation overall engineering construction general contracting.
Tier 1 Enterprise

Various types of thermal power plants (including coal-fired,

The lack of electricity severely hinders the development of the national economy. The experience of countries around the world shows that the development speed of power production should be higher than the development speed of other sectors in order to promote the coordinated development of the national economy. Therefore, the power industry is also known as the "leading officer" of the national economy.

If China's economic development is compared to the "body", then the construction of electric power projects is undoubtedly the "muscle" that supports the flexible movement of the body. The continuous advancement of electric power engineering construction is like providing unlimited energy to the bones and bones. Abundant energy supply is a powerful guarantee for the effective operation of various body functions.

In 2012, affected by the slow recovery of the world economy and domestic macro-control, China s economic growth continued to decelerate. The annual GDP of the country was 51,923.2 billion yuan, at a comparable price, an increase of 7.8% over the previous year. Since 2000, the speed of China s electricity consumption and production has been higher than the GDP growth rate, which has made the elasticity coefficient of electricity (production and consumption) greater than 1 for a long time. Therefore, the energy consumption per unit of GDP has been difficult to fall, indicating that China s power consumption has a strong momentum. .

During the "Twelfth Five-Year Plan" period, the national power industry investment will reach 5.3 trillion yuan, an increase of 68% over the "11th Five-Year Plan" period. With regard to the construction of power supply projects, the power investment for the Twelfth Five-Year Plan period is about 2.75 trillion yuan, accounting for 52% of the total power investment. In 2015, the nation's installed power generation capacity will reach about 1.437 billion kilowatts, with an average annual growth rate of 8.5%. Among them, hydropower is 284 million kilowatts, pumped storage is 41 million kilowatts, coal power is 933 million kilowatts, nuclear power is 43 million kilowatts, natural gas power generation is 30 million kilowatts, wind power is 100 million kilowatts, solar power is 2 million kilowatts, biomass power generation and other 300 Ten thousand kilowatts.

In terms of power grid construction, the grid investment in the Twelfth Five-Year Plan period is about 2.55 trillion yuan, accounting for 48% of total power investment. In 2015, a three vertical and three horizontal main grid will be formed around the UHV grid in North China, East China and Central China. Ximeng, Mengxi, Zhangbei, and Northern Shaanxi Energy Bases send power to North China, East China, and Central China through three vertical UHV AC channels, and northern coal power and Southwest hydropower to North China, Central China, and Hehua through three horizontal UHV AC channels. The Yangtze River Delta UHV ring network transmits electricity.

The rapid development of power engineering and a reasonable construction structure have provided a strong guarantee for China's economic development. A strong "bones" has promoted the sound and rapid development of our national economy.