Yin Hanqing, Gui Yuren (Wuhan Power Supply Bureau, Wuhan Wuhan Power Supply Bureau is a large-scale power supply enterprise, under the jurisdiction of 24 grassroots units, responsible for the power supply of 8.3 million people in Wuhan and 8467km2, with 1.08 million power supply customers. 2000 The annual sales of electricity reached 10.4 billion kWh, and the total electricity consumption of the whole society was 13 billion kWh. In 2001, the maximum load reached 3 million kW. With the continuous deepening of the power system reform and the construction of the power market for different types of customers, it is suitable for cold storage. The customers of the heat storage project, we are all seriously helping them to do research and analysis. For customers who are not suitable for cold storage and heat storage projects, they also help to do a good job of electricity analysis and promote their rational use of electric energy. Recently, the cold storage (heat) project has been adopted. Most of the customers are determined after reasonable electricity consultation and argumentation.

Li, especially in the development of the power market, to improve the market share of electricity and energy utilization, the provincial power companies have introduced a series of preferential measures for electricity consumption, which has played a positive role in promoting the application of energy storage technology in our city. As of the first half of 2001, the overall situation has promoted the use of more than 40 electric boiler customers, with a capacity of more than 50,000 kW, has invested more than 30,000 kW of electricity; more than 10 ice storage air conditioning customers, customer capacity of nearly 10,000 kW. 1 Take effective measures, increase publicity, vigorously promote electric boilers, and power storage technology is an important measure to develop the electricity market, cut peaks and fill valleys, increase load rate, and compete with alternative energy sources. One of the target tasks. In order to promote the development of the work, we organized a series of publicity activities: collating and compiling publicity materials on energy storage technology, rational electricity use, electricity price policy, etc., widely publicized in the city, distributing 50,000 copies of publicity materials, and accepting on-site consultation. The leaders of the bureau presided over the symposium of relevant client organizations, introduced energy storage technology, strengthened communication and communication; set up high-efficiency electricity products and reasonable electricity use knowledge publicity columns in the business halls of the city center of each branch office, and qualified business offices. It also set up a “Energy Efficiency Comparison Desk” to establish a large-scale reasonable electricity use billboard of 324m2 in the city center to carry out social publicity propaganda; hold seminars on energy storage technology and business training courses for electricity marketing personnel and electricity inspectors. Both have received significant results.

Change the concept and proactively serve customers. We timely obtain customer electricity information from customer service consultation, project project approval, project project review, telegraph installation, daily power consumption, etc., and take the initiative to provide electric heating for customers. The economic analysis of boilers and ice energy storage air conditioners has dispelled customer concerns.

Since the energy storage air conditioning technology has only been implemented in China in recent years, it has not been widely used, and there is not much accumulated experience. In addition, the electric boiler is forbidden to use when the power is scarce. The boiler market has long been occupied by fuel oil and coal-fired boilers, so that users can save it. Have doubts. It is a lot of difficulty to open up such a market now. However, electric boilers have the advantages of irreplaceable cleaning, convenience and energy saving of other boilers, especially in line with current environmental protection requirements, and have strong market competitiveness. This requires us not only to have the customer's publicity work in place, but also to actively help customers analyze the installation conditions, make economic comparisons, and consider the customer thoughtful. As it turns out, as long as we work in place, it is very promising to truly treat customers as “God”. For example, the recent expansion of the "transfer military training center" project, customers want to go to the central air conditioning and heating system, but the idea of ​​using oil boilers or electric boilers. The customer also made a preliminary budget for the relevant electricity use plan. He believed that the area after the renovation was about 10,000 m2, and the power consumption of the initial design of the electric boiler was 2, and the one-time investment was large. More hesitant.

After receiving this information, the bureau actively organized relevant personnel to take the initiative to provide consulting services. According to the actual situation of the household, after calculation, it is considered that if the electric capacity of the electric boiler is only 1000kVA, and the customer has done a new economic operation of the transformer and the original transformer, the power distribution cabinet, the line transformation plan and the fee reduction The initial budget makes the one-time investment basically within the acceptable range of the customer, and the customer has clearly expressed his intention to use the electric boiler. Another example is the Hubei Provincial Commodity Inspection Bureau oil-to-electric heating renovation project (20,000 m2), the Concord Hospital coal-to-electric heating project (10,000 m2), etc., after many consultations and on-site services, has now entered the equipment bidding stage.

Using price leverage to guide the consumption of electricity storage market In recent years, the provincial power company has introduced a number of preferential measures for electricity consumption. In the specific application, we combine the actual work with customers who use cold storage and heat storage technology and electric boiler projects. In addition to doing a good job in electricity consulting services, we will resolutely deliver them according to regulations. In order to dispel the doubts of customers, we will sign the “memorandum” on the basis of the architectural design drawings and the on-site verification of the customers who intend to use the energy storage or electric heating boilers for the fee reduction, time-sharing and preferential treatment of electricity prices. Written promise. In addition, for such customers, they can basically handle and track the services in a timely manner during the process of applying for electricity. The leaders, professionals in the marketing department and the power supply bureaus have repeatedly visited the site to solve the problems raised by the customers in the project. The problem has been greatly enthusiasm for the demand side management work from the top to the bottom, forming a synergy. In the work of energy storage projects and the promotion of electric heating boilers, we have helped the publicity, program analysis and coordination of relevant departments in the principle of participation but non-interference, and did not intervene in the storage of cold storage and electric boiler equipment. The customer chooses to make the customer really feel that the work we have done is a powerful help for them.

Promotion of energy storage air-conditioning projects, the results of the phase of the project have been adopted or under construction and the proposed energy storage projects have 13, with a total area of ​​866,000 m2, of which there are 6 more than 100,000 m2, the largest thermal storage project in Hubei Cultural City The electric boiler has a capacity of 7 500 kW. There are 4 thermal storage and cold storage projects that have been put into operation. For example, the Wuhan International Convention and Exhibition Center has an area of ​​126,000 m2, using full-storage and full-heat storage schemes, and 5 550RT (cold tons) for cold storage equipment. The main unit and the storage cold storage tank have an energy storage capacity of 13,400RTh, and the heat storage uses three 1800kW electric boilers and a 1106m3 thermal storage tank. Compared with conventional air conditioners, the investment in the entire cold storage air conditioning project is basically flat, while the annual operating cost is saved by more than 400 million yuan, which is only 32. 1>. Wuhan Ramada Hotel (four stars) 40,000 m2 cold storage Compared with the conventional air-conditioning system, the comprehensive investment has not increased, and the distribution capacity has been reduced by 550kVA. After more than one year of operation test, the peak power load can be reduced by 500kW, the peak power is reduced by more than 500,000 kWh, and the low-level power is increased by more than 500,000 kWh. From the recent joint test results of the Central South Architectural Design Institute, the French SEAT company and the hotel owners, the average daily electricity cost savings of 5,000 yuan, compared with the conventional air conditioning system electricity expenses is only 41>. From the Ramada Hotel financial account From the point of view, the air conditioning system in the store in July, August and September accounted for about 70% of the total electricity consumption of the hotel, while the air-conditioning electricity expenditure only accounted for about 30% of the entire hotel's electricity bill, and the annual electricity cost could be saved by 700,000 to 800,000 yuan. The economic effect is very obvious, and fully meet the technical indicators of the original design. With the acceleration of the opening up of Wuhan and the development of economy and society, new projects using energy storage technology will show an upward trend. In addition, we will analyze the fuel and coal-fired boiler customers in the city one by one. The door-to-door and customers will discuss the possibility of “oil-to-electricity, coal-to-electricity” and further expand the application range of electric boilers.

Existing problems and countermeasures Power demand side management is the main component of power marketing. Doing well the application of energy storage technology and electric heating boilers is conducive to the development of power supply and sales expansion, which is conducive to improving grid load rate and power consumption. Efficiency is conducive to reducing the operating costs of customers, and it is indeed a good measure to benefit from many parties. However, from the current internal management assessment method of power companies, this work benefits the system and the power plant, while the power supply enterprise is damaged. The more the storage equipment is promoted, the more the average price of electricity is reduced, which affects to a certain extent. The enthusiasm of the power supply enterprise to carry out this work, it is recommended to modify the relevant internal business evaluation indicators as soon as possible.

Judging from the current actual work, we have insufficient capital investment compared with other enterprises (such as telecommunications) in terms of the scale and intensity of publicity. According to the propaganda and promotion work of the demand side management, the relevant expenses incurred can be arbitrarily listed in the management expenses, and it is hoped that it can be implemented.

Judging from the preferential electricity consumption measures introduced at present, the use of energy storage technology is more effective for the implementation of commercial electricity price customers, and the benefits for other electricity price customers are worse. The corresponding countermeasures should be considered for this situation.

Standardize the quality management of power storage products manufacturers, ensure a good market order for power storage products, strengthen the horizontal linkages between power, environmental protection, planning committee, planning, architectural design and other departments and establish effective information channels and cooperation mechanisms. Further development of the work. !

(Responsible editor Hu Hongsheng) Kunming developed into a solar water heater for all-day heating According to Xinhua News Agency, the multi-stage circulating solar water heater invented by Kunming Xinghuo Energy Conservation Research Institute has been put into use in a large area, which not only solves the cold water and hot water mixing of general solar water heaters. And the problem of unable to supply hot water on cloudy days, and the efficiency of hot water use has increased 20>. It has been praised by experts as a major breakthrough in the technology of solar water heaters.

The technology adopts a multi-layer water tank, a multi-stage circulation structure and a hot and cold water storage method, so that the remaining hot water in the water tank is not mixed with the newly added cold water, thereby ensuring the uninterrupted supply of hot water required by the user. Because this technology can make the use of solar energy and construction close together, it not only solves the problem of water supply all the year round, but also changes the image of the roof solar water heater in the past. It has attracted the attention of relevant state departments. It has obtained national invention patents last year and has been included in the national patent industrialization demonstration project by the State Intellectual Property Office. A cooperation agreement has been signed with the Energy Research Institute of the National Development Planning Commission. mouth

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