Heat supply network security and energy saving und

2022-07-31
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Thermal safety and energy saving under big data 1. Industry background analysis

heating is one of the important infrastructures in northern cities. The traditional decentralized heating method causes energy waste and environmental pollution, which can no longer meet the development needs of modern society, but central heating can solve these problems. By 2014, more than 400 cities in China had built central heating facilities, and many counties also had heating facilities, forming a large scale

with the increasing number of heat users, how to better and more effectively manage the whole heat and heat user measurement has become an urgent concern, and the construction of heating information has undoubtedly become a hot spot in the industry. At present, the hot practices of IT systems in the industry include: (1) heat metering technology: on-off time area method, household heat meter method, temperature area method, flow temperature method, radiator heat distribution meter method; (2) Thermal monitoring technology: centralized control system for heat source, 150000 tons/a high-end precision cast aluminum alloy material project of no value Jinyu is progressing smoothly, and the heat exchange monitoring system and public building time-sharing and zoning control system are maintained; (3) Information system: GIS buried information system, heat metering system, heat supply charging system, heat supply dispatching center, large screen vanadium monitoring system, etc

II. Pain points of the heating industry

with the smooth implementation of the heating metering transformation project of existing buildings in the northern heating area, the heating information construction has also developed synchronously. The heating departments of all provinces and cities have abandoned the principle of "one dominant company", and the expansion of market demand has attracted many information-based manufacturers to compete for the heating transformation market. The current situation of information system of thermal power company is as follows:

? Many systems form data islands and information islands, which cannot generate the overall energy-saving value

? In a residential area, 9 manufacturers' heat metering devices are installed and 9 sets of heat metering systems are running, which are incompatible with each other

? The boiler centralized monitoring device, heat exchange station monitoring device and household metering device of a thermal power company are provided by different manufacturers; There is a set of centralized boiler monitoring system, multiple sets of heat exchange station monitoring systems and multiple sets of household metering systems running. The data cannot be seamlessly connected, and heating on demand cannot be realized. The huge investment does not generate energy-saving value

III. solutions - unified operation of big data

1. Adopt platform architecture

the heating platform uses advanced technologies such as distributed storage architecture, load balancing service, high concurrency collection service, wireless data transmission, and auxiliary control decision-making to break the data island and integrate the data of heating metering system and thermal monitoring system, The operation mode of "big data + cloud platform" has brought double major changes in technology and management in the development process of heating and energy conservation

advantages

1 SOA Based Enterprise Application Architecture: it can integrate any manufacturer's DTU, acquisition device, metering/sensing device, hardware device as a service, infrastructure as a service, and application software as a service

2. Distributed storage architecture: it can store 1million users and data of 10 heating seasons, and allow dynamic capacity expansion

3. High concurrency distributed DTU access service: it can communicate with 10000 sets of acquisition devices at the same time and allow dynamic capacity expansion

4. Distributed computing: complete the collection, processing and warehousing of 100000 meters within one minute

5. Unified operation mode: it integrates the data of heating metering system and thermal monitoring system to provide auxiliary basis for on-demand heating and planned production, and finally realize thermal safety and energy conservation

2. The key technology to realize the unification of

upper level services requires the integration of instruments from various manufacturers. There are three integration methods, as shown in the following table. In the engineering application where the acquisition device has been installed, scheme II is recommended; In the new thermal modification project without acquisition device, scheme III is recommended

3. Multi party win-win heating platform

the platform is built to achieve a multi-party win-win ecosystem. The users of the platform include heating offices, heating companies, instrument manufacturers and heat users. The services provided to each user are as follows:

IV. thermal safety and energy conservation under big data

1. Why is there big data in the heating industry

with the expansion of the heating metering transformation of existing buildings, the construction of heating information is no longer limited to heat sources, heat and heat exchange stations. The monitoring is extended to the end of users. The data collected by each household include room temperature, set temperature, valve status, accumulated heat, flow, water supply temperature, return water temperature, outdoor temperature, etc. there are about 10 calculated values for each heat user. For a heating company with a heating area of 5million square meters, there are about 100000 heat users, 1million storage in one hour

2. How to use big data

to measure the storage and mining of big data at the moment. Its ultimate goal is to classify thermal safety and energy saving of Jinan gold testing machine. So, how to use thermal big data to achieve the maximum energy-saving value is the biggest problem in the heating industry at present. As the practitioner of the operation mode of the heating platform, Guangdong AGCO Technology Co., Ltd. has summarized a set of mature thermal safety and energy saving implementation strategies in the heating platform engineering practice of Wuzhong in Ningxia, Huairou in Beijing, Bole in Xinjiang and other thermal power companies

3. Value generated by big data

big data is applied to the heating industry, and the ultimate goal is only thermal safety and energy conservation

value for thermal safety: A. unattended, the lowest labor cost can also ensure thermal safety; b. Remote real-time monitoring enables the president of the thermal power company and the supervisor of the heating Office to know the thermal operation status anytime and anywhere

value for thermal energy conservation:

a. hydraulic balance, heat loss analysis, and big data help thermal companies operate and maintain heat. From the large-scale summary of monitoring data of heat source, heat, heat station and heat user, it is not difficult to analyze the thermal hydraulic balance state and heat loss state, so as to help the heat company complete the heat and mass regulation again

b. auxiliary decision-making of on-demand heating to help realize thermal energy saving. From the historical data of the whole heating season, the supply and demand adjustment coefficients and time-sharing and zoning adjustment coefficients under different outdoor climates can be mined, the total heating seasonal energy can be formulated, and the hourly production auxiliary strategy can be provided for the heat dispatching according to the outdoor climate and terminal room temperature parameters

v. conclusion

the technology of "big data + cloud platform" serves the safety and energy saving of heat, which will surely bring double major changes in technology and management in the development process of heat supply and energy saving

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