Shang Xiuzhen: Introduction to the progress of the energy internet pilot demonstration project in Inner Mongolia Mengxi High-tech Industrial Park

China Energy Storage Network News: "The overall idea of ​​the construction of the energy internet demonstration project in Mengxi High-tech Zone is to utilize the storage and power generation characteristics of tail gas, collect, store, allocate, control, trade and serve tail gas, and combine cogeneration, wind/solar and other renewable energy sources and demand-side response to achieve the coordinated optimization of multiple energy sources. The focus is on promoting the construction of six projects: kiln tail gas utilization, renewable energy, incremental distribution network, demand-side response, energy trading, and energy internet platform."

Photo: Shang Xiuzhen, deputy director of the Management Committee of Mengxi High-tech Industrial Park, gave a special report

1 Basic situation of the park

The planned area of ​​Mengxi High-tech Industrial Park is 140 square kilometers, the built-up area is 70 square kilometers, the total area is about 63.50 square kilometers, and there are nearly 20,000 industrial workers. Since its establishment, a total of 47 key enterprises have been introduced and cultivated, including 20 large-scale enterprises and 5 listed companies. The total assets of the park have reached 70 billion yuan, and the five pillar industries of new chemical industry, special metallurgy, energy, high-tech materials, and modern logistics have been initially formed, as well as the four major circular economy industrial chains of "coal-fired power aluminum building materials", "coal coking metallurgy", "new chemical industry", and "three wastes" comprehensive utilization. All enterprises in the park belong to upstream and downstream related industries or industrial alliances. Mengxi High-tech Industrial Park is a high-energy park. By the end of 2016, the annual electricity consumption was 10.4 billion kWh, the load was 1,346MW, and the total power generation will exceed 2 million kW in recent years.

2 Why does Mengxi Park implement the energy Internet project?

First, because the park is a national circular economy and ecological industrial park, it has about 600 million cubic meters of exhaust emissions each year, which is incompatible with the circular economy, ecological concepts and environmental protection policies. The cost of decentralized governance for enterprises is high, and it is urgently needed to be solved through the construction of demonstration projects.

Second, the park uses small coal-fired boilers for heating, which have high energy consumption and serious pollution, and urgently needs to be transformed into a centralized heating system.

Third, the industrial park has a large demand for electricity, and a large number of distribution assets are idle, while there is a large amount of wind and solar power abandonment in the surrounding areas. For example, the solar power abandonment rate was about 20% in 2016.

Therefore, it is urgent to effectively improve the energy structure through the complementarity and mutual assistance of multiple energy sources.

3 Analysis of the key points of the “Internet +” smart energy (energy internet) demonstration project notice

The Inner Mongolia Mengxi High-tech Industrial Park Energy Internet Pilot Demonstration Project (hereinafter referred to as the Mengxi High-tech Zone Energy Internet Demonstration Project) is one of the first batch of "Internet +" smart energy (energy Internet) demonstration projects of the National Energy Administration. In the notice announcing the demonstration project, the National Energy Administration mainly emphasized the following points:

(1) The first batch of “Internet +” smart energy (energy internet) demonstration projects totaled 55. Mengxi is a comprehensive demonstration project of the park’s energy internet.

(2) In principle, the first batch of demonstration projects should be started before the end of August 2017 and completed before the end of 2018.

(3) Provincial energy authorities should organize, coordinate, supervise and manage demonstration projects in their regions, optimize and simplify project approval procedures, and provide one-stop services.

(4) Demonstration projects should be comprehensively evaluated and provided with continuous guidance. If major changes occur or if the later operation does not meet the technical and economic requirements of the demonstration project, the project unit should be ordered to make rectifications within a time limit. If the project still does not meet the requirements after rectification, it will no longer be promoted as a demonstration project and will no longer enjoy relevant policies.

(5) Relevant distributed energy, power grid, gas grid, and heat network enterprises should be organized to make plans for the construction of supporting projects for the demonstration projects, and to study and formulate grid-connected operation plans for the demonstration projects.

(6) Provincial energy authorities may formulate and coordinate policy measures in land, price, market, capital, tax, technology, and talent to support the construction and operation of demonstration projects in light of local conditions, and coordinate major issues in policy implementation. Demonstration projects will be simultaneously incorporated into special reform pilot projects such as electricity, oil and gas, and priority will be given to the implementation of the relevant national energy flexible price policies, incentive policies, and reform measures. Demonstration projects will give priority to using the indicators and quotas of thermal power installed capacity, renewable energy quotas, carbon trading quotas, and renewable energy subsidies in each province (region, or municipality) as determined by the national energy plan.

4. Demonstration project application related work

I. Overall Objectives

(1) Make full use of the existing 600 million m3 of tail gas in the park to develop gas-fired heat and power cogeneration;

(2) Realize the consumption of clean energy such as wind power, photovoltaic power generation, and tail gas power generation in the park;

(3) Realize regional centralized heating and improve people’s livelihood;

(4) Utilize 400 hectares of abandoned industrial and mining land in the park to build photovoltaic projects and increase the proportion of renewable energy;

(5) Reduce standard coal consumption by 369,000 tons, reduce carbon dioxide emissions by 967,000 tons, save 1.09 million tons of water resources, and improve the environment.

(6) Reduce the electricity cost of enterprises by more than RMB 0.08/kWh.

2. Overall Approach

By utilizing the storage and power generation characteristics of exhaust gas, through the collection, storage, allocation, management, trading and service of exhaust gas, combined with cogeneration, wind/solar and other renewable energy and demand-side response, the coordinated optimization of multiple energy sources can be achieved.

III. Overall Plan

(1) Collect, purify and centrally store the dispersed exhaust gas to convert it into usable energy with peak load-shaving capability, and then burn it to generate electricity through gas-fired cogeneration generators. The generated electricity and heat energy will be allocated to the required users through the "Smart Mengxi Energy Operation Control and Trading Platform";

(2) Utilize abandoned industrial and mining land to build photovoltaic projects, which will complement the existing thermal power plants and blast furnace tail gas power generation;

(3) Absorb the abandoned wind and photovoltaic power in surrounding areas;

(4) Construction of power distribution network and energy supply system;

(5) Construction of the Smart Mengxi Energy Operation Management and Trading Platform to provide comprehensive services such as real-time monitoring, collaborative control, energy trading, and energy efficiency analysis.

IV. Construction Content and Scale

(1) Tail gas collection and storage: Construction of 5 km of gas pipeline, 2 × 100,000 m3 gas tanks, and 4 × 80,000 m3 gas tanks.

(2) Cogeneration: 2×100MW gas-fired cogeneration generator sets.

(3) Photovoltaic power generation: 2×50MW photovoltaic power stations, distributed photovoltaics, and wind-solar complementary projects.

(4) Power distribution network: 1×220kV, 1×110kV, 3×35kV substation and line construction projects.

(5) Steam and heat pipeline network: Construction of supporting facilities for 15km heating and 3km steam pipeline network.

(6) Platform construction: construction of energy data collection, management, and trading platform.

5 Demonstration Project Promotion Work Plan

The overall idea of ​​the demonstration project is to follow the principle of "grouping, step-by-step implementation, starting with the easy and then the difficult, and making breakthroughs in key areas" in accordance with the "Notice on the First Batch of "Internet +" Smart Energy (Energy Internet) Demonstration Projects". Internally, we will take the initiative to carry out work, implement projects, and coordinate with users; externally, we will coordinate well with the government and the power grid, and actively strive for policies.

We are focusing on promoting the construction of six projects: kiln exhaust gas utilization, renewable energy, incremental distribution network, demand-side response, energy trading, and energy Internet platform construction. These six project teams are connected with relevant government departments, power grid companies, and energy management departments. Other related work, such as applying for photovoltaic indicators, distribution asset integration and acquisition, has also been carried out in an orderly manner.

The entire project is promoted by Smart Mengxi Co., Ltd., which improves the organizational structure, grants work authority, simplifies the approval process, and implements work responsibilities. A project promotion meeting is arranged every half month to coordinate the progress of the entire energy Internet demonstration project, make decisions and study the problems in the process of project promotion and the implementation of specific work measures.