From Yangtze River Wharf to Industrial Park, Customers Use Energy More Intelligently

In recent years, State Grid Hubei Electric Power Co., Ltd. has expanded its comprehensive energy business in many aspects, built a provincial comprehensive energy service exhibition hall, promoted the construction of shore power in the Hubei section of the Yangtze River, and increased supply and expanded sales through comprehensive energy efficiency services, multi-energy services of heat and cold electricity, distributed energy services, electric vehicle charging services, and market-oriented electricity sales.

"At the end of last month, we reached an agreement with the Wuhan Institute of Biological Products on the comprehensive energy project. The contract amount is expected to reach 62 million yuan. We will add high-efficiency magnetic levitation variable frequency chillers, gas steam boilers, ice storage and other equipment to replace the original old equipment. This will not only open up the electricity market, but also save the institute nearly 10 million yuan in energy costs each year, and significantly reduce the emission of pollutants such as waste gas and wastewater in the production process." On July 5, Wang Jun, director of the marketing department of State Grid Hubei Integrated Energy Services Co., Ltd., said.

"Green Energy Ship" shuttles through the Three Gorges Dam area

On July 5, at the shore power experimental area in the Three Gorges Dam area in Yichang, more than a dozen cargo ships docked at the water comprehensive service area composed of three pontoons. This is the first comprehensive service area on the Yangtze River that integrates safety inspection, shore power service and warm service.

One of the three pontoons is a "green energy ship", which mainly provides energy for the integrated water service area and docked ships. A long water cable continuously supplies electricity to the ship, but this is not the only power source for the service area. On the top of the three pontoons, photovoltaic panels are neatly arranged, and the sunlight shines on the photovoltaic panels, making them sparkle.

The ship is equipped with 8 shore power facilities, 16 ship power banks and an environmental testing room. Each shore power facility can supply power to two ships, and the ship power banks can be directly towed to the ship for charging. The photovoltaic equipment on the three pontoons provides power for the ship power banks.

"The photovoltaic system can basically meet the daily charging needs of the ship's power bank. The ship's power bank is charged when it is idle, and electricity is used when the ship arrives, so the utilization rate is relatively high. On cloudy days or at night, the ship's power bank can also be charged through shore power, which is very convenient." Li Xingheng, an employee of Yichang Yangtze Three Gorges Shore Power Operation Service Co., Ltd. introduced.

"The integrated water service area provides us with a great place to rest. Whether it is powered by shore power facilities or the ship's power bank, it is very convenient. We just need to scan the code to pay. There are dedicated staff to provide services, and we can just be like 'hands-off bosses.'" Jiang Jianming, a crew member of Dihao 21, has more than 20 years of sailing experience, and he is deeply moved by the changes today.

During the construction of the Three Gorges Dam Shore Power Experimental Area, attempts and explorations to use photovoltaic power generation and power supply have never stopped. The photovoltaic installed capacity of the Three Gorges Dam Shore Power Experimental Area is 178 kilowatts, which can generate 150,000 kilowatt-hours of electricity throughout the year and reduce the emission of various harmful gases by 18,000 tons.

State Grid Hubei Electric Power has taken the Three Gorges Dam area shore power experimental area as a model, and built shore power facilities in 10 cities along the Yangtze River with high standards. It has applied the shore power cloud network platform developed based on the Internet of Vehicles to achieve unified, convenient and efficient settlement of costs, as well as IoT functions such as equipment status perception and safety warning. When conditions are ripe, it can act as an agent for shore power to participate in market-oriented power sales, and further build a win-win energy Internet ecosystem with ship customers and port operating companies.

Comprehensive energy efficiency solutions help customers reduce costs and increase efficiency

On June 27, three technicians from Xiaogan Power Supply Company went deep into Dongshantou Industrial Park in Xiaonan District to patrol and control the electrical equipment of many companies that had signed service contracts, including Hubei Bailas Doors and Windows, Jiacheng Huiran Building Materials, etc., and provided comprehensive energy services for the companies' reliable electricity consumption during the summer peak period.

Xiaogan Power Supply Company installed a comprehensive energy and electricity consumption data service terminal for a company in Dongshantou Industrial Park for free. Two months later, the staff concluded based on the information collected by the terminal that the capacity of the distribution transformer far exceeded the actual demand and recommended reducing the capacity from 630 kVA to 500 kVA, which could reduce expenditure by 43,700 yuan per year. Wang Guilin, the head of the company, said: "We try every possible way to reduce costs for enterprises. This service is impeccable!"

From January to May, the amount of electricity charges collected by Dongshantou Power Supply Station of Xiaogan Power Supply Company increased by 18% compared with the same period last year. While reducing electricity charges for enterprises reasonably, where did the increase come from?

Wang Guilin used his personal experience to convince many companies to "pay for services": "Companies hire a professional electrician and pay at least 80,000 to 100,000 yuan a year. Now, if we outsource the daily inspection work to the power supply station, it only costs 20,000 yuan a year."

It comes from the full trust of enterprises in high-quality services. Xiaogan Jinda Steel Co., Ltd. changed the production peak to 0:00 to 8:00, and the unit electricity price dropped by 80%, but the total electricity bill continued to rise due to the expansion of production. "In the past, I was worried about the quality of electricity at night, fearing that failures could not be handled. Now the power supply staff are on call, and all production lines are operating at full capacity." said Lin Hanyong, the person in charge of the company.

As of the end of May, Xiaogan Power Supply Company has installed comprehensive energy and electricity data service terminals for 80 enterprises in the park free of charge, developed 30 sets of customized energy-saving plans, and saved nearly 2 million yuan in basic electricity bills for 30 large industrial electricity users.

In November 2018, after analyzing the electricity consumption of Hanchuan People's Hospital, the Comprehensive Energy Service Commando of Xiaogan Power Supply Company learned that the hospital's electricity consumption model was extensive and lacked monitoring and optimization, resulting in low electricity efficiency and high electricity bills. At the suggestion of the power supply company, the hospital established an energy monitoring and control room covering the main power supply of the entire hospital, installed an energy efficiency management system to monitor the hospital's energy use; through air conditioning energy efficiency monitoring, the electric regulating valve automatically and differentially controls the cooling supply of each area load, and realizes balanced distribution control of cooling and heating in the four air conditioning load areas.

During the heating season from November 2018 to April 2019, Hanchuan People's Hospital saved a total of 278,000 cubic meters of natural gas, which, at a unit price of 3.4 yuan per cubic meter, saved about 800,000 yuan in natural gas costs, significantly reducing the hospital's energy costs. Last year, the hospital's air conditioning electricity consumption was 2.51 million kWh. Through air conditioning energy efficiency monitoring and optimization, it is expected to save 700,000 kWh of electricity this summer, saving nearly 400,000 yuan a year.

State Grid Hubei Electric Power Construction’s provincial comprehensive energy service exhibition hall highlights the characteristics of platform regulation, business display, and technology integration. It showcases the concepts, cases, social and economic benefits of comprehensive energy services to government agencies, corporate customers, and the general public, and cooperates in the fields of cold and heat supply, distributed energy, and smart energy integrated platforms to actively expand the market.