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Opened the environmental transcripts of the first five months of this year, the State Grid Henan Power Company performed brilliantly: From January to May, Henan reduced the power generation of coal-fired units in the province by absorbing the power outside the province and consuming clean energy to generate electricity. At the same time, it will save 1.39 million tons of coal-burning consumption, correspondingly reduce 8800 tons of sulfur dioxide emissions and reduce nitrogen oxide emissions by 7,600 tons. The province's unified coal-fired units will continue to increase the ultra-low emission compliance rate, and operate unit smoke, sulfur dioxide and nitrogen oxides. The average emission concentration is far below the national ultra-low emission standards...
"In order to serve Henan Province to win the battle against atmospheric pollution, the State Grid Henan Electric Power implements the concept of energy conservation and environmental protection to the whole process of power grid dispatching. Practice has proved that we are embarking on a green dispatch road that is in line with the actual situation in Henan Province." State Grid Henan Power Deputy General Manager An Jun said.
Real-time monitoring of power plant sewage
In the power generation structure of Henan Province, coal-fired generating units account for more than 80% of power generation. To achieve energy conservation and environmental protection dispatching, and to do the best for coal-fired engine emission reduction optimization scheduling.
In 2016, the State Grid Henan Power Science Co., Ltd. compiled 138 sets of 55.34 million kilowatts of coal-fired units to renovate the plan, and completed the ultra-low emission transformation in the same year, two years ahead of the national time. “Ultra-low-emissions reform is only the beginning, ensuring that all power plants operate in strict accordance with ultra-low emission standards is the key.†said Jun Junjie, deputy chief engineer of Henan Electric Power Control Center.
Since 2016, the State Grid Henan Electric Power has actively purchased professional monitoring equipment on the one hand, and completed all kinds of environmental protection data collection and monitoring of coal-fired generating units. On the other hand, the company has built a “super low emission environmental monitoring system for coal-fired generating units in Henan†with Henan Electric Power Research Institute as a technical support unit.
"The system not only realizes the real-time monitoring of the atmospheric pollutants of each unit, but also has the functions of sorting the environmental protection index of the unit, calculating the emission intensity of the unit air pollutants of different capacity units, and monitoring the total discharge of the sub-regions." Henan Electric Guo Weimin, the person in charge of the Power Technology Center of the Academy of Sciences, said.
State Grid Henan Power also set up the power plant emission exceeding the standard alarm and output control threshold in the system, and timely issued alarms and adjusted power generation output according to the real-time monitoring results. Du Xiaoyong, dispatcher of Henan Electric Power Dispatching Control Center, said that the implementation of ultra-low emission standards for coal-fired units in the province is getting more and more in place. Now, their alarm calls are getting less and less.
Optimize and adjust power generation output
Real-time monitoring offers more possibilities for grid-optimized scheduling. State Grid Henan Electric Power Co., Ltd. strives to build a “full-time, full-process†coal-fired unit emission reduction optimization scheduling system by deepening and regulating the ultra-low emission environmental monitoring system of coal-fired generating units.
The concept of energy saving and environmental protection scheduling is first reflected in the annual power generation plan. This year, the State Grid Henan Electric Power Co., Ltd., in conjunction with the Henan Provincial Energy Bureau to formulate the annual power generation plan for the province's unified power plant, fully considers the energy conservation and environmental protection factors, and improves the utilization hours of low-energy, low-emission, large-capacity coal-fired units.
“The annual utilization hours of power plants with a single unit capacity of 1 million kilowatts are planned to be the most, with 2,200 hours, 600,000 kilowatts, 300,000 kilowatts, etc., and the number of units is reduced. At the same time, small capacity and high-emission units are encouraged to generate electricity through power generation transactions. Plan to transfer to large-capacity, low-emission units." Junjie said.
The annual power generation plan is only a base. More lean and dynamic management is reflected in the “monthly power generation plan, day-to-day power generation plan, and real-time dispatchâ€.
The impact of real-time monitoring is not only reflected in the day, but also in the next day's power generation plan and monthly plan. “The coal-fired units with an ultra-low emission compliance rate of less than 80% on the previous day will be controlled by the lowest steady-state output throughout the day; for the continuous 3-day ultra-low emission, the operating rate will be lower than 80%. On the 4th day, the shutdown was scheduled for rectification," Du Xiaoyong said.
“The concept of environmental protection is deeply rooted in the hearts of the people, and each power plant is very recognized for our emission reduction optimization dispatch.†Yan Junjie said. According to statistics, the trend of ultra-low emission compliance rate of coal-fired units in Henan has been improving this year. The ultra-low emission compliance rate of the commissioned units in May reached 81%.
Fully absorb new energy generation
On June 10th, on the hillside of Tumen Village, Miaokou Town, Qi County, Hebi City, Henan Province, rows of solar photovoltaic panels are like undulating blue oceans under the sunlight. “As of the end of May, our photovoltaic power station has been running stably for one year,†said Li Zhiguo, the station manager of the photovoltaic power station.
Since the development of Henan New Energy in 2007, the total installed capacity has shown a rapid growth trend. State Grid Henan Electric Power strictly implements the preferential access policy for renewable energy and actively serves new energy stations on the grid. 2016 is a year of development of Henan photovoltaic and wind power generation wells. In May of that year, in order to standardize the province's new energy grid-connected dispatching service, the company issued the “Guidelines for the Operation of Grid-Connected Operation of Henan Power Grid New Energy Power Plant†to provide standardized, high-quality and efficient grid-connected dispatching services to photovoltaic and wind power generation enterprises.
“Simply, the Service Guide is a reference book for the issuance of new energy power generation companies. What materials are needed and what processes are taken at a glance, no need to take the road.†Liu Wei, Director of Hydropower and New Energy Division, Henan Electric Power Control Center Say.
In addition to grid-connected services, the company also strengthened the analysis of the operational carrying capacity of new energy power plants, strengthened the dispatching operation management, studied the consumption problems of new energy power sources after grid connection and the impact on the safety and stability of local power grids, and ensured the clean energy power. Amount.
"At present, Henan does not abandon the wind, abandon the light, and actively absorb new energy from the province through the UHV Tianzhong DC project." Liu Wei said.
In 2016, Henan absorbed 7.6 billion kWh of coal-fired generating units in the province by absorbing foreign power and eliminating clean energy. This is equivalent to saving 3.4 million tons of coal-burning consumption, equivalent to 4 years of coal-fired power consumption in Henan Province. %. At present, Henan's new energy installed capacity has accounted for more than conventional hydropower, gas, and pumping power stations. In May of this year, the province's new energy power generation reached 652 million kWh, accounting for 2.79% of the province's electricity consumption in the month, three times that of a year ago.