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Recently, the National Bureau of Dynamics issued the “Reply on the Relevant Projects of the Power Supply Construction Plan of the Fubei Coal and Electricity Base from the Fubei to Hubei” (National Energy Power [2020] No. 14) (hereinafter referred to as the “Reply”), and approved the formal start of the ±800 kV ultra-high voltage DC project in the Fubei-Hubei ±800 kV ultra-high voltage DC project, and set up five coal and electric projects including Huangling, Yanchangfu County, Guantou Jingshuichuan Phase III, Yuneng Yanghuo Pan, and Datang Xiwangzhai.
(Source: WeChat public number “China Power News”)
The Reply Letter pointed out that the 7.96 million kilowatt coal-electricity project that is equipped with Sugar baby has sufficiently developed peak-adjustment capabilities, providing support for the delivery of new power such as wind and light, and ensuring the ability to absorb new power.
The reporter sorted out and found that many ultra-high pressure demonstration projects with “wind and light fire” bundled and delivered electricity are combined online, and the level of the difference is that large capacity coal-electricity projects are used as peak power supply. In the past two years, in order to improve the application effectiveness of ultra-high pressure, she stood up and walked off the stage. The coal-set power supply points are removed from the construction list, and the coal-to-electricity transmission ratio is not continuously added. Manila escort So, with coal and electricity “matched” with a lot of “storm”, ultra-high pressure can eliminate cleaning power in many places, while also considering economic and safety? How should ultra-high pressure supporting power supply be scientifically planned?
Application rate of coal-electricity progress channel
The original plan of the ±800 kV ultra-high voltage DC project of the Yuanbei-Hubei ±800 kV was started in March 2017 and completed and put into operation in 2019, but it was not promoted as scheduled. In the second half of 2018, the National Internet restarted the project Escort, and from the headline feasibility study program, the project was “satisfied with the NorthPinay The delivery of the power base and the demand for Hubei’s debt” was listed in the “Notice on Accelerating the Promotion of the Construction Tasks of a Number of Transformation Key Projects” that year, and was approved by the National Development and Reform Commission in January 2019, and was approved by the National Development and Reform Commission to complete and invest in 2021.
For the performance of nearly 8 million kilowatt coal-electricity institutes supporting the ultra-high pressure project, power expert Ye Chun said that under the situation of new power generation and networking, the coal-electricity efficiency has changed from the previous single power type to the dual-efficiency of the combined power type.
A intellectual has revealed to reporters that in recent years, nearly half of the ultra-high voltage power supply points have not been approved, and ultra-high voltage has also been contested due to its low application effectiveness.
Public information shows that the Jiuhu Ultra-High Pressure Project, a large-scale ultra-high pressure project, was invested on June 23, 2017. It has designed a power delivery of 8 million kilowatts and an annual power delivery of 40 billion degrees. Due to the lack of synchronization of supporting power supplies, as of the end of April 2018, the cumulative operation of 10 months was only 9.62 billion degrees of electricity to Hunan.
“In the past two years, some changes have occurred in the wind direction and thinking of ultra-high pressure supporting power points. The higher the proportion of coal and electricity, the more stable the output. The application rate of ultra-high pressure lines is in the book. After this, Ye Qiuliang rarely appears, and the light is too low. The fire power carries a large beam, and the wind and light are suitable. The coal and electricity connected to certain lines have a capacity of nearly all the capacity of the line.” The above-mentioned person introduced.
The supporting coal-electricity-free ratio of no fixed ratio of Sugar baby
According to the “Environmental Movie Construction Planned Power Supply Construction Planning Environmental Movie of the Sugar Manila” issued by the National Development and Reform Commission in May 2019, the new power supply is 6GW in accordance with the distribution of new power machines in the verification plan. In this regard, the School of Economics and Governance of Huabei Electric Power College is authorized by EscortYuan Jiahai pointed out: “According to the usual 7:3 ratio, the capacity of nearly 8 million kilowatts of coal-electricity in the planning is not a small number, and it can be met. There is no future problem with the transmission channel.”
For the setting of new power installations, the Recovery Letter clearly states that the overall experience of other ultra-high pressure channels will be summarized and the proportion of new power in the output power will be gradually improved. The construction and design plans for new power generation projects such as risk and photovoltaics that need to be added will be discussed separately Manila escort is set.
So under the conditions of ensuring safety and economic security, how many new forces can be bundled up to a maximum of more than one-way power delivery terminals?
The reporter noticed that the National Bureau of Power 2Sugar daddy The National Renewable Power Development Supervision Report for 2018 in June 019Pinay escort shows that as of 2018, the proportion of renewable power of 20 ultra-high pressure lines ranged from 0% to 100%. Among them, the proportion of renewable power of five DC lines, Fufeng, Yusui, Fengjin, Chusui and Pujo, accounted for more than 95%, and they are all hydroelectric specialized lines. The proportion of renewable power in the residual line is 48.7%.
“From a certain level, the technical economic characteristics of different power sources are important to consider the power demand, peaking capacity, and the output of clean power and coal-electricity. Under technical guarantees, the new power generation and disinfection can be guaranteed without an absolute fixed ratio. “Ye Chun said, “In the future, the power transmission will be mainly powered by new power generation and coal power as support under technical feasibility. The capacity and output of new power generators are unlimited, and coal power is still an important part of the power output for a considerable period of time. ”
Yuan Jiahai told reporters that due to the intermittent wind power output and the application hours of its application hours are significantly lower than coal electricity and large hydroelectricity, the useful capacity of wind light cannot exceed 30% of the over-line capacity. “The major reserved for coal electricity that can produce stable output can ensure that the application hours of ultra-high pressure DC projects can be guaranteed. href=”https://philippines-sugar.net/”>Escort to the economically just 4000-4500Sugar daddy hours. If we further improve the proportion of renewable power, we need to provide a large number of energy capacity, and we must increase the overall cost of renewable power development in one step. ”
Striving to build a clean power base
The “Fengguang” power base bundleSugar babyThe power delivery format of ultra-high pressure is a big deal. How should the supporting power points be planned?Yuan Jiahai pointed out that the construction of new power bases in the Three Norths, especially the new power bases for the price of Sugar daddy should be transformed toward a comprehensive power base. “The wind and photovoltaics are bundled all the way, which is smoother and more controllable than the pure delivery of wind or photovoltaic power. It is equipped with coal and electricity, and is equipped with ultra-high pressure lines to improve economic efficiency at a certain level and to the goal of sending more renewable power. The heroine step by step on the top of the civilians in the play, creating the Sugar baby. Baby‘s entertainment circle is developing, otherwise the pure form of the “Sugar daddy” will still be Sugar daddy will encounter high problems of sending out walls and wind abandonment.” In terms of supporting coal and electricity, Yuan Jiahai believes that it is necessary to consolidate the whole country’s electricity. href=”https://philippines-sugar.net/”>Manila escort Force equalization and power flow optimization, to examine the performance and positioning of approved coal-electric bases from the head. “Now, coal-electricity base fields are mainly concentrated in Shanxi, Xi and Inner Mongolia. Whether coal-electricity bases in these areas can be continuously built and increased capacity is a problem worthy of systematic research. We must consider reasons such as ecological protection in the Huanghe River and air management in the Fenwei Plain.”
On the side, Yuan Jiahai remind TC:
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