Accelerate the growth of natural gas power generation Towards zero carbon

Power sector transformation under carbon neutrality goal

More and more countries are aware that rising levels of greenhouse gases will have a range of impacts on climate change and are taking advantage of them

Take actions and countermeasures to realize the vision of a zero-carbon future. Due to 41% of global greenhouse gas emissions

From the power industry, therefore, the low-carbon change of the power system is imperative, and the key is to use green innovation technology

The technique replaces the traditional technique.

At present, there are more than 120 countries and regions in the world

Most of them are planned to be carbon neutral by 2050

Now, such as the European Union, the United Kingdom, Canada, Japan and other countries

Area. In summary, developed countries are developing low carbon globally

Under the background of the reform of the power industry, the emphasis is on recognition

The contribution of natural gas power generation to environmental protection and carbon reduction in the past

Pay more attention to the complementarity of natural gas power generation and renewable energy,

The continuous development of natural gas power generation makes it become a traditional coal power replacement

Generation of base load energy and ensure the safety and stability of the power system can be

Rely on the flexibility of energy, and actively layout hydrogen power generation industry

To ultimately achieve clean, zero-carbon power generation

It can be seen that the key reason for the EU power industry to achieve CO2 emission reduction is to continue to promote the layout of the natural gas power generation industry, use natural gas power generation to replace traditional coal-fired power generation, achieve cogeneration and energy efficient use, and combine renewable energy to achieve multi-energy complementary. At the same time, considering that natural gas power generation can achieve some or all hydrogen power generation in the future, and future cost and technological breakthroughs may make hydrogen cost competitive, some countries in the EU are adopting policy incentives to promote the development of hydrogen industry infrastructure and reduce costs. Similar to what the wind and solar PV industries have experienced through targeted policy incentives, these technologies have the potential to significantly increase the availability and affordability of hydrogen. Japan is currently the world's largest importer of LNG, and natural gas power generation has become the main force of its electricity supply, accounting for 37% of electricity generation, more than all other types of power generation. In order to achieve the goal of carbon neutrality by 2050, Japan is also actively taking action to decarbonize its energy structure. The new goal of the Sixth Energy Basic Plan announced in 2021 is to vigorously deploy renewable energy and significantly increase the proportion of its electricity generation in Japan's total electricity generation to 36%~38% by 2030; And the new and in operation of natural gas generating units gradually require the capacity of hydrogen combustion, and actively develop hydrogen power generation, by 2030, hydrogen power generation will reach 930 to 940 billion degrees. Natural gas power generation, as a flexible and stable form of low-carbon power generation, will still be regarded by the Japanese government as the highest proportion of fossil energy generation.

China: Not only is it the first of the world's major emitters to set carbon

The target period of neutralization of developing countries is also the world's electricity

Big producers and consumers, with the goal of achieving carbon emissions by 2030

Peak, 2060 to achieve the target set in carbon, in

China has proposed the cumulative installed capacity of wind power and photovoltaic power generation by 2030

Reaching 1.2 billion kilowatts, the power system is being built by speeding up

New power systems for rapid and deep transformation. though

At present, coal still dominates the power generation structure in China

Bit, but coal power generation installed capacity and power generation has been from high

The fast growth has entered the low-speed growth stage, and the power grid needs to be stable and low

Carbon base load power supply; At the same time, due to renewable energy generation

It is characterized by intermittency, volatility and instability

The power grid system is required to configure a higher proportion of flexible electricity

Source as support. The grid needs to respond faster on a larger scale

Fast, affordable, sustainable power supply

To provide peak regulation, frequency modulation services.

In 2020, the installed capacity of full-caliber power generation in China will reach

220.58 million kilowatts, an increase of 9.5%, the whole country

The installed thermal power capacity reached 1,245.17 million kilowatts, an increase year-on-year

It is 4.7% long, accounting for 56.58% of the total installed capacity. Among them,

The installed capacity of coal power was 1079.92 million kW, up year-on-year

3.8%, accounting for 49.07% of the total installed capacity, the first decline

To less than 50%; The installed capacity of gas and electricity is 98.02 million kilowatts.

An increase of 8.6% year-on-year, accounting for 4.45% of the total installed capacity

Natural gas power generation is an important support for new power systems

Under the goal of "dual carbon", as an important support for the future new power system, the position of natural gas power generation will become more and more important.

As a power source with excellent peak and frequency regulation performance, natural gas power generation is the best supplement to renewable energy power generation, and it is the Ministry of Power

A feasible technological route for low-carbon transformation.

High reliable capacity factor: Natural gas power generation is flexible and adjustable

Degree, can quickly and reliably online, adjust the output level, root

Balance supply and demand as needed. They can depend on the power supply

In the course of a day, a week or a month, and in the seasons

Knots (whenever needed) change to provide more or

Less power. When deploying more undispatchable wind power

And when it comes to solar power, this flexibility is great for keeping the grid stable

Qualitative is particularly important. No matter what time of day or weather

Conditions, as long as it takes, gas plants can operate and

Provide reliable power on demand. And wind and sun

The availability of energy is not always consistent with the demand. Such as wind

The farm installed capacity is 100MW, but the grid is due to wind when needed

The weak force can only produce 20MW, so the reliable capacity coefficient is only

It's 20%. GE produced Table 1 based on global averages

The "reliable capacity factor" is shown.

Low-carbon and clean: The main component of natural gas is methane, which also contains

A hydrocarbon with the least carbon and the most hydrogen. For the same amount of power,

Gas power generation produces more than 60% less CO2 than coal power.

HA class gas turbine combined cycle using natural gas as fuel

For example, although the same fossil energy, but

The CO2 emission value per kilowatt hour is only 320g. In addition, day

Natural gas power generation is also more efficient than coal power in energy utilization

More than 30%. The most advanced 9HA.02 combined cycle power generation

Efficiency 64%, equivalent to 192 grams of coal consumption per KWH of electricity. Gas turbine consortium

The carbon intensity of the combined cycle is more than 60% less than that of the equivalent coal power.

In addition, NOx is generated by gas turbine power plants and coal-fired power plants

The reason is different. NOx generated in the combustion process has

Three types, namely thermal, fuel and fast.

9HA gas turbine combustion temperature above 1500℃, NOx

The formation is basically a thermal type. And in a coal-fired boiler

In addition, from the point of view of kilowatt-hour cost, the more efficient the equipment,

The less fuel consumed to produce the same amount of electricity, the cost of the kilowatt-hour

The lower it is. At the price of natural gas 2.4 yuan/cubic meter, standard coal

Price 800 yuan/ton for example, considering the investment and operation and maintenance costs,

The corresponding KWH cost (including fuel and operation and maintenance and investment)

Costs) are shown in Table 4.

Of course, under the "double carbon" goal, the cost of electricity should be tested in addition

In addition to fuel costs, investment in operating and maintenance costs, but also

Take into account the cost of pollution and the cost of carbon emissions.

Also, if you need something else in addition to your own power generation

Power supply or network coordination, peak adjustment cost (coordination contribution cost)

It should also be calculated in the cost of kilowatt-hour electricity, otherwise, it should be deducted.

In the power auxiliary service market, peak load auxiliary service costs

Generally, thermal power plants that have not carried out deep peaking transformation and

Wind power, photovoltaic such as unstable renewable energy generation

Factory share the responsibility. Among the different power generation technologies, HA class

The gas turbine has more downward (low load rate) and upward

(peak load) space, and faster load adjustment rate,

There is a chance to enjoy more subsidies for peak balancing. With new energy

The increase of specific gravity and the limit control of coal power capacity compensate new energy

The peak adjustment cost of the source will be more expensive.

The combined social cost of carbon emissions in the United States is about $51 per ton,

The price of carbon emission allowances in the EU carbon market is currently

Up to 56 euros/ton VIII, assuming 300 yuan/ton

As an estimate of the future domestic carbon trading price, according to the present

The carbon emission intensity of coal power and gas power is different

The carbon emission cost estimates are shown in Table 5.

There is no doubt that the emission of pollutants has been greatly reduced, and the energy efficiency has been greatly improved

Rising, very low carbon emissions costs will make natural gas

Combined cycle power plants have significant advantages and are in the new power system

It occupies an extremely important position in the construction of unification