Welcome to High season, but power is limited for 4 months! Could the reason be poor grid integration and stability?

A few weeks ago, China began to loosen its epidemic prevention measures and implement the 5+3 control policy. The number of entry-exit personnel began to increase. Later, in order to fully recover the tourism market, China, as the world's largest tourism market, issued guidance on the prevention and control of epidemic diseases in the tourism industry at the end of November.?

On the first day of the issuance of the relevant notice, the search volume of cross-border travel on well-known OTA platforms exceeded the highest value since the National Day Golden Week, while the search volume of group travel soared 152% month on month, and the order volume of the next day increased 255% month on month.

After the heavy snow solar term this week, the Northern Hemisphere will enter the snowy season, and the winter tourism peak season is coming. However, for East Asia, some countries may lose this dividend period because of insufficient energy.

For example, Japan, a neighboring country of China and a world-famous winter tourist destination.

Power rationing in winter after 7 years

According to the "Yomiuri Shimbun" report on December 2, the Japanese government has proposed a winter power saving requirement for families and enterprises across the country. The power saving period is from December 1 to the end of March next year. It has been seven years since the last winter power saving requirement was proposed.

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Affected by the situation in Ukraine, Japan is threatened by the interruption of liquefied natural gas supply in Russia, and the local thermal power plants are generally aging. In case of equipment failure, the supply capacity will decline significantly. Nuclear power is also difficult to restart completely due to various factors.

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If the electricity reserve rate is lower than 3%, the Ministry of Economy, Trade and Industry of Japan will require further power saving.

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In recent years, there has been a shortage of electricity in Japan. At the beginning of January this year, affected by the cold wave, the power utilization rate in the service area of Tokyo Electric Power Corporation once reached 97%. Therefore, in December, people are generally concerned about climate change.

The Japan Meteorological Agency predicts that the average temperature from December this year to February next year will not be higher than that of previous years nationwide. Although the northern part of Japan is flat with previous years, the eastern and western parts are expected to be lower than normal. This may lead to the transmission of power from north to south to the central region. The power reserve will be extremely tight, the probability of large-scale blackouts will be greatly increased, and the consequences will be very serious when losses occur.

Nuclear power restart is prohibited, and thermal power supply is uncertain

At the beginning of this year, a ski resort in Nagano County had 300 tourists stranded on the cable car due to power failure, causing serious corporate reputation and economic losses. From here, we can see the impact of electricity on hot industries in winter.

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Taking Hokkaido as an example, its tertiary industry GDP accounted for 76.7%. Tourism and related industries are the largest sources of GDP in Hokkaido. After December, the northern region represented by Hokkaido is just in the peak season for tourism, and the power consumption of tourism related facilities will increase sharply. Generally speaking, the power consumption of the region itself is already very tight, and there is not much left to support other places. Power rationing will seriously affect the business activities of a large number of local small and medium-sized enterprises.

Ironically, the only nuclear power plant in the region was shut down by the court in May this year, and the resulting energy gap turned to thermal power generation. According to the data of Hokkaido Electric Power Co., Ltd., 70% of the electricity in Hokkaido is currently provided by thermal power generation. Under the threat of the Russian energy supply interruption, the raw material supply of thermal power generation will be seriously threatened, and the future power supply prospects in the region are uncertain. When thermal power generation becomes a problem, energy supply can only rely on other ways. Fortunately, Hokkaido Island has achieved large-scale photovoltaic development.

Photovoltaic scale and insufficient energy storage

Although Hokkaido gives the impression that it is not suitable for photovoltaic power generation, in fact, several megawatt photovoltaic power stations have been built, and the sunshine and temperature of the site are very suitable for photovoltaic power generation. From the performance point of view, the power generation of crystalline silicon solar panels will decrease with the rise of temperature, so the lower temperature in Hokkaido has become an advantage. This is also an important reason for the large-scale construction of photovoltaic power stations.

However, after 20 years of large-scale construction, Hokkaido has not enjoyed large-scale profits.

The renewable energy grid integration and grid stability in the region are not high. The island's power grid is congested and has poor stability. In addition, because the regional electricity demand has great seasonal changes, and sometimes the power spillover is obvious, the local power grid will implement non compensated reduction measures for solar power generation every year to balance the northern electricity price.

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Therefore, in order to avoid the impact of the reduction measures and improve the scale benefit of photovoltaic power generation, many local projects have been transformed into integrated power plants with the "solar energy + energy storage" mode to store the spilled electricity.

Effectively avoid losses: use energy storage

Last October, “SoftBank”, a well-known Japanese enterprise, built a "solar energy+energy storage" power station with an installed capacity of 102.3 MW covering an area of 132 hectares in Yakumocho, a small town in the south of Hokkaido, which can store energy of 27 MWh. The real estate developer “Tokyu Land” also developed a solar power plant with an installed capacity of 92 MW in the same year, and its lithium ion battery energy storage capacity is 25.3 MWh. In addition, many projects are also under development this year. Although the grid conditions are harsh, the photovoltaic industry in Hokkaido has not been affected.

For the seasonal electricity use in the local area, if the solar energy+energy storage system can be used well and the storage measures are taken, the output benefit of the photovoltaic power station will be greatly improved, and the impact of power limitation on the local tourism industry can also be avoided. For the more decentralized grid system, if the energy storage equipment can be connected to the grid, the large-scale integration of the grid can also be achieved, which is conducive to creating a virtual power station and avoiding the reduction measures of grid operation.

For individual households or enterprises, it can be achieved by installing an easy-to-use energy storage device. SUNPRO recommends this energy storage device ZLES5000B

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In addition, if it is a power plant facility project, SUNPRO also provides solar modules and inverter equipment with various powers to realize one-stop shopping. If you need, you can contact us through the following ways:

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At present, global photovoltaic projects have entered the stage of scale and integration, so it is crucial to ensure the independent operation capability of photovoltaic systems. The frequent occurrence of energy tension in the near future also makes the future energy supply and demand linked to independence. Taking this power limitation measure as an example, if we have sufficient independent supply capacity, we can effectively avoid the economic, credit and personnel damage caused by power outages. If you are looking for an independent power supply, you might as well add this system.

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