To prevent electricity production accidents, the National Energy Administration publicly solicited opinions: It is plans to specify that large -scale electrochemical energy storage power stations shall not be selected from ternary lithium batteries and sodium sulfur batteries

Recently, the official website of the National Energy Administration released news that in order to do a good job in the supervision of power safety and effectively prevent the power production accidents, the State Energy Administration organized relevant units and experts in the power industry to summarize the successful experience of preventing power production accidents from 2014, absorbing to learn The lesson lesson, combined with the promulgated standards and specifications, carried out revision work on the "Twenty -five Key Requirements to Preventing Power Production Accidents" (Guoreng Safety [2014] No. 161), and formed the "Twenty -five to prevent electricity production accidents from the power production accident. Requirements for items (2022) (Draft for Opinions) "(hereinafter referred to as" Draft for Solicitation of Opinions ").

The reporter of "Daily Economic News" noticed that the content of the fire accident of electrochemical energy storage power stations in the "Draft for Soliciting Opinions" has attracted market attention.

The "Draft for Soliciting Opinions" proposes that the medium and large -scale electrochemical energy storage power stations shall not use ternary lithium batteries, sodium sulfur batteries, and should not be used to use power batteries; when the staircase is used to use power batteries, consistent screening should be performed and combined with traceability data for safety. Evaluate.

A portable energy storage device picture source: Xinhua News Agency

The lithium -ion battery equipment shall not be set in person dense places

The "Draft for Soliciting Opinions" released this time puts forward detailed requirements for preventing the fire accident of electrochemical energy storage power stations.

The "Draft for Solicitation of Opinions" pointed out that the site of the electrochemical energy storage power station should not be posted or set up in a place for production, storage, and operating flammable and explosive dangerous goods. Set up in important power facilities protection areas.

The "Draft for Soliciting Opinions" particularly emphasized that medium and large -scale electrochemical energy storage power stations must not choose ternary lithium batteries, sodium sulfur batteries, and should not be used to use power batteries. assess safety.

Regarding the multiple requirements of the "Draft for Soliciting Opinions", Liu Yong, Secretary -General of the China Chemical and Physical Power Industry Association Energy Storage Application Branch, said in a telephone interview with the reporter of "Daily Economic News" that from the current domestic energy storage development, use, use, use, use The situation of ternary lithium batteries is relatively small; sodium sulfur batteries are also the main technology of foreign manufacturers, and there are not many domestic conditions. Therefore, the relevant provisions of the "Draft for Soliciting Opinions" have a limited impact on the development of the domestic energy storage industry from the current point of view.

In addition to the above requirements, the "Draft for Soliciting Opinions" also proposes that lithium -ion battery equipment shall not be set up in person -intensive places, and shall not be set inside or its underground space inside or active buildings. The lithium -ion battery equipment should be arranged in a single layer, and the prefabricated cabin should be used. In the station -type lithium -ion battery equipment, the battery capacity of a single fireproof partition should not exceed 6MW • H; when exceeding 6MW • H, a fixed automatic fire extinguishing system should be provided indoors.

Emphasize preventing the explosion of the hydrogen system

"Daily Economic News" reporter also noticed that the "Draft for Soliciting Opinions" released this time also focused on preventing the explosion of the hydrogen system.

The "Draft for Soliciting Opinions" proposes that when the generator is cooled by hydrogen, the pipelines that replace the air must be isolated and strictly blocked. When the hydrogen -making and hydrogen supply pipelines, valves or other equipment are frozen, steam or hot water thaw, and it is forbidden to grill with fire.

The purity of hydrogen in the hydrogen cold system must not be less than 96%, and the oxygen content should not be greater than 1.2%; in the hydrogen -making equipment, the hydrogen content of the gas should not be less than 99.5%, and the oxygen content should not exceed 0.5%. If the standard cannot be met, it should be processed immediately until it is qualified.

The "Draft for Soliciting Opinions" pointed out that it is necessary to prevent the explosion of pressure vessels such as hydrogen tanks; hydrogen -making stations should adopt a reliable pressure adjustment device, and the liquid level is added to the lock lock protection device and hydrogen side hydrogen purity table, online hydrogen hydrogen Medium oxygen and online oxygen hydrogen monitoring instruments to prevent explosion of hydrogen -making equipment systems.

Daily Economic News

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