Does the EU coal power emergency have an impact on the power relay market
The latest report, "Coal Is Not Making a Comeback: Europe predicts Limited carbon growth," is released today by British think tank Ember. Using a series of quantitative analyses, the report concludes that the currently planned restart of coal-fired power plants in Europe will have a limited impact on Europe's carbon emissions and climate change commitments. Overall, even in the worst-case scenario, the EU's emissions would increase by only 1.3% a year.
Since February of this year, Europe has been facing an increasingly severe gas supply crisis. Gas supplies from Russia, Europe's biggest supplier, now look likely to fall further ahead of winter.
While the European Union has taken steps to increase gas storage, Germany, Austria, France, the Netherlands and other countries plan or have already started to restart coal power generation.
The report's analysis finds that 14GW of coal-fired power is already on standby, increasing the EU's total installed capacity to 920GW (up 1.5%), while increasing existing coal capacity by 12% to 109GW. Most of the new coal-fired generation is in Germany, where the government has approved 8GW of spare capacity.
In addition, the Netherlands allows hard coal plants (4.5GW) to operate at full capacity until the end of 2023, rather than at a 35% loan rate. France will open 595MW coal-fired power plants this winter. Austria suspended the decommissioning of 246MW units. These units can only generate power in emergencies and remain on standby at other times.
In a worst-case scenario, the coal-fired reserve plant will operate at a load rate of 65% in 2023, generating 60Twh of electricity, enough to power Europe for a week, the report argues.
This would add an additional 30 million tonnes of co2 emissions in 2023, representing 1.3% of the EU's total emissions in 2021 and 4% of annual emissions from the power sector.
Market introduction of power relay
Industry competition and marketization degree: relay industry development is more mature, the market competition is more sufficient, major producing countries including China, the United States, Japan, Germany, etc., including the United States, Japan, Germany enterprise occupies most of the high-end relay market share, is mainly used in industrial automation control, automotive, communications, aerospace and other fields. The output of relays of Chinese enterprises accounts for about half of the global output of relays, but they are mainly medium and low-end products, which are mainly used in household appliances, electricity, automobiles and other fields.
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Basic principles and classification of power relay
Basic concept and principle of relay: relay is a control component that automatically disconnects when the input parameters (such as electricity, magnetism, light, heat, sound and so on) in the circuit reach a specified value, which can make the output parameters of the circuit change in a predetermined step. In circuits, relays mainly control, protect, regulate and transmit information. The relay has an induction mechanism that reflects external input parameters, an executive mechanism that realizes "on" and "off" control of the controlled circuit, and an intermediate comparison mechanism that compares, judges and converts the size of the input.
As a control element, relays have the following functions:
(1) Expand the control range, such as multi-contact relay control signal reaches a certain value, according to the different forms of the contact group, at the same time open and close the multi-circuit;
(2) amplification, such as sensitive relay, intermediate relay, etc., with a very small amount of control, can control a large power circuit;
(3) comprehensive signals, such as when multiple control signals are input into the multi-winding relay in a specified form, after comparison and synthesis, to achieve the predetermined control effect;
(4) Automatic, remote control, monitoring, such as the relay on the automatic device and other electrical appliances together, can form a program control circuit, so as to realize automatic operation.
In the competition of the power relay market, enterprises in the United States, Japan and other developed countries constantly consolidate their dominant position in the global market by establishing technical standards, controlling core technologies, strengthening the integration of industrial chains, and firmly mastering the dominance of technical standards and international rules. In recent years, in order to further strengthen the core competitiveness, enterprises in the United States, Japan and other developed countries continue to expand power relay products and speed up technology integration. Their business scope has broken through simple relay manufacturing and developed to industrial control, system integration and other fields. The key to the competition in the high-end field has developed from the competition of quantity to the competition of the basic research and development of new relays, key materials, special equipment and other core products.
The raw material of the power relay
The power relay cost of relay is mainly determined by raw materials, which are mainly iron, silver, copper and other metals, accounting for about 74.4% of the production cost, labour and manufacturing costs accounting for 13.7% and 11.9% respectively, silver, copper and iron materials accounting for 36%, 21% and 7% of the raw material cost respectively. The price of three raw materials has a certain impact on the profitability of the whole industry. In addition to the main metal raw materials of the power relay, engineering plastics and enamelled wire are also important components of relays, and the overall supply of raw materials is stable at present.
The application of the power relay
The rapid development of power relay emerging relays. The application field of relays has changed from traditional application fields, such as household appliances and power automation control equipment, ships and new energy. Relay products have been transformed from low-end products to high-end products, such as high-voltage DC relay, high-performance industrial control relay, low-power energy-saving relay, new-generation communication relay, high-frequency relay, relay control components and other high-performance relays. The value chain of the relay industry is constantly extending to the high-end. In terms of product performance, it is developing towards the direction of more sensitive (low power consumption), smaller volume and higher performance (such as high-frequency relay).
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Juzlong Electric Co., Ltd.
is a high-tech industry integrating research, development and sales. The main products include
, small intermediate relay, solid state relay, temperature control instrument, counter, microcomputer time control switch and other piezoelectric devices. Juzlong took the lead in implementing lean production in the industry and established a small-displacement, multi-batch pull production model with Junlong characteristics.
Based on the operating system of business value stream, the organization forms an information flow control triggering mode from manufacturing end to business order, and builds a stable production management system.
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