Will the global power crisis affect the market of the power relays
On the one hand, the global energy pattern is still in drastic transition, on the other hand, the global energy consumption is soaring under the background of frequent extreme climate phenomena
Many countries around the world face a power crisis: recently, many countries around the world appear the power supply is tight or even short of the situation. The reasons are not only caused by the high-temperature record in the northern hemisphere, but also by the energy policies of some countries and the current international situation.
Recently, Japan's Ministry of Economy, Trade and Industry has issued a series of power-saving warnings, warning of severe power supply and demand in Tokyo. Messi also said it would implement all power supply measures, but expected power supplies to remain difficult, with reserves of less than 5 percent of capacity -- the minimum required for a stable supply of electricity at 3 percent.
According to reports, the Cabinet held a meeting on electricity supply and demand for the first time in nearly five years and decided to call on households and businesses to save electricity from July 1 to September 30.
In addition to Japan, more than a billion people in India, Pakistan, Myanmar, Sri Lanka and other Asian countries are suffering from intermittent power cuts, with little relief in sight. An Indian official says more than 700 million people in 16 of the country's 28 states have been struggling with power cuts of between two and 10 hours a day.
France, traditionally the largest exporter of electricity in Europe, may have to import electricity this winter due to a shortage of electricity, which is priced much higher than neighboring markets, analysts said.
In a worst-case scenario, as many as 6 million homes in the UK could be rationed in early 2023, mainly during morning and evening rush hours, The Times said.
The Us may not have enough electricity to survive the summer heat wave, the Washington Post reported recently. The West and Midwest are estimated to be at risk of power grid failures in summer 2022.
The U.S. Power Department has warned that more parts of the country will face power shortages or blackouts this summer, and that rolling blackout may be used to avoid grid failure.
Record-breaking heat in the northern hemisphere this summer is clearly one of the direct causes of the current power crisis in many countries.
Market introduction of power relays
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 relays
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 relays 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 relays 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 relays
The power relays 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 relays, 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 relays
The rapid development of power relays 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.
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, 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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