Will the inability of many industries in Bangladesh to access power from the grid have an impact on the high power relay market
A surplus of generating capacity means Bangladesh is paying hundreds of millions of dollars in incentives to power producers that do not produce any electricity, according to a government report.
The country's total installed capacity -- the total output of all powe
r plants operating at full capacity -- is 22,031 megawatts, while the country's total electricity demand is only 13,792 megawatts. According to the 2020-21 annual report of the Bangladesh Electricity Development Board (BPDB), the country has a power overcapacity of nearly 60%.
But Shahab Enanghan, an energy expert and professor of international relations at Dhaka's Jahangir Nagar University, said this could push the country into a dangerous situation, given that installed capacity already far exceeds domestic demand.
The excess power caused the blackout
According to the Institute for Energy Economics and Financial Analysis (IEEFA) 2020 report, up to 57% of Bangladesh's installed capacity went unused in fy2018-19.
"The payment of large amounts of capacity to idle power plants helps to push the government to increase subsidies to the Electricity Development Board to cover its financial losses," IEEFA said in a statement. It added that new projects in the pipeline would add to the financial pressure.
"The long-term shift from cheap domestic natural gas to more expensive imported coal and liquefied natural gas (LNG), coupled with the severe and chronic power overcapacity Bangladesh is facing, is likely to continue to increase government subsidies," Simon Nicholas, study author and IEEFA Energy Finance analyst, said in a statement.
For energy watchers in the country, the irony of the power glut is that Bangladesh continues to suffer from frequent blackouts and voltage fluctuations.
About 180 million people are all connected to the grid, but transmission infrastructure cannot always keep up, according to Bangladesh's power authority. Inadequate transmission and distribution lines can lead to blackouts and unreliable voltages, leaving many industries unable to obtain power from the grid.
Market Analysis of high 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.
Basic principles and classification of high 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 high 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 high 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 high power relay
The high 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 high 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 domain of the high power relay
The rapid development of high 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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