With the continuous development of modern industrial technology, the harmonic pollution problem of power quality has become a challenge faced by many companies, which will affect the normal operation of the power system. A reactive compensator can help you solve harmonic governance.   What are harmonics? When the power system is affected by nonlinear loads, current or voltage waveforms with frequencies that are integer multiples of the fundamental frequency in the power system will generate harmonics. Harmonics will reduce power quality and cause some harm to equipment and systems. It will increase equipment losses. When harmonics flow through the equipment, they will generate additional heat, causing equipment overheating, increasing the failure rate, and shortening the service life of the equipment. Harmonics will increase the effective value of the current, resulting in increased line losses and reducing the overall efficiency of the power grid. The presence of harmonics may interfere with the normal operation of other electronic equipment, causing equipment failure or shutdown. Harmonics will cause additional losses in the transformer, causing it to age in a shorter time.  

The production of stainless steel plates adopts the cold rolling mill process, in which cold-rolled stainless steel is mainly produced by the rolling method. Plate rolling is suitable for the mass production of thicker steel plates or the trial production of new steel grades.   The production process of cold-rolled stainless steel strips includes heat treatment, pickling, grinding, leveling, cross-cutting, sorting, cleaning, and packaging. To achieve efficient and high-precision rolling, a cold cluster mill with good rigidity is used. Multi-roll cold rolling mills generally adopt a single-machine reversible rolling method. To improve the yield rate, lead strips are welded at both ends of the stainless steel strip before rolling, and the lead strip part is not rolled. Stainless steel strips need to be annealed before cold rolling, during cold rolling, and after the finished rolling. Cold-rolled stainless steel strips have strict requirements on surface quality, and some elimination and protection measures need to be taken, such as annealing, pickling, degreasing, etc. The finishing requirements of stainless steel strips are relatively special, and a strong straightening machine is required for straightening. Different straightening methods are used according to the products of different thicknesses.  

In the wave of global energy transformation, solar energy, as a clean and renewable energy source, is gradually becoming an important part of the future power supply. With the continuous advancement of technology and the continuous reduction of costs, more and more homes and businesses are beginning to install solar power generation systems. How to ensure that these green energy sources can supply power efficiently and stably, especially in the face of complex and changing grid needs, has become a topic worth discussing. This article will unveil the mystery of the "Power Compensation Device" for you, especially its application in optimizing solar energy production, so that you can easily understand and master this key technology. 1. Challenges of solar power generation: the dual test of efficiency and stability Although solar power generation is environmentally friendly, its output power is seriously affected by natural factors such as weather and time, and has significant intermittent and instability. This characteristic has brought unprecedented challenges to the power grid. When there is insufficient sunlight or no light at night, the amount of solar power generation drops significantly, which may lead to problems such as grid voltage fluctuations and reduced power quality. Therefore, how to improve the utilization efficiency of solar energy while ensuring the stability of power supply has become an urgent problem to be solved

As solar power generation systems become more popular, maximizing power generation efficiency has become a focus of many owners and operators. Reactive power compensators are a cost-effective solution that can significantly improve the power generation quality and grid stability of photovoltaic power plants. This article will provide you with a detailed introduction to the working principle of reactive power compensation, its practical application in solar systems, and the key considerations for selecting a Compensation Device. Basic principles of reactive power compensation Reactive power is different from the actual power (active power) we use in daily electricity. It is a part of power used to establish an electromagnetic field in an AC circuit. Although it does not do actual work, reactive power is essential to maintaining grid voltage stability. In a solar power generation system, devices such as inverters and transformers will generate reactive power requirements. When the reactive power in the system is insufficient, it will cause problems such as voltage drop, equipment heating, and increased line losses, which directly affect the power generation efficiency. Reactive power compensators help maintain system voltage stability and reduce line losses by providing or absorbing reactive power, thereby improvi

In the context of today's energy transformation, photovoltaic energy systems are gradually becoming the core of renewable energy. However, photovoltaic systems have problems such as low power factor and severe energy loss during operation, which hurt their overall efficiency. In this context, various types of Compensation Device equipment have emerged, among which dynamic compensation devices are particularly important. This article will discuss how a dynamic Power Compensation Device can improve the efficiency of photovoltaic energy systems.   How Dynamic Reactive Compensation Works The Dynamic Compensation Device is a device that improves the quality of electric energy by real-time monitoring and adjusting the power factor of the power grid. Its working principle is mainly to actively adjust the reactive power to match the actual load demand of the photovoltaic system, thereby improving the stability and efficiency of the system operation.  

According to the latest data from MIR DATABANK, the top 10 sales of China's low-voltage inverter market in 2024 are: Inovance Technology, ABB, Siemens, Danfoss, INVT, Delta, Schneider, VEICHI, Mitsubishi Electric, and Yaskawa Electric. Data source: MIR DATABANK 01 In 2024, the scale of China's low-voltage inverter market will drop below 30 billion yuan for the first time According to MIR DATABANK data, the scale of China's low-voltage inverter market in 2024 is about 28 billion yuan, a year-on-year decrease of 7%. It has exceeded 30 billion yuan for three consecutive years since 2021, and fell below 30 billion yuan for the first time in 2024. Looking ahead, it is expected that the scale of the low-voltage inverter market will continue to decline in 2025, but the decline will be smaller. In addition, the recent instability of Sino-US tariff policies will lead to an increase in the export cost of China's low-voltage inverters and intensified market competition, but this will also accelerate domestic substitution and prompt companies to actively expan

As the US continues to increase tariff barriers on Chinese cold-rolled steel and its products, the domestic cold-rolled steel processing automation equipment industry is setting off a collective transformation of the "Southeast Asia strategy". The latest industry data shows that China's exports of Cold rolled stainless steel production equipment to Southeast Asia in the first half of 2024 surged 45% year-on-year, becoming a bright spot in the foreign trade environment. Market reconstruction under the tariff stick The latest tariff list of the US Department of Commerce shows that Chinese-made Automated cold rolling mill for stainless steel is included in the 25% punitive tariff range, which directly led to a 62% year-on-year drop in exports to the US from January to May this year. "We originally had 30% of our production capacity for the US market, and now we must urgently turn." The foreign trade director of a leading enterprise in Guangdong revealed. In sharp contrast, the Southeast Asian market is experiencing explosive growth. After the RCEP, Vietnam, Indonesia, and other countries generally reduced import tariffs on cold-rolled equipment to below 5%. According to statistics from the China Chamber of Commerce for Import and Export of Mechanical and Electrical Products, in the first quarter of 2024, China's exports of cold rolling equipment to ASEAN reached US$870 million, exceeding 60% of last year's total amount. Industrial chain transfer creates new opportunities Five brand-new High-efficiency stainless steel processing lines are being installed simultaneously in the China-invested Industrial Park in Haiphong City, Vietnam. "These are all prepared to

I. Policy background and scope of impact Since 2018, the United States has imposed a 25% tariff on imported steel ("Section 232") and continued to strengthen trade protection measures. In 2024, the Biden administration will further expand the scope of tariffs on China, and some cold-rolled steel and downstream automation Equipment for Cold Rolling stainless steel will face an additional 10-25% tariff barrier. This move directly affects the global steel supply chain and the export pattern of Cold Rolling equipment. II. Impact on the cold rolling automation equipment industry Rising export costs and frustrated competitiveness The export cost of cold rolling mill equipment for steel industry (such as rolling mills and control systems) manufactured in China to the United States has increased by 15-30%, weakening its price advantage. Some US customers have turned to Korean and German suppliers, resulting in the loss of orders from domestic manufacturers. It is expected that exports to the United States will drop by 20-25% in 2025. Supply chain reconstruction is accelerating The United States promotes "Friend-shoring", and cold rolling equipment manufacturers need to set up factories in Mexico and Southeast Asia to avoid tariffs. Companies such as Yuanjing Automation may consider building joint ventures with local partners (such as Mexican Industrial Group) to take advantage of the zero tariff policy of USMCA (United States-Mexico-Canada Agreement). Technical standard

The global cold-rolled steel industry is currently in a critical stage of intelligent upgrading and green transformation. This trend has a multi-dimensional impact on our export business. The main opportunities and challenges are analyzed as follows: 1. Incremental opportunities in emerging markets Southeast Asia/India market expansion With the restructuring of the global industrial chain, Southeast Asia and India are accelerating the formation of automotive and home appliance manufacturing industry clusters. Data shows that the demand for Cold Rolling steel in the region will maintain an annual compound growth rate of 4-6% from 2024 to 2025, directly driving a surge in demand for production line construction. Our company can focus on the equipment replacement window period in Vietnam, Thailand, and other countries in the field of new energy vehicle steel. RCEP policy dividends (1) Tariff advantage: After the implementation of the agreement, the tariff on core components such as Cold Rolling Mill frames exported to Indonesia/Malaysia will be reduced from 8% to 3%, driving the price of the whole machine down by 5-8%, significantly enhancing the bidding competitiveness. (2) Standard coordination: ASEAN countries have accelerated the adoption of China's GB standard, reducing our equipment transformation costs by about 15%. (3) Cooperation model innovation: Through cooperation with local partners such as

The Cold Roll Mill consists of left and right coilers, a leading engine arch, a press cylinder, and other auxiliary equipment, with a maximum design speed of 480m/min. The Cold Reversing Mill electrical system adopts Siemens PLC S7-1500 control and supports PROFINET/DP communication, and the transmission system is equipped with a high-performance AC vector inverter to meet the needs of high-precision speed and tension control. The AGC thickness control system integrates monitoring, pre-control, second flow, acceleration and deceleration thickness compensation, and tension AGC functions to ensure the high-precision requirements of finished plates. Precise tension control is achieved through the tension sensor between the racks, the automation system completes sequential control and continuous adjustment, the human-machine interface supports real-time monitoring, fault diagnosis, and online monitoring, and is equipped with multiple safety interlocks to ensure safe operation.

The Cold Rolling Mill consists of left and right coilers, the main machine arch, a press cylinder, and other auxiliary equipment. The maximum design speed is 400m/min. Automatic control greatly improves production efficiency. The Cold Reversing Mill electrical system adopts Siemens PLC S7-1500 control and supports PROFINET/DP communication, and the transmission system is equipped with a high-performance AC vector inverter to meet the needs of high-precision speed and tension control, reduce energy consumption and maintenance costs, and extend the service life of the Cold Roll Mill. The AGC thickness control system integrates monitoring, pre-control, second flow acceleration, and deceleration thickness compens

The equipment consists of a sawing unit, roller table, material rack, trolley, gantry, and material platform, which can accurately see materials according to the set length. The gantry mechanism automatically stacks the sawn materials through the internal lifting platform and clamp and finally transports them to the designated location by the crane, which can reduce manual intervention and improve production efficiency. The electrical system is controlled by Siemens PLC S7-1200, which supports Profinet bus communication, and the transmission system uses Siemens SINAMICS G120 series inverter to achieve efficient and precise control. PLC and variable frequency transmission systems ensure cutting length and stacking accuracy, reducing material waste. The equipment has sequential control, continuous adjustment control, positioning control, and stacking sequence control functions. The human-machine interface is intuitive and easy to use, supports process parameter setting and storage, and simplifies the operation process. Real-time display of dynamic process, fault diagnosis, and online monitoring information, and equipped with multiple safety protection interlocks to ensure the safe operation of the equipment. Automatic control reduces labor costs, and precise cutting reduces material loss. Our company has successfully obtained certification for its main products (document number ISO90013C) and developed several patents, including electric transmission and control systems for rolling mills and annealing production lines. We specia

In November 2024, the Guohui Color Coating Line equipped by our company was successfully debugged in Zhongshan. The Coating Line equipment structure consists of an unwinder, a stitching machine, a cleaning unit, a tension roller unit, a looper unit, an oiling unit, a curing furnace, and a winder. The unit is designed to have a maximum process speed of 30m/min. The electrical system uses S7-1500 series products and PROFINET/DP communication. The Coil Color Coating Line unit has an inlet and outlet looper unit to store materials, which can realize non-stop loading and unloading of materials. The PLC control system is equipped with a human-machine interface, and a 15-inch color touch screen is selected to be configured at the entrance and exit console. AC transmission is used to reduce maintenance costs. Basic automation is directly oriented to the production process, completing the sequential control and continuous adjustment control of the production process, and the computer realizes the human-machine interface program control; the operation screen, dynamic process screen display, including fault display, fault diagnosis, and online monitoring and other functions, is equipped with multiple safety protection interlocks to achieve safe operation.

In April 2024, the Gaoming Jiye No. 4 straightening machine equipped with an electric drive, AGC control, and dynamic filter compensation device by Yuanjing Automation Equipment Co., Ltd. was successfully commissioned on-site thanks to the hard work of after-sales colleagues.    The Gaoming Straightening And Finishing Machine is a set of efficient and precise strip processing equipment consisting of an unwinder, stitching machine, tension roller group, Stretcher Leveling, leveling machine, looper/elevator, oiling machine, and winding machine. The maximum process speed of this equipment can reach 300 m/min. It adopts the PLC S7-1500 control system and Profinet bus communication, combined with AC transmission technology, which significantly reduces maintenance costs. Through the mechanical differential mechanism, the elongation can achieve infinitely continuous adjustment of 0-3.0% to meet the processing requirements of different materials. This Tension Leveler can effectively solve the common problems of flatness and elongation control in customers' strip processing processes and improve product quality. Its automatic control system has the function of automatic deceleration and parking at a fixed length and fixed coil diameter to ensure production accuracy and efficiency. At the same time, the Straightening Equipment supports rewinding, straightening, leveling, and joint control modes to meet various process requirements. The five-element six-heavy bending roller system design, combined with the role of the tension roller and straighten