The official operation of the Quanxin 220kV Substation of Hebei Xinda Steel Group Co., Ltd. is undoubtedly a key milestone in the process of building a green and efficient energy system. This substation not only solidified its energy foundation with advanced power carrying capacity, but also achieved a remarkable cost reduction of over 1.9 million yuan in its first month of operation through a precise and lean management and control model. It has injected strong impetus into the enterprise's energy management transformation and opened up a brand-new situation of cost reduction and efficiency improvement.
Put into operation and draw the sword immediately
Reshape the energy "blood supply" pattern
Before the Quanxin 220kV substation was put into operation, the enterprise's power supply was confronted with pain points such as scattered networks and insufficient allocation flexibility. After the substation is put into operation, it acts like the "central nervous system" of energy, establishing a dual-track coordinated power supply system of "internal and external sources".
If we interpret it vividly with the "energy pipeline network" model, the internal power source is like a "living water spring", the purchased power is like a "backup water source", and the substation is an "intelligent distribution station". It precisely integrates the output of the "spring" and scientifically regulates the supply of the "water source", enabling the power supply of each production line equipment, which is the "water terminal", to shift from the past "extensive transmission" to "precise drip irrigation". It has completely reshaped the energy "blood supply" pattern of enterprises and created solid basic conditions for cost control.
The first battle is the benchmark
A "model" for the regulation and control of production line collaboration
Pre-planning: "Intelligent migration" of loads. Relying on the intelligent monitoring system of the substation, the "power supply binding" relationship between the production line equipment and the main transformer is sorted out in advance. Before the maintenance, through the flexible switching technology of the substation, the associated loads were "imperceptibly transferred" to the backup main transformer, effectively reducing the basic load corresponding to the main transformer of the maintenance unit and lowering the "risk point" of power costs from the source.
The game in the process: "Dynamic Balance" of Energy. The substation put into operation has brought about a qualitative leap in energy dispatching. During the maintenance period, the output of the internal power source is monitored in real time, the energy medium is dynamically scheduled, and priority is given to ensuring the full and stable supply of the internal power source. The synchronous linkage production line optimizes the power consumption rhythm at a "minute-level" frequency, achieving a "dynamic balance" between power supply and demand, and the cost curve continues to decline.
Post-event review: "Iterative Upgrade" of the system. After the first victory, the energy team, relying on the data from the substation, reviewed the entire process of regulation and control, improved the "equipment energy file", refined the "hourly" dispatching mechanism, and transformed "practical experience" into "control standards", making the management system of the substation after its operation more precise and efficient through continuous iteration.
System reconstruction
The energy revolution driven by operation
The operation of the Quanxin 220kV substation is by no means a simple "hardware upgrade", but rather a "fulcrum" to drive the reconstruction of the energy management system.
Digital Twin: Creating "transparent" Management and control. The substation is equipped with smart electricity meters and energy monitoring modules, which are deeply integrated with the company's "Energy Control Digital Platform" to build a "digital twin" model for equipment power consumption. Through this model, data such as load fluctuations and the cost of purchased electricity can be viewed on a single screen, transforming energy management from "empirical judgment" to "data-driven decision-making", and the accuracy of regulation has improved exponentially.
Collaborative upgrade: Breaking down "departmental barriers". Taking the substation as the core, an "energy dispatching operation room" is established, with production, equipment, environmental protection and other departments deeply embedded, forming a "electricity - production - cost" linkage mechanism. From now on, the shutdown and start-up of production lines, equipment operation and maintenance, and energy optimization are no longer "individual battles", but rather "coordinated campaigns" centered around substation regulation, ensuring that cost reduction and efficiency improvement run through the entire production chain.
Value fission
The "butterfly effect" brought about by operation
The cost reduction effect of the Quanxin 220kV substation after its operation is not only a "single-point breakthrough", but also the starting point of "value fission".
Cost side: By accurately grasping the electricity price difference of 0.006 yuan per kilowatt-hour between 110kV and 220kV, the monthly electricity cost can be reduced by approximately 600,000 yuan. After the Quanxin 220kV substation was put into operation, the 110kV substation was converted to a 220kV substation, reducing the basic capacity by 60,000 kVA per month and saving 1.296 million yuan in basic capacity fees. Deeply explore the cost optimization space among voltage levels, relying on the high-voltage transmission efficiency advantage of 220kV substations, and by establishing a dynamic load migration mechanism between 110kV and 220kV voltage levels, implement the "peak avoidance and valley utilization" power consumption strategy in high-load production lines such as heating furnaces in the steel Rolling General Plant - shift the power consumption period of non-critical equipment to the low electricity price range of 220kV. By integrating the peak-valley electricity price difference mechanism between internal power and purchased power, and taking advantage of the higher power acceptance capacity of the 220kV power grid to consume internal power, the combined measures achieved a monthly cost reduction of 1.9 million yuan, verifying the cost optimization efficiency of the "high-voltage transmission + refined dispatching" model with data.
Management end: With the substation as the center, a more refined and intelligent energy management system is constructed to promote the in-depth transformation of the company's production management towards "lean and digital".
Ecological end: Enhance the utilization rate of internal power sources, reduce reliance on purchased electricity, assist the company in lowering carbon emissions, inject the "Xinda Solution" into green manufacturing, and demonstrate social responsibility and commitment.
Save resources and add color to paint a green homeland; reduce consumption and write a new chapter of low-carbon. From its commissioning and debut to the first victory, from system reconstruction to value explosion, the Quanxin 220kV Substation of Hebei Xinda Steel Group Co., Ltd. is writing a brand-new chapter in energy management with "lean control" as its pen. In the future, with the deep integration of substations and the company's energy network and the continuous evolution of the management and control system, it will surely become a "power engine" for cost reduction and efficiency improvement, driving the company to accelerate its progress on the track of high-quality development, making the "green and efficient" energy color more prominent, and providing a benchmark demonstration for the transformation of energy management in the industry. Contribute Xinda's wisdom and strength to the realization of the "dual carbon" goals!
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