Super-capacitor power grid current stabilization system

Abstract

A super capacitor power grid current stabilization system comprises an AC bus, a medium-voltage transformer, a bidirectional converter, a bidirectional DC-DC, a super capacitor, a signal acquisition module and a signal processing module, the super capacitor is connected with the AC bus through the bidirectional DC-DC, the bidirectional converter and the medium-voltage transformer in sequence, the signal acquisition module is connected with the AC bus, and the signal processing module is connected with the signal acquisition module. And the signal processing module is connected with the bidirectional converter image. The system is used for adjusting AC bus power fluctuation suppression caused by IT load changes, the effect of power stabilization of a computing power data center power grid is achieved, and safe and stable operation of a power system is achieved.

Description

Technical Field

[0001] The present invention belongs to the field of power supply and distribution in data centers, and more specifically relates to a supercapacitor power grid current stabilization system. Background Art

[0003] As a new productivity, the market demand for high-computing chips and servers has grown rapidly. In particular, the high-performance chips such as H100 and H200 launched by NVIDIA in recent years have brought about the rapid development of large-scale artificial intelligence model training. With the rapid development of the field of artificial intelligence, the high computing power required by AI chips during operation has led to a sharp increase in power consumption, and the power consumption of computing data centers has also increased sharply. For example, the peak power consumption of a single H100 chip is as high as 700W, and the annual power consumption of a single chip has reached more than 6MW. Therefore, with the development of AI computing power, it has posed a huge challenge to the power system.

[0004] At present, in the actual operation of computing power data centers, the real-time power of computing power data centers will experience periodic cliff-like power drop phenomena. For example, in a computing power data center, within a power oscillation cycle of about 36 seconds, the total power will drop twice in an instantaneous cliff-like manner. The low power state lasts for about 4 seconds, and then the power of the computing power data center recovers linearly, with the maximum power drop reaching about 80%. This periodic power oscillation has a huge impact on the safe operation of the power grid. In order to ensure the safety of the power grid, it is urgent to eliminate this power oscillation phenomenon in computing power data centers.

[0005] The power oscillation of the computing power data center is a phenomenon found in the actual operation of computing power chips and computing power servers. It is difficult to solve this phenomenon from the optimization of computing power chips and computing power servers. Starting from the power system of the computing power data center, the power supply and distribution system is further optimized to periodically absorb and release the energy changes of the power oscillation of the computing power data center, maintain the stability of the power of the power grid, and thus solve this phenomenon of power periodic oscillation. At present, the most common way to regulate power is to use batteries to store and release electrical energy. Lithium batteries, lead-acid batteries and other batteries are chemical power sources. Although they have the characteristics of high energy density, their power density is low, and they have large capacity for high-power energy storage systems, slow charging and discharging speed, short life, and high system safety requirements. Supercapacitors are physical power sources with the advantages of good energy storage timeliness, high power density, fast charging speed, long cycle life, safety and reliability, green and environmental protection, ultra-fast high-frequency charging and discharging capabilities, life of up to 1.5 million times / 10 years, and a wide temperature range of -40 to +65℃. Therefore, in response to the power oscillation phenomenon in computing data centers, developing a supercapacitor grid current stabilization system that is fast, has an ultra-long life, and is safe and reliable is an important technical approach to solving the problem of grid safety. Summary of the invention

[0006] The purpose of the present invention is to overcome the problems existing in the above-mentioned prior art and to provide a supercapacitor grid current stabilization system suitable for the power supply and distribution field of computing power data centers, so as to effectively ensure the safe operation of the computing power data center power grid.

[0007] The technical solution of the present invention is as follows: A supercapacitor grid current stabilization system, characterized in that it comprises: an AC bus, a medium voltage transformer, a bidirectional converter, a bidirectional DC-DC, a supercapacitor, a signal acquisition module, and a signal processing module; The supercapacitor is connected to the AC bus in sequence through a bidirectional DC-DC, a bidirectional converter and a medium voltage transformer; The signal acquisition module is connected to the AC bus and is connected to the bidirectional converter through the signal processing module; The supercapacitor is used to absorb and release electrical energy, and is used to adjust AC bus power fluctuations caused by IT load changes; The medium voltage transformer is used to adjust the voltage matching between the bidirectional converter and the AC bus; The bidirectional converter is used for power conversion between the medium voltage transformer and the super capacitor; The bidirectional DC-DC is used for DC voltage matching between the bidirectional converter and the supercapacitor; The signal acquisition module is used for collecting and monitoring the power status of the AC bus; The signal processing module is used to process changes in AC bus power parameters. When the real-time power of the AC bus is less than or equal to the charging setting power, the bidirectional converter is switched to the charging state to charge the supercapacitor; when the real-time power of the AC bus is greater than or equal to the discharge setting power, the bidirectional converter is switched to the discharge state, and the power stored in the supercapacitor is released to the AC bus.

[0008] In the above technical solution, the supercapacitor is composed of a plurality of supercapacitor monomers connected in series and parallel, which can be a single supercapacitor group, a combination of multiple supercapacitor groups, or a combination of a supercapacitor group and a battery group.

[0009] Preferably, the bidirectional converter can be directly connected to the low-voltage AC busbar to directly adjust the power change of the power grid on the low-voltage side.

[0010] Preferably, the supercapacitor can be directly connected to the bidirectional converter to directly match the DC side voltage range of the bidirectional converter in a series-parallel manner.

[0011] Preferably, the discharge setting power of the signal processing module is equal to the charge setting power, and the discharge setting power may also be greater than the charge setting power.

[0012] Preferably, the charge and discharge conversion time of the bidirectional converter does not exceed 100 ms.

[0013] Compared with the prior art, the present invention has the following advantages and outstanding technical effects: the present invention closely meets the needs of safe operation of the computing power data center power grid, fully utilizes the advantages of supercapacitors' ultra-fast high-frequency charging and discharging, wide temperature adaptability range, ultra-long life, high safety, high reliability, and linear charging and discharging, and designs a grid current stabilization system suitable for power oscillations in the computing power data center, which can store grid energy when the power of the computing power data center decreases, and release energy to supplement the computing power when the power of the computing power data center increases, thereby achieving the effect of stabilizing the power of the computing power data center power grid and realizing safe and stable operation of the power system. FIG1 is a schematic diagram showing the principle of an embodiment of a supercapacitor grid current stabilization system provided by the present invention.

Claims

1. A supercapacitor grid current stabilization system, characterized in that: include: AC bus, medium voltage transformer, bidirectional converter, bidirectional DC-DC, super capacitor, signal acquisition module, and signal processing module; The supercapacitor is connected to the AC busbar in sequence through a bidirectional DC-DC, a bidirectional converter and a medium voltage transformer; The signal acquisition module is connected to the AC bus and is connected to the bidirectional converter through the signal processing module; The supercapacitor is used to absorb and release electrical energy, and is used to adjust AC bus power fluctuations caused by IT load changes; The medium voltage transformer is used to adjust the voltage matching between the bidirectional converter and the AC bus; The bidirectional converter is used for power conversion between the medium voltage transformer and the super capacitor; The bidirectional DC-DC is used for DC voltage matching between the bidirectional converter and the supercapacitor; The signal acquisition module is used for collecting and monitoring the power status of the AC bus; The signal processing module is used to process changes in AC bus power parameters. When the real-time power of the AC bus is less than or equal to the charging setting power, the bidirectional converter is switched to the charging state to charge the supercapacitor; when the real-time power of the AC bus is greater than or equal to the discharge setting power, the bidirectional converter is switched to the discharge state, and the power stored in the supercapacitor is released to the AC bus.

2. A supercapacitor grid current stabilization system according to claim 1, characterized in that: The supercapacitor is composed of a plurality of supercapacitor monomers connected in series and in parallel, and can be a single supercapacitor group, a combination of multiple supercapacitor groups, or a combination of a supercapacitor group and a battery group.

3. A supercapacitor grid current stabilization system according to claim 1, characterized in that: The bidirectional converter can be directly connected to the low-voltage AC busbar to adjust the power change of the power grid directly on the low-voltage side.

4. A supercapacitor grid current stabilization system according to claim 1, characterized in that: The supercapacitor can be directly connected to the bidirectional converter and directly matches the DC side voltage range of the bidirectional converter in a series-parallel mode.

5. A supercapacitor grid current stabilization system according to claim 1, characterized in that: The discharge setting power of the signal processing module is equal to the charge setting power, and the discharge setting power may also be greater than the charge setting power.

6. A supercapacitor grid current stabilization system according to claim 1, characterized in that: The charge and discharge conversion time of the bidirectional converter does not exceed 100ms.

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