A cabinet data center shielding effectiveness linkage control method and system

Abstract

The present application relates to the technical field of electromagnetic shielding and operation control of box-type data center, and particularly relates to a shielding effectiveness linkage control method and system for box-type data center, which generates inter-box shielding airflow coupling topology, leakage influence coefficient and leakage sensitive frequency band set based on controlled disturbance samples, circumscribes target shielding boundary and risk influence range during operation, forms electromagnetic silence zone in combination with cabinet leakage contribution, and controls variable frequency temperature control equipment to perform spectrum avoidance; outputs corresponding control results after re-measurement through a stable window. The scheme helps to improve linkage control reliability and shielding effectiveness maintenance capability before and after the action of the shielding boundary.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic shielding and operation control of box-type data centers, and more specifically, it relates to a shielding effectiveness linkage control method and system for a box-type data center. Background Art

[0002] A box-type data center is usually formed by splicing two or more boxes, and structures such as cabinets, frequency-conversion temperature control equipment, air exchange channels, shielding doors, cable interfaces and inter-box connecting parts are arranged inside thereof. During the operation of this type of data center, attention needs to be paid to the service load of the cabinets, the temperature control state, the differential pressure of the boxes and the electromagnetic leakage state of the shielding boundary at the same time.

[0003] In the existing operation control of box-type data centers, shielding effectiveness maintenance, access control, interface maintenance, air exchange control and temperature control adjustment are often performed separately according to their respective collected states. For example, the shielding boundary may enter a processing process according to an electromagnetic leakage sampling value or a maintenance application, the temperature control equipment is mainly adjusted according to the cold aisle temperature, return air temperature or differential pressure state, and the cabinet load control mostly focuses on service or power consumption requirements. The above processing methods can respond to a single abnormality or a single action, but in the multi-box splicing state, there may be a coupling relationship formed by electromagnetic leakage propagation and differential pressure disturbance propagation among the shielding doors, air exchange channels, cable interfaces and inter-box connecting parts; changes in the cabinet load may change the leakage response at the corresponding frequency point, and the operating frequency of the frequency-conversion temperature control equipment may also be related to the remaining leakage margin of the shielding boundary. If there is a lack of coupling calibration data covering differential pressure disturbance, cabinet load disturbance and frequency conversion disturbance, it is difficult to determine the risk influence range of the target shielding boundary during operation, and it is also difficult to judge which cabinets have a high leakage contribution to the target shielding boundary. Further, before door opening, air exchange or interface maintenance, if the electromagnetic silence zone cannot be formed at the same time and the spectrum avoidance operating frequency set cannot be screened out, the coordination relationship between shielding control and temperature control operation is prone to be insufficient; if there is no re-measurement in the stable window after the action, it is also inconvenient to confirm whether the permission, alarm or recovery conditions are met.

[0004] Therefore, it is necessary to propose a shielding effectiveness linkage control method and system for a box-type data center, so as to integrate shielding coupling calibration, leakage contribution calculation, electromagnetic silence, spectrum avoidance and re-measurement recovery into a unified control process. Contents of the Invention

[0005] In view of the deficiencies existing in the prior art, the purpose of the present invention is to provide a shielding effectiveness linkage control method and system for a box-type data center.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A shielding effectiveness linkage control method for a box-type data center specifically includes the following steps: S1, Obtain the shielded temperature control coupling calibration data under the multi-box splicing state. The calibration data is obtained from the controlled response samples of the covering pressure difference disturbance, cabinet load disturbance and frequency conversion disturbance. S2, convert the shielded temperature control coupling calibration data into linkage control parameters, the linkage control parameters including the inter-box shielded airflow coupling topology, leakage influence coefficient and leakage sensitive frequency band set; S3. During operation, identify the target shielding boundary, determine the shielding risk impact range based on the shielding airflow coupling topology between the enclosures, and calculate the leakage contribution value of the cabinets within the shielding risk impact range to the target shielding boundary. S4. Before opening the door, ventilating, or maintaining the interface at the target shielding boundary, select the cabinet to be silenced to form an electromagnetic silence zone based on the leakage contribution value, and filter the spectrum avoidance operating frequency set based on the leakage sensitive frequency band set to control the operation of the variable frequency temperature control equipment. S5 performs a stable window retest after the silent action and spectrum avoidance action are completed. Based on the retest results, it generates access control commands, ventilation control commands, interface maintenance permission commands, shielding maintenance alarms, or control results to restore normal operation.

[0007] This invention also provides a box-type data center shielding performance linkage control system, comprising: The screen temperature disturbance calibration module is used to obtain shielded temperature control coupling calibration data under multi-box splicing conditions; The coupling spectrum parameter generation module is used to convert the shielded temperature control coupling calibration data into the inter-box shielded airflow coupling topology, leakage influence coefficient, and leakage sensitive frequency band set; The target boundary delineation module is used to identify the target shielding boundary, determine the scope of shielding risk impact, and calculate the leakage contribution value; The Yuanqiang silent frequency avoidance module is used to form an electromagnetic silence band based on the leakage contribution value, and to filter the spectrum avoidance operating frequency set based on the leakage sensitive frequency band set in order to control the operation of the variable frequency temperature control equipment. The screen effect retest and recovery module is used to perform a stable window retest after the silent action and spectrum avoidance action are completed, and generate access control commands, ventilation control commands, interface maintenance license commands, shielding maintenance alarms or control results to restore normal operation based on the retest results.

[0008] Furthermore, the containerized data center is formed by splicing two or more containers. The shielding boundary includes a shielding door, a ventilation duct, a cable interface, and a container connection. The container connection is a shielded connection position between adjacent containers for cables, air ducts, cooling pipes, or maintenance channels to pass through. In step S1, when the shielding door is closed, the interface maintenance status is set to unmaintained, the ventilation equipment is running stably, and the cabinet load is within the stable range allowed by the current business, the controlled response sample is collected for each container. Door actions, interface disassembly and assembly, fire alarms, or sensor over-limit segments are excluded from the shielding temperature control coupling calibration data.

[0009] Furthermore, in step S2, when generating the inter-box shielded airflow coupling topology, the boundary coupling strength is determined based on the electromagnetic leakage propagation strength and the pressure difference disturbance propagation strength between the disturbed shielding boundary and the affected shielding boundary. After removing natural fluctuations using the natural coupling background value obtained from the empty disturbance window, the corresponding coupling edges are retained to form the inter-box shielded airflow coupling topology.

[0010] Furthermore, in step S2, the leakage influence coefficient is obtained based on the change in the cabinet load source strength before and after the cabinet load disturbance, and the change in the leakage amplitude of the corresponding shielding boundary at the corresponding frequency point. It is used to characterize the cabinet's leakage response relationship to the shielding boundary at the corresponding frequency point; frequency points that do not obtain effective load change or effective leakage response are not included in the subsequent contribution calculation.

[0011] Furthermore, in steps S2 and S4, the candidate operating frequencies are the frequencies retained after removing the disabled frequencies and frequencies that cannot maintain the cold aisle temperature under the current temperature control conditions from the allowed operating frequencies of the variable frequency temperature control equipment. First, based on the remaining leakage margin of the shielding boundary and the leakage increment caused by the variable frequency temperature control equipment at the candidate operating frequencies, the leakage sensitive frequency band set is screened. Then, the spectral component set at the candidate operating frequencies is screened by distance with the leakage sensitive frequency band set to obtain the spectrum avoidance operating frequency set.

[0012] Furthermore, in step S3, when any of the following conditions are met—electromagnetic leakage sampling value reaching the early warning condition, a request to open the shielded door, a request for ventilation action, an application for interface maintenance, a change in the pressure difference of the enclosure reaching the pressure difference disturbance condition, or a risk transmitted from adjacent enclosures through the coupling topology of the shielded airflow between enclosures reaching the propagation condition—the corresponding shielded boundary enters the candidate set. When multiple shielded boundaries enter the candidate set simultaneously, the target shielded boundary is selected sequentially according to the remaining leakage margin, the influence range calculated by propagation, and the type of action to be performed.

[0013] Furthermore, in step S3, when determining the scope of the shielding risk impact, the propagation intensity is calculated based on the coupling propagation path in the coupling topology of the inter-box shielding airflow, starting from the target shielding boundary. The shielding boundary or box area whose propagation intensity meets the impact range threshold is included in the scope of the shielding risk impact. The target shielding boundary itself is included in the scope of the shielding risk impact by default.

[0014] Furthermore, in steps S3 and S4, the leakage contribution value is determined by the current load source strength of the cabinet, the leakage impact coefficient, the propagation correction coefficient, and the set of frequency points participating in the contribution calculation; when forming the electromagnetic silence zone, within the shielding risk influence range, cabinets that can perform silence actions are selected as cabinets to be silenced according to the leakage contribution value from high to low, and at least one silence action is performed on the cabinets to be silenced, including service load migration, server power limitation, processor frequency upper limit reduction, network port rate limitation, non-real-time task delay, or PDU tributary rate limiting.

[0015] Furthermore, in step S5, after the silencing action and spectrum avoidance action are completed, wait for a stable sampling window and re-collect electromagnetic leakage sampling data, cabinet pressure difference, cold aisle temperature, return air temperature, and cabinet load source strength within the target shielding boundary and its influence range; when the leakage at the target shielding boundary is lower than the permissible threshold, no new leakage gain peak appears in adjacent cabinets within the influence range, and the temperature control requirements are within the permissible range, generate access control commands, ventilation control commands, or interface maintenance permission commands; when the leakage at the target shielding boundary does not decrease, expand the set of cabinets to be silenced, increase the spectrum avoidance requirements, or output a shielding maintenance alarm; maintain a short-term retest state after the shielding door is closed, the ventilation action is completed, or the interface maintenance is completed; when the leakage at the target shielding boundary is no longer higher than the recovery threshold, the pressure difference within the influence range returns to the permissible range, and the cold aisle temperature and return air temperature do not show a continuous upward trend, resume normal operation.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. To address the difficulty in quantifying the coupling relationship between shielding boundaries in multi-chassis data centers, this invention obtains shielding temperature control coupling calibration data covering differential pressure disturbances, rack load disturbances, and frequency conversion disturbances, and transforms this data into an inter-chassis shielding airflow coupling topology, a leakage influence coefficient, and a set of leakage-sensitive frequency bands. Specifically, the inter-chassis shielding airflow coupling topology expresses the propagation relationship of electromagnetic leakage and differential pressure disturbances between shielding boundaries; the leakage influence coefficient characterizes the leakage response relationship of rack load source strength changes to the corresponding frequency points of the shielding boundaries; and the set of leakage-sensitive frequency bands constrains the operating spectrum of the frequency conversion temperature control equipment. This allows the correlation between shielding boundaries, rack load, and temperature control frequency to be transformed into subsequent operational control parameters, helping to improve the insufficient control basis when judging based solely on a single sample value or a single device status. 2. To address the difficulty in determining the affected area and main leakage sources of the target shielding boundary before door opening, ventilation, or interface maintenance, this invention identifies the target shielding boundary during operation and determines the shielding risk impact range based on the inter-cabinet shielding airflow coupling topology. Furthermore, it determines the leakage contribution value based on the current load source strength of the cabinet, the leakage impact coefficient, the propagation correction coefficient, and the set of frequency points involved in the contribution calculation. When forming an electromagnetic silence zone, cabinets capable of performing silence actions are selected as the cabinets to be silenced according to their leakage contribution values ​​from high to low. At least one silence action is performed on these cabinets, including service load migration, server power limiting, processor frequency upper limit reduction, network port rate limiting, non-real-time task delay, or PDU tributary current limiting. This approach ensures that the silence control object corresponds to the actual leakage contribution of the target shielding boundary, helping to improve the targeted nature of the linkage control before shielding boundary actions. 3. To address the issue that the operating spectrum of variable frequency temperature control equipment may affect the remaining leakage margin of the shielding boundary and the difficulty in timely confirmation of the status after action, this invention removes prohibited frequencies and frequencies that cannot maintain the cold aisle temperature under the current temperature control conditions from the allowed operating frequencies of the variable frequency temperature control equipment. It also combines a set of leakage-sensitive frequency bands to screen a set of frequency avoidance operating frequencies to control the operation of the variable frequency temperature control equipment. After the silent action and frequency avoidance action are completed, this invention re-collects electromagnetic leakage sampling data, cabinet pressure difference, cold aisle temperature, return air temperature, and cabinet load source strength within the target shielding boundary and its influence range through a stable sampling window. Based on the re-test results, it generates access control commands, ventilation control commands, interface maintenance permission commands, shielding maintenance alarms, or control results for restoring normal operation. This enables a closed-loop process for shielding action, temperature control frequency avoidance, and status restoration, which helps improve the verifiability of the linkage control process. Attached Figure Description

[0017] Figure 1 A flowchart of a method for linkage control of shielding effectiveness in a box-type data center; Figure 2is a flowchart of the steps for identifying a target shielding boundary and calculating leakage contribution according to the present invention; Figure 3 is a structural block diagram of a shielding efficiency linkage control system for a box-type data center. Detailed Description of the Preferred Embodiments

[0018] Embodiment 1, with reference to Figure 1 , this embodiment relates to a shielding efficiency linkage control method for a box-type data center, which is applicable to a data center formed by splicing two or more boxes. Each box is provided with a cabinet, a variable-frequency temperature control device, an air exchange channel, a shielding door, a cable interface and a dynamic environment acquisition unit, and an inter-box connection part is arranged between adjacent boxes; the inter-box connection part comprises at least one of a cable bridge, a splicing seam shielding connector, an operation and maintenance channel, an inter-box air duct connection section or a cooling pipeline penetration connection section.

[0019] The shielding door, the air exchange channel, the cable interface and the inter-box connection part are collectively referred to as shielding boundaries hereinafter. The controller is communicatively connected to the electromagnetic leakage sampling unit, the differential pressure sensor, the temperature and humidity sensor, the access controller, the interface maintenance detection unit, the cabinet load acquisition unit, the variable-frequency temperature control device and the power distribution control unit respectively. The electromagnetic leakage sampling unit is arranged on the inner side, the outer side or the adjacent area of the shielding boundary, and can adopt a near-field probe, a field strength sampling module or a spectrum sampling module. The cabinet load acquisition unit reads one or more of PDU branch current, server power consumption, virtualization platform task volume and network port activity. The method specifically includes the following steps: Step S1: Obtain shielding and temperature control coupling calibration data.

[0020] First, obtain controlled response samples in the multi-box splicing state, where the response samples cover differential pressure disturbance, cabinet load disturbance and frequency conversion disturbance, and exclude segments of door movement, interface disassembly and assembly, fire alarm and sensor out-of-limit.

[0021] S11: Adjust each box to a reference operation state: The shielding door is kept closed, the interface maintenance state is set to non-maintenance, the air exchange device is kept at a stable rotation speed, and the cabinet load is kept in a stable range allowed by the current service. The reference operation state lasts until the electromagnetic leakage sampling value of each shielding boundary, the box differential pressure and the return air temperature have no continuous rising trend within a continuous sampling window. The length of the continuous sampling window is selected according to the electromagnetic leakage sampling period, the differential pressure sampling period and the adjustment holding time of the variable-frequency temperature control device, so that the window at least contains one complete electromagnetic leakage spectrum sampling.

[0022] S12: Perform differential pressure disturbance calibration: Select one shielding boundary Within the enclosure, controlled changes in the pressure difference between the inside and outside of the enclosure are achieved by adjusting the fan speed, damper opening, or return air ratio. The range of pressure difference variation is selected based on the current cold aisle temperature margin and fan adjustability, ensuring that the cabinet inlet temperature remains within the allowable range during disturbances. Once the fan speed or damper opening stabilizes, the shielding boundary is measured. and the shielding boundary of adjacent enclosures The electromagnetic leakage change and differential pressure change. The segment that maintains the same sampling window without applying differential pressure disturbance is called the empty disturbance window. The empty disturbance window is used to identify sampling noise and the upper edge of natural fluctuations.

[0023] S13. Perform rack load disturbance calibration: Select rack The load is switched from the baseline load to the calibration load. The calibration load can be achieved through test task deployment, virtual machine migration, power limit adjustment, or port flow control. During each load disturbance, data is simultaneously collected from each shield boundary at multiple frequency points. Electromagnetic leakage amplitude at the location If a shielding door is open, an interface is under maintenance, there is strong external interference, or a sensor is offline within the sampling window, that window will not participate in subsequent calculations. If the change in cabinet load does not exceed the effective resolution capability of the load acquisition unit, the load disturbance sample will be discarded.

[0024] S14. Perform variable frequency disturbance calibration. This involves sequentially operating the variable frequency compressor, variable frequency fan, or variable frequency water pump at the candidate operating frequencies. Candidate running frequency From frequency set Select from the options. Frequency gather The following steps are used to obtain the minimum and maximum operating frequencies, the minimum settable frequency step size of the controller, and the disabled frequencies of the variable frequency temperature control equipment: Read the minimum and maximum allowed operating frequencies of the variable frequency temperature control equipment; enumerate from the minimum operating frequency to the maximum operating frequency according to the minimum settable frequency step size; remove the disabled frequencies and frequencies that cannot maintain the cold aisle temperature under the current temperature control conditions, and retain the frequencies that constitute the remaining frequency composition. Each candidate operating frequency is maintained until the electromagnetic leakage sampling enters a stable window, at which point the leakage spectrum at the shield boundary is acquired.

[0025] Step S2: Generate linkage control parameters.

[0026] The response samples obtained from S1 are converted into operating control parameters. The propagation relationship between enclosures, the leakage contribution relationship of the cabinet, and the frequency band sensitive to the frequency converter are all extracted from the controlled disturbance response and locally updated after equipment maintenance or enclosure expansion.

[0027] S21. Calculate the airflow coupling coefficient between the enclosures: For the disturbed shielding boundary and the affected shielding boundary Calculate the electromagnetic leakage propagation intensity and the pressure difference disturbance propagation intensity separately, and then take the larger of the two values ​​as the boundary coupling intensity: in, Indicates the shielding boundary For shielding boundary The intensity of electromagnetic leakage propagation; Indicates the shielding boundary For shielding boundary The intensity of pressure difference disturbance propagation; Indicates the shielding boundary For shielding boundary The coupling strength; Indicates the shielding boundary When a pressure differential disturbance is applied to the enclosure, the shielding boundary The average absolute change in electromagnetic leakage within the stability window; Indicates the shielding boundary under the same disturbance The mean absolute change in electromagnetic leakage; Indicates the shielding boundary under the same disturbance The average absolute change in pressure difference; Indicates the shielding boundary under the same disturbance The average absolute change in pressure difference.

[0028] , , and The calculation method is as follows: first, obtain the average value of the corresponding measurement points within the reference window before the disturbance; then, obtain the sampled values ​​of the corresponding measurement points within the stable window after the disturbance; and finally, average the absolute values ​​of the differences between each sampled value within the stable window and the average value of the reference window. If... If the change in electromagnetic leakage is below the lower limit of the effective change obtained from the empty disturbance window, then Not included in this coupling strength calculation; if If the effective change in pressure difference is below the lower limit obtained from the empty disturbance window, then If neither is included in the current coupling strength calculation, then the perturbation sample is discarded. and When both can be calculated, Take the larger of the two; when only one of them can be calculated, Use this computable term.

[0029] The empty disturbance window was calculated in the same way. As a natural coupling background value, the actual pressure difference disturbance sample Preserve when the value is above the upper edge of the natural coupling background value. and The coupling edges form a shielded airflow coupling topology between the boxes.

[0030] S22. Calculate the leakage impact coefficient: For server racks Shielding Boundaries and frequency First, calculate the load disturbance response. Then calculate the leakage impact factor. : in, Indicates server rack The change in unit load source strength at the shield boundary frequency The leakage response caused by the location; Indicates server rack For shielding boundary The leakage impact coefficient; Indicates the first Secondary effective load disturbance calibration; Indicates the first Second pair of cabinets After applying load disturbance, the shield boundary At frequency The leakage amplitude; Indicates the shielding boundary before the same disturbance. At frequency The baseline leakage amplitude; Indicates the cabinet after the disturbance The load source is strong; The cabinet before the disturbance The load source is strong; This refers to the set of racks participating in the calibration; express Any rack in the system.

[0031] like Samples below the effective change limit of the load acquisition unit are not included in the median calculation. If the corresponding leakage response is below the upper edge of the electromagnetic leakage sampling noise, then this frequency point is not included in the calculation of the leakage influence coefficient. When the frequency point... corresponding If a frequency point cannot be obtained through valid samples, it will not be included in subsequent steps. The selection range; if all candidate frequency points of the target shielding boundary lack effective If so, the local load disturbance calibration of the corresponding cabinet and target shielding boundary will be re-executed.

[0032] Rack load power The value is between 0 and 1. When obtaining the PDU branch current, the current load component is obtained by dividing the current current by the rated current; when obtaining the server power consumption, the power consumption component is obtained by dividing the current power consumption by the rated power consumption; when obtaining the network port activity, the network load component is obtained by dividing the current port activity by the port's rated throughput. If multiple valid components exist, the arithmetic mean of the valid components is taken; if only one valid component exists, that component is directly used as the load component. Components greater than 1 are counted as 1 in the calculation, and invalid samples less than 0 are discarded.

[0033] S23. Determine the leakage-sensitive frequency band: For shielding boundaries First, a set of frequency points that can be covered by the spectral components of the variable frequency temperature control equipment is formed. The specific processing involves: based on the candidate operating frequency set... List the frequency points that may be related to the operation of the variable frequency temperature control equipment, including the equipment's operating base frequency, the carrier frequency fed back by the controller, detectable harmonic frequencies, and the electromagnetic leakage sampling bandwidth. Frequency points within the sampling bandwidth that will not be swept by the equipment's operating base frequency, carrier frequency, or detectable harmonics will not be included in the leakage-sensitive frequency band screening. For the reserved frequency points... Calculate the remaining leakage margin And screen the set of leakage-sensitive frequency bands. : in, Indicates the shielding boundary At frequency The remaining leakage margin; Indicates the shielding boundary At frequency Permissible leakage limits; Indicates the shielding boundary under the reference operating state At frequency The leakage amplitude; Indicates the shielding boundary The set of leakage-sensitive frequency bands; This indicates that the variable frequency temperature control equipment is operating at the candidate operating frequency. At that time, shield the boundary At frequency The average absolute increment of the leakage amplitude relative to the reference spectrum; Indicates the shielding boundary At frequency The effective margin lower limit; Represents the set of candidate running frequencies; Indicates the candidate running frequency; This indicates the threshold for determining sensitive frequency bands. In the above filtering relationships, only [the threshold is specified]. Time calculation ;when At that time, the corresponding frequency point is directly included. .

[0034] The calculation method is as follows: when the variable frequency temperature control equipment is operating at the candidate operating frequency Furthermore, after entering the stable window, the shielding boundary is obtained. At frequency The linear leakage amplitude is calculated; then, a reference spectrum is obtained under the same load, access control status, interface maintenance status, and similar differential pressure conditions; the absolute value of the difference between the leakage amplitude within the stable window and the amplitude at the corresponding frequency point of the reference spectrum is taken and averaged. If multiple stable windows exist under the same candidate operating frequency, the median of the calculation results for multiple windows is taken as the average. .

[0035] The generation process includes: calculating the frequency point within the empty perturbation window. The upper edge of the natural fluctuation of the leakage; reading the electromagnetic leakage sampling equipment at the frequency point The ability to distinguish between the two; take the larger of the two as the lower limit of the effective margin. (Generation) During the reference operating state, the upper edge of the natural leakage gain at each frequency point is read. The upper edge of the natural leakage gain is obtained by the ratio of the natural leakage fluctuation within the empty disturbance window to the corresponding remaining leakage margin. Then, the allowable gain threshold is calculated according to the warning margin in the project shielding acceptance document. The more stringent value between the upper edge of the natural leakage gain and the allowable gain threshold is taken as the allowable gain threshold. .like The remaining leakage margin at this frequency is insufficient to support stable calculations, and it is directly included. .

[0036] S24. Limiting the timing of parameter updates: After replacing the shielding door seals, adjusting the cabinet connections, adding cabinets, changing the duct structure, or maintaining the frequency converter temperature control equipment, re-perform the local calibration related to the affected boundary. During periods of normal business fluctuations, use the most recent valid calibration results and correct the scope of shielding risk impact during the retesting process.

[0037] Step S3: Identify the target shielding boundary and calculate the leakage contribution.

[0038] like Figure 2 As shown, during operation, leakage, differential pressure, temperature and humidity, access control, interface maintenance, load and frequency conversion are aligned according to a unified time window. Then, the shielding boundary that needs to be prioritized for protection is identified, and the leakage contribution of each cabinet to the boundary is calculated.

[0039] S31. Identify the masking boundary of candidate targets: A shielded boundary is added to the candidate set when any of the following conditions are met: electromagnetic leakage sampling value reaches the warning condition; there is a request to open the shielded door; there is a request for ventilation; there is an interface maintenance request; the pressure difference change in the enclosure reaches the pressure difference disturbance condition; the risk transmitted from adjacent enclosures through the coupling topology of the shielded airflow between enclosures reaches the propagation condition. If multiple boundaries are added to the candidate set simultaneously, the target shielded boundary is selected in the following order. First, compare the remaining leakage margins of each boundary, and prioritize the boundary with the smaller remaining leakage margin; if the remaining leakage margins are equal, compare the influence ranges calculated by propagation, and prioritize the boundary with the larger influence range; if they still cannot be distinguished, door opening or interface maintenance actions take precedence over ordinary ventilation actions.

[0040] S32. Determine the scope of impact of shielding risks: Based on the airflow coupling topology between the enclosures, the coupling edge strength is first limited, and then the target shielding boundary is calculated. For other shielding boundaries or enclosure areas The intensity of transmission and the range of influence. : in, This represents the coupling edge strength used in path propagation calculations; This represents the original coupling strength obtained from the aforementioned calculation; Indicates the target shielding boundary The scope of the shielding risk impact; This indicates that the target's shielding boundary is included in the scope of influence by default; Indicates the potentially affected shielding boundary or enclosure area; Indicates from arrive The set of coupled propagation paths; This indicates one of the transmission paths; Representing a path Coupled edges on; This indicates the threshold of the scope of influence.

[0041] and The correspondence is as follows: when the coupling edge Connect shield boundary and shielding boundary hour, Using the boundary relationship corresponding to . right An upper limit constraint is applied to keep the propagation strength of subsequent paths within a comparable range. If Empty indicates the target shielding boundary. With the region There are no available coupling propagation paths between them, and the region Not included .

[0042] generate First, the upper edge of the propagation intensity between each non-disturbance boundary is calculated within the empty disturbance window, and this upper edge is used as the benchmark for eliminating propagation misjudgments. Subsequently, during commissioning, a controlled differential pressure disturbance is applied to the connection between the enclosures, and the propagation intensity corresponding to when adjacent enclosures begin to show a stable and reproducible leakage response is recorded. This propagation intensity is used as the engineering benchmark for determining the scope of influence. If an adjacent enclosure does not experience local leakage exceeding the limit, but meets the aforementioned scope of influence screening conditions, the adjacent enclosure is included in subsequent silent and temperature-controlled spectrum avoidance control.

[0043] S33. Calculate the leakage contribution value: For those in cabinets inside First, set the frequency point set. .when When not empty, let use ;when When empty, mask the boundary according to the target. The remaining leakage margins are sorted from smallest to largest, and one or more frequency points that are stable in sampling and within the shielding acceptance range are selected as... Then the propagation correction coefficient was calculated. and leakage contribution value : in, Indicates server rack To the target shield boundary The propagation correction coefficient; Indicates server rack From the enclosure area to the target shielding boundary The set of propagation paths; Indicates the coupling edge in the path The coupling strength after limiting; Indicates server rack Target shielding boundary The leakage contribution value; This indicates the current load source strength of the server rack; This represents the set of frequency points that participate in the contribution calculation; Indicates server rack For shielding boundary At frequency The leakage impact coefficient. If multiple propagation paths exist, the path with the highest propagation intensity is used; if the cabinet is not connected to the target shielding boundary, the cabinet does not participate. calculate.

[0044] server rack With the target shielding boundary When located in the same enclosure, the impact of cabinet location, cable routing, and shielding boundary distance on leakage response is already evident. Therefore Take 1; during cross-box propagation, Used to compensate for propagation attenuation caused by coupling edges between boxes.

[0045] Step S4: Form an electromagnetic silence zone and perform spectrum avoidance temperature control.

[0046] Before the target shield boundary is opened, ventilated, or maintained, the leakage contribution within its influence range is reduced. The temperature control equipment then operates at a candidate frequency that meets the thermal requirements and avoids the sensitive frequency band of the target boundary.

[0047] S41. Select the rack to be silent: Scope of impact The internal cabinets are arranged according to Arrange the racks from highest to lowest priority, and select those capable of performing silent actions in that order. Silent actions include workload migration, server power limiting, processor frequency cap reduction, network port rate limiting, non-real-time task delay, and PDU tributary rate limiting. The racks to be silent should satisfy the following formula: in, Indicates being within the scope of influence The collection of server racks inside; Indicates server rack The percentage reduction in leakage contribution after performing a silent action, ranging from 0 to 1; This indicates the electromagnetic silence threshold. The formation process is as follows: first obtain the location located at Within the enclosure area, the actual rack number deployed within that area is read; if a rack spans multiple enclosure areas, it is assigned to the corresponding area based on the side with stronger coupling to the target shielding boundary among its power input location, cable outlet location, and air duct location.

[0048] The generation process includes: reading the data before the silent action is executed. After performing migration, frequency limiting, speed limiting, or rate limiting actions, wait for the rack power consumption or port activity to enter a stable window before reading the data after the action. twice The percentage decrease as In the pre-selection phase before the action is executed, the current portable task volume, power limit range, or PDU current limit range are estimated. After the action is completed, the measured value will overwrite the estimated value. For racks that are not selected or cannot be silenced, their... Set to 0. If measured after a silent action... If it does not decrease or increases, then Set to 0; if the calculated decrease rate exceeds 1, then use 1 in the calculation.

[0049] The generation process includes: during the commissioning and debugging phase, selecting the target shielding boundary. Record the different rack load combinations. Leakage amplitude relative to the target shield boundary; select the corresponding record from those records where the leakage amplitude is below the permissible threshold. The upper edge serves as the baseline for determining silence. When the action to be performed is opening a door or interface maintenance, a stricter allowance is added to this baseline. When the action to be performed is normal ventilation, the allowance corresponding to normal ventilation is used. The allowance is derived from the project shielding acceptance documents, access control security level, and interface maintenance procedures.

[0050] S42, Issue a silent action: For migrateable services, first migrate tasks with lower real-time requirements or those that can be interrupted to racks outside the affected area; for non-migrateable services, reduce the processor frequency limit of the corresponding rack, limit network port speed, or reduce the power supply limit of the PDU tributary. After the silent actions are executed, continue collecting data from each rack within the affected area. And the leakage amplitude at the target shield boundary. If the remaining leakage contribution meets the electromagnetic silence threshold requirement, access control permission, ventilation permission, or interface maintenance permission will be determined; if the remaining leakage contribution does not meet the electromagnetic silence threshold requirement and the corresponding action is not an emergency action, the action will be suspended and the leakage contribution of the silenceable cabinet will continue to be reduced.

[0051] S43. Generate a set of frequency frequencies for spectrum avoidance: For candidate running frequency First, list the set of spectral components that the variable frequency temperature control device may produce at this operating frequency. . This includes the device's operating base frequency, the carrier frequency fed back by the controller, and detectable harmonic frequencies within the sampling bandwidth. Detectable harmonic frequencies are listed sequentially as integer multiples of the operating base frequency, up to and including frequencies exceeding the electromagnetic leakage sampling bandwidth. If the device controller can directly output the carrier frequency and its sideband frequencies, then these frequencies are incorporated into the sampling bandwidth. If the device controller does not provide feedback on the carrier frequency or sideband frequency, then At least includes the operating base frequency And its detectable integer multiples of frequencies within the electromagnetic leakage sampling bandwidth. Then, the target shielding boundary is screened. The corresponding set of frequency ranges for spectrum avoidance. : in, Indicates the target shielding boundary The corresponding set of frequency ranges for spectrum avoidance; Represents the set of candidate running frequencies; Indicates the target shielding boundary The set of leakage-sensitive frequency bands; Indicates the candidate running frequency; Indicates candidate running frequency The set of spectral components below; express Any spectral component in; express Any frequency point in; Indicates the spectral proximity width; This represents the spectral distance threshold.

[0052] generate At that time, the frequency resolution of the electromagnetic leakage sampling, the upper edge of the steady-state frequency fluctuation of the frequency converter, and the upper edge of the harmonic broadening are read, and the larger of these values ​​is taken as the spectral proximity width. (Generation) During frequency disturbance calibration, the spectral distance and corresponding leakage gain at different candidate operating frequencies are recorded; the lower edge of the spectral distance that does not cause reproducible leakage gain is used as the screening criterion. An empty value indicates that no sensitive frequency points that need to be avoided have been screened out at the target shielding boundary. Directly adopt .

[0053] like Not empty, variable frequency temperature control equipment from Select the operating frequency that meets the temperature control requirements and has a small frequency variation range. If If the range is empty, first expand the electromagnetic silence zone or call up the non-frequency conversion cooling branch; if the temperature control requirements still cannot be met, select the candidate operating frequency that is furthest from the leakage-sensitive frequency band, and simultaneously increase the shielding alarm level. The candidate operating frequency that is furthest from the leakage-sensitive frequency band is selected from the candidate operating frequency set according to the aforementioned minimum distance term. Obtained by sorting in the middle.

[0054] Step S5: Retest the scope of the shielding risk and restore the operating status.

[0055] After the silent action and spectrum avoidance action are completed, continue to retest the target boundary and affected enclosures. If the retest is qualified, the silent action will be lifted; if the retest is not qualified, the affected area will be expanded or a maintenance alarm will be output.

[0056] S51. Perform a stable window retest: After load migration, load limiting, power supply overload, or execution of control commands from the variable frequency temperature control equipment, a stable sampling window is awaited. The stable sampling window is set according to the enclosure volume, air duct time constant, variable frequency temperature control equipment adjustment and holding time, and electromagnetic leakage sampling cycle. Within the window, the target shielding boundary is re-sampled. and scope of impact Electromagnetic leakage sampling data at each measuring point inside the enclosure, differential pressure within the enclosure, cold aisle temperature, return air temperature, and rack load source strength.

[0057] S52, Generate license, alarm, or recovery commands: If the leakage at the target shield boundary is below the permissible threshold, no new leakage gain peaks appear in adjacent enclosures within the affected area, and temperature control requirements are within the permissible range, generate access control commands, ventilation control commands, or interface maintenance permission commands. If the leakage at the target shield boundary does not decrease, continue to expand the collection of cabinets awaiting silencing, increase spectrum avoidance requirements, or output shield maintenance alarms. If the leakage at the target shield boundary decreases but the leakage in adjacent enclosures increases, recalculate. The newly added boundaries will be included in the next control cycle.

[0058] S53. Gradually resume normal operations: After the shielded doors are closed, ventilation is completed, or interface maintenance is finished, maintain a short-term retest status. The silent cabinet should gradually resume load according to service priority, while the frequency converter temperature control equipment should continue to be powered. Limitations. After continuous retesting results meet the recovery conditions, the electromagnetic silence zone is lifted, and regular temperature control is restored. Recovery conditions include: the leakage at the target shield boundary no longer exceeding the recovery threshold, the pressure difference within the affected area returning to the allowable range, and the cold aisle temperature and return air temperature not showing a continuous upward trend.

[0059] Example 2, refer to Figure 3 This embodiment of a box-type data center shielding effectiveness linkage control system includes a shielding temperature disturbance calibration module, a coupling spectrum parameter generation module, a target boundary delineation module, a source strength silent frequency avoidance module, and a shielding effectiveness retest and recovery module. The shielding temperature represents the correlation between the shielding boundary leakage state and the temperature control operating conditions.

[0060] The screen temperature disturbance calibration module is responsible for calibration data acquisition in the case of multiple cabinets spliced ​​together. The data it acquires includes electromagnetic leakage amplitude at the shielding boundary, cabinet pressure difference, cabinet load source strength, frequency of variable frequency temperature control equipment, access control status, interface maintenance status, and environmental parameters.

[0061] Before commissioning, after maintenance, or within an operating window with minimal business disturbances, the screen temperature disturbance calibration module records response data under the baseline operating state, differential pressure disturbance state, cabinet load disturbance state, and frequency converter disturbance state. Sampling segments with instances of shielded door opening, interface disassembly / reassembly, strong external interference, sensor disconnection, or load changes that fail to achieve effective resolution are marked as invalid segments, ensuring that subsequent calculations use stable and reproducible disturbance responses.

[0062] The coupling spectrum parameter generation module is responsible for generating the coupling relationships between enclosures, the impact of cabinet leakage, and the frequency bands sensitive to frequency conversion. Based on the controlled disturbance response obtained by the screen temperature disturbance calibration module, it forms the shielded airflow coupling topology between enclosures, the leakage impact coefficient, the set of leakage sensitive frequency bands, and the set of candidate operating frequencies.

[0063] When generating the airflow coupling topology between enclosures, the coupling spectrum parameter generation module calculates the electromagnetic leakage propagation intensity and pressure difference disturbance propagation intensity between the shielding boundaries, and establishes corresponding boundary relationships when at least one propagation intensity is effective. Natural fluctuation responses within the empty disturbance window are discarded as background responses, and the remaining coupling relationships reflect the actual propagation relationships caused by enclosure connections, ventilation ducts, cable trays, or splicing connections. When generating the leakage influence coefficient, the coupling spectrum parameter generation module determines the leakage contribution capability of each cabinet to different shielding boundaries and different frequency points based on the changes in load source strength and shielding boundary leakage amplitude before and after cabinet load disturbance. Frequency points where effective load changes or effective leakage responses cannot be obtained are not included in subsequent contribution calculations. When generating the leakage-sensitive frequency band set, the coupling spectrum parameter generation module first compares the baseline leakage amplitude of the shielding boundary with the allowable leakage limit to obtain the remaining leakage margin; then, it combines this with the leakage amplitude increment caused by the variable frequency temperature control equipment at the candidate operating frequency to screen for frequencies that need to be avoided. Frequency points where the remaining leakage margin is insufficient for stable calculation are directly included in the leakage-sensitive frequency band set.

[0064] The target boundary delineation module is responsible for identifying target shielding boundaries and defining the scope of shielding risk impact. Based on electromagnetic leakage sampling values, access control requests, ventilation requests, interface maintenance requests, changes in enclosure pressure difference, and inter-enclosure coupling propagation results during operation, it delineates the target shielding boundaries that require priority handling.

[0065] When multiple shielding boundaries simultaneously meet the candidate criteria, the target boundary delineation module determines the target shielding boundary based on the remaining leakage margin, the propagation impact range, and the type of action to be executed. Boundaries with smaller remaining leakage margins, larger impact ranges, or those involving door openings and interface maintenance are prioritized for subsequent linkage control processes. The target boundary delineation module also calculates the shielding risk impact range of the target shielding boundary based on the inter-enclosure shielding airflow coupling topology. The target shielding boundary itself is included in this impact range by default; whether adjacent enclosures, inter-enclosure connections, or other shielding boundaries are included is determined by the propagation strength of the coupling path.

[0066] The Yuanqiang Silent Frequency Avoidance Module is responsible for forming electromagnetic silence zones and avoiding frequency conversion temperature control spectrum. Based on the target shielding boundary and influence range determined by the target boundary delineation module, it calculates the leakage contribution value of the cabinets within the influence range to the target shielding boundary and selects the cabinets to be silenced.

[0067] Cabinets to be silenced are selected from highest to lowest based on their leakage contribution value. Executable silencing actions include load migration, server power limiting, processor frequency cap reduction, network port rate limiting, non-real-time task delay, and PDU branch rate limiting. After a silencing action is executed, the Yuanqiang Silencing Frequency Avoidance Module continues to read the cabinet load source strength and adjusts the actual contribution reduction ratio of the silencing action based on the changes in load source strength before and after execution. Regarding temperature control, the Yuanqiang Silencing Frequency Avoidance Module filters the set of frequency avoidance operating frequencies for variable frequency temperature control equipment based on the set of leakage-sensitive frequency bands at the target shielding boundary. If available frequencies exist, the operating frequency that meets temperature control requirements and has minimal frequency change is selected from the available frequencies; if no available frequencies exist, the electromagnetic silence band range is expanded first, or non-variable frequency cooling branches are called. If temperature control safety still cannot be maintained, candidate operating frequencies that are far from the leakage-sensitive frequency bands are selected, and the shielding alarm level is increased.

[0068] The shielding effect retest and recovery module is responsible for retesting, authorization, alarming, and recovery after linkage control. After the execution of silent action, load limit, power supply limit, or frequency converter temperature control command, the shielding effect retest and recovery module waits for a stable sampling window and rereads the electromagnetic leakage sampling data, cabinet pressure difference, cold aisle temperature, return air temperature, and cabinet load source strength of the target shielding boundary and its influence range.

[0069] When the leakage at the target shield boundary is below the permissible threshold, no new leakage gain peaks appear in adjacent enclosures, and the temperature control requirements are within the permissible range, the shield effectiveness retest and recovery module generates access control commands, ventilation control commands, or interface maintenance permission commands. When the leakage at the target shield boundary does not decrease, the shield effectiveness retest and recovery module triggers an expansion of the silence range, increases spectrum avoidance requirements, or outputs a shield maintenance alarm. When the leakage at the target shield boundary decreases but the leakage in adjacent enclosures increases, the shield effectiveness retest and recovery module redefines the shielding risk impact range and includes the newly added boundary in the next control cycle. After the shielding door is closed, ventilation is completed, or interface maintenance is completed, the shield effectiveness retest and recovery module maintains a short-term retest state. Once the continuous retest results meet the recovery conditions, the electromagnetic silence zone is gradually released, allowing the cabinet load and frequency converter temperature control equipment to resume normal operation.

[0070] Through the detailed description of the above embodiments, the present invention provides a shielding effectiveness linkage control method and system for a box-type data center. Taking the shielding boundary in a multi-box splicing state as the control object, it incorporates shielding doors, ventilation ducts, cable interfaces, and inter-box connections into a unified shielding risk identification range. Shielding temperature control coupling calibration data is obtained through differential pressure disturbances, cabinet load disturbances, and frequency converter disturbances. This method further transforms the calibration data into an inter-box shielding airflow coupling topology, leakage influence coefficient, and a set of leakage-sensitive frequency bands. This allows for the delineation of the shielding risk impact range based on the target shielding boundary during operation, and the calculation of the leakage contribution value of the cabinets within the impact range to the target shielding boundary. Before opening doors, ventilating, or maintaining interfaces at the shielding boundary, the present invention forms an electromagnetic silence zone based on the leakage contribution value and, in conjunction with the set of leakage-sensitive frequency bands, filters a set of frequency avoidance operating frequencies to coordinate cabinet load control and the operation of frequency converter temperature control equipment. Subsequently, the leakage, differential pressure, and temperature control status are retested through a stable window to determine whether they meet the corresponding conditions, and the control results of permission, alarm, or restoration to normal operation are output, thus forming a shielding effectiveness linkage control process consisting of calibration, identification, silencing, frequency avoidance, retesting, and restoration.

[0071] The preset parameters in the above formulas shall be set by those skilled in the art according to the actual situation.

[0072] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0073] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0074] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0075] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0076] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0077] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0078] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for linkage control of shielding effectiveness in a box-type data center, characterized in that, The method flow is as follows: S1, Obtain the shielded temperature control coupling calibration data under the multi-box splicing state. The calibration data is obtained from the controlled response samples of the covering pressure difference disturbance, cabinet load disturbance and frequency conversion disturbance. S2, convert the shielded temperature control coupling calibration data into linkage control parameters, the linkage control parameters including the inter-box shielded airflow coupling topology, leakage influence coefficient and leakage sensitive frequency band set; S3. During operation, identify the target shielding boundary, determine the shielding risk impact range based on the shielding airflow coupling topology between the enclosures, and calculate the leakage contribution value of the cabinets within the shielding risk impact range to the target shielding boundary. S4. Before opening the door, ventilating, or maintaining the interface at the target shielding boundary, select the cabinet to be silenced to form an electromagnetic silence zone based on the leakage contribution value, and filter the spectrum avoidance operating frequency set based on the leakage sensitive frequency band set to control the operation of the variable frequency temperature control equipment. S5 performs a stable window retest after the silent action and spectrum avoidance action are completed. Based on the retest results, it generates access control commands, ventilation control commands, interface maintenance permission commands, shielding maintenance alarms, or control results to restore normal operation.

2. The method for linkage control of shielding effectiveness in a box-type data center according to claim 1, characterized in that, The containerized data center is formed by splicing two or more containers. The shielding boundary includes a shielding door, a ventilation duct, a cable interface, and a connection between containers. The connection between containers is a shielded connection position between adjacent containers for cables, air ducts, cooling pipes, or maintenance channels to pass through. In step S1, when the shielding door is closed, the interface maintenance status is set to unmaintained, the ventilation equipment is running stably, and the cabinet load is within the stable range allowed by the current business, the controlled response sample is collected, and door actions, interface disassembly and assembly, fire alarms, or sensor over-limit segments are excluded from the shielding temperature control coupling calibration data.

3. The method for linkage control of shielding effectiveness in a box-type data center according to claim 2, characterized in that, In step S2, when generating the inter-box shielded airflow coupling topology, the boundary coupling strength is determined based on the electromagnetic leakage propagation strength and the pressure difference disturbance propagation strength between the disturbed shield boundary and the affected shield boundary. After removing natural fluctuations using the natural coupling background value obtained from the empty disturbance window, the corresponding coupling edges are retained to form the inter-box shielded airflow coupling topology.

4. The method for linkage control of shielding effectiveness in a box-type data center according to claim 3, characterized in that, In step S2, the leakage influence coefficient is obtained based on the change in the load source strength of the cabinet before and after the cabinet load disturbance, and the change in the leakage amplitude of the corresponding shielding boundary at the corresponding frequency point. It is used to characterize the cabinet's response to leakage at the corresponding frequency point of the shielding boundary. Frequency points for which no effective load change or effective leakage response is obtained are not included in subsequent contribution calculations.

5. The method for linkage control of shielding effectiveness in a box-type data center according to claim 4, characterized in that, In steps S2 and S4, the candidate operating frequencies are the frequencies retained after removing the disabled frequencies and frequencies that cannot maintain the cold aisle temperature under the current temperature control conditions from the allowed operating frequencies of the variable frequency temperature control equipment. First, based on the remaining leakage margin of the shielding boundary and the leakage increment caused by the variable frequency temperature control equipment at the candidate operating frequencies, the leakage sensitive frequency band set is screened. Then, the spectral component set at the candidate operating frequencies is screened by distance with the leakage sensitive frequency band set to obtain the spectrum avoidance operating frequency set.

6. The method for linkage control of shielding effectiveness in a box-type data center according to claim 5, characterized in that, In step S3, when any of the following conditions are met, such as electromagnetic leakage sampling value reaching the early warning condition, a request to open the shielded door, a request for ventilation action, an application for interface maintenance, a change in the pressure difference of the enclosure reaching the pressure difference disturbance condition, or the risk transmitted from adjacent enclosures through the coupling topology of the shielded airflow between the enclosures reaching the propagation condition, the corresponding shielded boundary enters the candidate set; when multiple shielded boundaries enter the candidate set at the same time, the target shielded boundary is selected in sequence according to the remaining leakage margin, the influence range calculated by propagation, and the type of action to be performed.

7. The method for linkage control of shielding effectiveness in a box-type data center according to claim 6, characterized in that, In step S3, when determining the scope of the shielding risk impact, the target shielding boundary is taken as the starting point, and the propagation intensity is calculated according to the coupling propagation path in the coupling topology of the shielding airflow between the boxes. The shielding boundary or box area whose propagation intensity meets the impact range threshold is included in the scope of the shielding risk impact. The target shielding boundary itself is included in the scope of the shielding risk impact by default.

8. The method for linkage control of shielding effectiveness in a box-type data center according to claim 7, characterized in that, In steps S3 and S4, the leakage contribution value is determined by the current load source strength of the cabinet, the leakage impact coefficient, the propagation correction coefficient, and the set of frequency points involved in the contribution calculation; when forming the electromagnetic silence zone, within the shielding risk influence range, cabinets that can perform silence actions are selected as cabinets to be silenced according to the leakage contribution value from high to low, and at least one silence action is performed on the cabinets to be silenced, including service load migration, server power limitation, processor frequency upper limit reduction, network port rate limitation, non-real-time task delay, or PDU tributary rate limiting.

9. The method for linkage control of shielding effectiveness in a box-type data center according to claim 8, characterized in that, In step S5, after the silencing and spectrum avoidance actions are completed, wait for a stable sampling window and re-collect electromagnetic leakage sampling data, cabinet pressure difference, cold aisle temperature, return air temperature, and cabinet load source strength within the target shielding boundary and its influence range. When the leakage at the target shielding boundary is below the permissible threshold, no new leakage gain peak appears in adjacent cabinets within the influence range, and the temperature control requirements are within the permissible range, generate access control commands, ventilation control commands, or interface maintenance permission commands. When the leakage at the target shielding boundary does not decrease, expand the set of cabinets to be silenced, increase the spectrum avoidance requirements, or output a shielding maintenance alarm. Maintain a short-term retest state after the shielding door is closed, the ventilation action is completed, or the interface maintenance is completed. When the leakage at the target shielding boundary is no longer higher than the recovery threshold, the pressure difference within the influence range returns to the permissible range, and the cold aisle temperature and return air temperature do not show a continuous upward trend, resume normal operation.

10. A shielding effectiveness linkage control system for a box-type data center, used to implement the shielding effectiveness linkage control method for a box-type data center as described in any one of claims 1-9, characterized in that, The system includes: The screen temperature disturbance calibration module is used to obtain shielded temperature control coupling calibration data under multi-box splicing conditions; The coupling spectrum parameter generation module is used to convert the shielded temperature control coupling calibration data into the inter-box shielded airflow coupling topology, leakage influence coefficient, and leakage sensitive frequency band set; The target boundary delineation module is used to identify the target shielding boundary, determine the scope of shielding risk impact, and calculate the leakage contribution value; The Yuanqiang silent frequency avoidance module is used to form an electromagnetic silence band based on the leakage contribution value, and to filter the spectrum avoidance operating frequency set based on the leakage sensitive frequency band set in order to control the operation of the variable frequency temperature control equipment. The screen effect retest and recovery module is used to perform a stable window retest after the silent action and spectrum avoidance action are completed, and generate access control commands, ventilation control commands, interface maintenance license commands, shielding maintenance alarms or control results to restore normal operation based on the retest results.

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