Testing system and method for low-voltage power supply and distribution system of data center

Abstract

The invention discloses a testing system and method for a low-voltage power supply and distribution system of a data center, relates to the technical field of system testing, and solves the technical problems that some faults possibly occur in the operation process of the system, and when a protection module of the system is abnormal, the faults cannot be responded, and the operation safety of the system is influenced. The method comprises the following steps: collecting real-time environment data; acquiring real-time electric energy data of the low-voltage power supply and distribution system through a data sensor; adjusting the electric energy standard range of the low-voltage power supply and distribution system according to the real-time environment data; performance indexes of the low-voltage power supply and distribution system are tested according to the real-time electric energy data; obtaining a fault item of the low-voltage power supply and distribution system; performing fault simulation on the low-voltage power supply and distribution system by using the fault item to obtain a simulation result; adjusting the low-voltage power supply and distribution system according to a test result; optimizing the low-voltage power supply and distribution system according to a simulation result; and the test accuracy and the operation safety of the system can be guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of system testing, and relates to a testing technology for a low-voltage power supply and distribution system, and specifically to a testing system and method for a low-voltage power supply and distribution system in a data center. Background Art

[0002] A low-voltage power supply and distribution system usually refers to an electric power distribution and transmission system with a voltage level below 1 kilovolt; the low-voltage power supply and distribution system is responsible for safely and reliably distributing the electric energy transmitted from the high-voltage power grid to various electrical equipment and loads after reducing the voltage through a transformer; testing the low-voltage power supply and distribution system can promptly detect potential electrical safety hazards, thereby preventing accidents such as electrical fires and electric shocks; regular testing can promptly detect and repair equipment failures, avoid power outages caused by equipment failures, and thus improve power supply reliability; testing can ensure voltage stability and current balance, avoid problems such as overload and short circuit, and thus ensure the stability of power supply quality and good performance; stable power supply quality and timely fault handling can improve user satisfaction and trust, and enhance the user's power experience.

[0003] The prior art (the invention patent application with the publication number CN112345856A) discloses a method for testing a low-voltage power supply and distribution system in a data center, the method comprising: replacing IT equipment of the same power with a heater, using the heat generated by the heater after the circuit is connected to simulate the heat generated when the IT equipment is operated, dissipating the heat of the heater through a fan to simulate the local heat dissipation of the IT equipment itself, and replacing the IT equipment with a load for testing, thereby reducing the test cost and reducing the loss when a failure occurs; the air conditioner has the functions of cooling and dehumidification. When the voltage provided is insufficient, the cooling and dehumidification effects will be deteriorated. The cooling and dehumidification effects of the air conditioner are monitored in real time by setting a thermometer and a hygrometer in the room, the real-time power of the heater is detected by a power detector, and the measured data is compared with the preset data to obtain the result; the prior art tests IT equipment and air conditioners, and can be tested before formal power supply to ensure the stability of the low-voltage power supply and distribution system; however, some faults may occur in the low-voltage power supply and distribution system during operation. When the protection module of the system is abnormal, it will lead to failure to respond to the fault, affecting the safety of system operation.

[0004] The present invention provides a testing system and method for a low-voltage power supply and distribution system of a data center to solve the above technical problems. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes a testing system and method for a low-voltage power supply and distribution system in a data center, which is used to solve the problem of testing IT equipment and air conditioners in the prior art, and can be tested before formal power supply to ensure the stability of the low-voltage power supply and distribution system; however, some faults may occur in the low-voltage power supply and distribution system during operation. When an abnormality occurs in the protection module of the system, it will lead to the inability to respond to the fault, affecting the technical problem of the safety of system operation.

[0006] To achieve the above-mentioned object, a first aspect of the present invention provides a test system for a low-voltage power supply and distribution system in a data center, comprising: a power distribution test module, and a data acquisition module and a terminal processing module connected thereto;

[0007] Data acquisition module: used to collect real-time environmental data through environmental sensors; collect real-time power data of the low-voltage power supply and distribution system through data sensors; adjust the power standard range of the low-voltage power supply and distribution system according to the real-time environmental data;

[0008] Power distribution test module: used to test the performance indicators of the low-voltage power supply and distribution system according to real-time power data; obtain the fault items of the low-voltage power supply and distribution system; use the fault items to simulate the faults of the low-voltage power supply and distribution system and obtain the simulation results;

[0009] Terminal processing module: used to adjust the low-voltage power supply and distribution system according to the test results; optimize the low-voltage power supply and distribution system according to the simulation results.

[0010] Preferably, the adjusting the electric energy standard range of the low-voltage power supply and distribution system according to the real-time environmental data includes:

[0011] Retrieve real-time environmental data; obtain the environmental standard range; wherein the real-time environmental data includes real-time temperature and real-time humidity;

[0012] Determine whether the real-time environmental data are all within the environmental standard range; if yes, there is no need to adjust the electric energy standard range; if not, generate a standard adjustment signal to adjust the electric energy standard range.

[0013] It should be noted that the environmental standard range corresponds to the data type of the real-time environmental data, and the environmental standard range is set according to the equipment in the low-voltage power supply and distribution system.

[0014] Preferably, the generating of the standard adjustment signal to adjust the electric energy standard range includes:

[0015] Retrieve real-time environmental data; obtain optimal environmental data; wherein the optimal environmental data is the optimal temperature and optimal humidity of the system in operation;

[0016] The real-time temperature and real-time humidity in the real-time environmental data are marked as ST and SD respectively; the optimum temperature and optimum humidity in the optimum environmental data are marked as ZT and ZD respectively;

[0017] By formula Calculate the adjustment range of the electric energy standard; adjust the electric energy standard according to the adjustment range of the electric energy standard; wherein θ is a proportionality coefficient greater than 0.

[0018] It should be noted that the proportionality coefficient is set according to experiments. The greater the system is affected by the environment, the larger the value of θ is, and the value range is (0,100].

[0019] The present invention analyzes the real-time environment in which the low-voltage power supply and distribution system is located. Since the electric energy data of the low-voltage power supply and distribution system is related to the environment, the electric energy standard range is adjusted according to the environment, which can lay a foundation for subsequent testing of the low-voltage power supply and distribution system and is conducive to improving the accuracy of the test results.

[0020] Preferably, the testing of the performance indicators of the low-voltage power supply and distribution system according to the real-time electric energy data includes:

[0021] Retrieve real-time power data; the real-time power data includes: real-time current, real-time voltage and harmonic content; the harmonic content is obtained through analysis by a harmonic analyzer;

[0022] Determine whether the real-time power data are all within the power standard range; if yes, mark the test result as passed; if not, mark the real-time power data that exceeds the range and mark the test result as failed.

[0023] The present invention compares the real-time electric energy data with the electric energy standard range to determine whether the low-voltage power supply and distribution system has passed the test. It can detect problems existing in the system before the low-voltage power supply and distribution system is officially put into operation, which is beneficial to ensure the normal operation of the system.

[0024] Preferably, the harmonic content is obtained by analyzing with a harmonic analyzer, including:

[0025] Obtain a harmonic test point and set a harmonic analyzer on the harmonic test point; wherein the harmonic test point is set according to a load in a low-voltage power supply and distribution system;

[0026] Use a harmonic analyzer to collect the harmonic effective values ​​and fundamental effective values ​​at several harmonic test points; Calculate the voltage harmonic distortion; by formula Calculate the current harmonic distortion; calculate the harmonic content of the low-voltage power supply and distribution system using the weighted average method;

[0027] Where i represents the number of times the harmonic occurs, i = 1, 2…, n, n is a positive integer; U i represents the voltage effective value of the i-th harmonic; U represents the voltage effective value of the fundamental wave; I i represents the effective value of the current of the i-th harmonic; I represents the effective value of the current of the fundamental wave; the harmonic content includes the voltage harmonic content and the current harmonic content.

[0028] Preferably, the harmonic test points are set according to the load in the low-voltage power supply and distribution system, including:

[0029] Obtain a structural topology diagram of a low-voltage power supply and distribution system, convert the structural topology diagram into a single-line diagram, and mark the loads in the diagram to obtain marked nodes;

[0030] Obtain important data of several marked nodes; the important data include: the degree of harmonic influence and the number of faults; mark the degree of harmonic influence and the number of faults in the important data as XY and GC respectively; calculate the priority of the marked node by the formula YJ=α×lg(XY+1)+β×GC^2; α and β are proportional coefficients greater than 0;

[0031] According to the single-line diagram, the marked nodes on the same branch line are divided into the same test area, and the marked nodes with the highest priority are selected as the test points of the test area; the key points in the single-line diagram are obtained, and the key points and test points are marked as harmonic test points.

[0032] It should be noted that the key points include the secondary side of the transformer, distribution boards at all levels, and public connection points, etc. The key points can be dynamically adjusted according to the test conditions and requirements; at the same time, harmonic test points can be set at the monitoring port; the proportional coefficient is set according to expert evaluation, when the degree of harmonic influence is greater, α is greater, and the greater the number of faults, β is greater. In this embodiment, the degree of harmonic influence is obtained by formula It is calculated as follows: where H1 represents the amplitude of the fundamental wave, Hn represents the amplitude of the nth harmonic, and Σ represents the sum of all harmonics.

[0033] The present invention analyzes and labels nodes according to a structural topology diagram of a low-voltage power supply and distribution system, calculates the priority of the labeled nodes, selects the labeled nodes with the highest priority as test points in each branch line, and marks key points and test points as harmonic test points; and can select appropriate harmonic test points to detect harmonic content, which is beneficial to improving the accuracy of the analysis results.

[0034] Preferably, the method of using the fault item to simulate the low voltage power supply and distribution system to obtain the simulation result includes:

[0035] Retrieve the structural topology diagram of the low-voltage power supply and distribution system, and build a digital twin model using simulation software based on the structural topology diagram; set the initial operating state of the digital twin model;

[0036] Retrieve the fault project, set the fault data according to the fault project, introduce the fault data into the digital twin model, and determine whether the digital twin model performs the corresponding fault response. If yes, mark the simulation result as a successful fault simulation; if not, mark the simulation result as a failed fault simulation; wherein the fault data includes the fault type, fault location, fault time, and fault duration.

[0037] The present invention constructs a digital twin model based on the structural topology diagram of the low-voltage power supply and distribution system, and sets fault data according to the fault item; introduces the fault data into the digital twin model to simulate the fault; and can analyze the system's fault self-processing module, which is beneficial to ensure that the system turns on the protection mode when a fault occurs.

[0038] Preferably, adjusting the low voltage power supply and distribution system according to the test results includes:

[0039] Retrieve the test results to determine whether the test is passed; if yes, maintain the low-voltage power supply and distribution system; if no, analyze the reasons for the test failure;

[0040] Retrieve real-time electric energy data that is not within the electric energy standard range and obtain an adjustment processing library; match the real-time electric energy data with the adjustment processing library to obtain corresponding adjustment measures; and adjust the low-voltage power supply and distribution system according to the corresponding adjustment measures.

[0041] The present invention adjusts the low-voltage power supply and distribution system according to the test result; when the test result is not passed, the system is adjusted to ensure the normal operation of the system.

[0042] Preferably, the optimizing the low voltage power supply and distribution system according to the simulation results comprises:

[0043] Retrieve the simulation results and determine whether the fault simulation is successful; if yes, keep the low-voltage power supply and distribution system running; if no, analyze the reasons for the failure of the simulation results;

[0044] Retrieve the unresponsive fault items, and determine the corresponding low-voltage power supply and distribution system response module according to the fault items; generate a system optimization signal, and send the corresponding system response module to the technical processing personnel for system optimization.

[0045] The present invention optimizes the low-voltage power supply and distribution system according to the results of fault simulation. When the corresponding fault response module does not respond, the technician is notified to check and handle the module, which is beneficial to ensure that the system can self-process faults during operation and ensure the safety of the system.

[0046] A second aspect of the present invention provides a method for testing a low-voltage power supply and distribution system in a data center, comprising:

[0047] Step S1: collecting real-time environmental data through environmental sensors; collecting real-time power data of low-voltage power supply and distribution system through data sensors;

[0048] Step S2: adjusting the electric energy standard range of the low-voltage power supply and distribution system according to the real-time environmental data;

[0049] Step S3: testing the performance indicators of the low-voltage power supply and distribution system according to the real-time power data;

[0050] Step S4: obtaining fault items of the low-voltage power supply and distribution system; using the fault items to perform fault simulation on the low-voltage power supply and distribution system to obtain simulation results;

[0051] Step S5: adjusting the low voltage power supply and distribution system according to the test results; optimizing the low voltage power supply and distribution system according to the simulation results.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] 1. The present invention collects real-time environmental data, analyzes the real-time environment in which the low-voltage power supply and distribution system is located, and adjusts the electric energy standard range according to the environment, which can lay a foundation for subsequent testing of the low-voltage power supply and distribution system, and is beneficial to improving the accuracy of the test results; compares the real-time electric energy data with the electric energy standard range to determine whether the low-voltage power supply and distribution system has passed the test, and can detect problems existing in the system before the low-voltage power supply and distribution system is officially put into operation, which is beneficial to ensuring the normal operation of the system; analyzes and annotates nodes according to the structural topology diagram of the low-voltage power supply and distribution system, calculates the priority of the annotated nodes, selects the annotated nodes with the highest priority in each branch line as test points, and marks the key points and test points as harmonic test points; can select appropriate harmonic test points to detect the harmonic content, which is beneficial to improving the accuracy of the analysis results.

[0054] 2. The present invention constructs a digital twin model according to the structural topology diagram of the low-voltage power supply and distribution system, and sets fault data according to the fault item; introduces the fault data into the digital twin model to simulate the fault; can analyze the system's fault self-processing module, which is beneficial to ensure that the system turns on the protection mode when a fault occurs; adjusts the low-voltage power supply and distribution system according to the test results; when the test result is failed, adjusts the system to ensure the normal operation of the system; optimizes the low-voltage power supply and distribution system according to the results of the fault simulation, and when the corresponding fault response module does not respond, notifies the technician to inspect and process the module, which is beneficial to ensure that the system can self-process faults during operation and ensure the safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0056] Figure 1 It is a schematic diagram of the overall steps of the present invention;

[0057] Figure 2 is a schematic diagram of the real-time electric energy data analysis steps of the present invention;

[0058] Figure 3 A schematic diagram of the steps for calculating harmonic content of the present invention;

[0059] Figure 4 A schematic diagram of the fault simulation steps of the present invention;

[0060] Figure 5 Schematic diagram of the steps of the method of the present invention. DETAILED DESCRIPTION

[0061] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] See also Figure 1 , the first aspect of the present invention provides a test system for a low-voltage power supply and distribution system of a data center, comprising: a power distribution test module, and a data acquisition module and a terminal processing module connected thereto;

[0063] Data acquisition module: used to collect real-time environmental data through environmental sensors; collect real-time power data of low-voltage power supply and distribution system through data sensors; adjust the power standard range of low-voltage power supply and distribution system according to real-time environmental data;

[0064] Power distribution test module: used to test the performance indicators of the low-voltage power supply and distribution system according to real-time power data; obtain the fault items of the low-voltage power supply and distribution system; use the fault items to simulate the faults of the low-voltage power supply and distribution system and obtain the simulation results;

[0065] Terminal processing module: used to adjust the low-voltage power supply and distribution system according to the test results; optimize the low-voltage power supply and distribution system according to the simulation results.

[0066] See also Figure 2 , collect real-time environmental data through environmental sensors; collect real-time power data of low-voltage power supply and distribution system through data sensors; obtain environmental standard range; wherein the real-time environmental data includes real-time temperature and real-time humidity; determine whether the real-time environmental data are all within the environmental standard range; if yes, there is no need to adjust the power standard range; if no, generate a standard adjustment signal to adjust the power standard range;

[0067] Retrieve real-time environmental data; obtain optimal environmental data; the optimal environmental data is the optimal temperature and optimal humidity of the system in operation; mark the real-time temperature and real-time humidity in the real-time environmental data as ST and SD respectively; mark the optimal temperature and optimal humidity in the optimal environmental data as ZT and ZD respectively; through the formula Calculate the adjustment range of the electric energy standard; adjust the electric energy standard according to the adjustment range of the electric energy standard; wherein θ is a proportionality coefficient greater than 0.

[0068] It should be noted that the optimum environmental data is determined based on the equipment in the low-voltage power supply and distribution system; θ is set based on actual experience.

[0069] For example: suppose you start testing a low-voltage power supply and distribution system, collect real-time environmental data through environmental sensors; collect real-time power data of the low-voltage power supply and distribution system through data sensors; calculate the adjustment range through a formula; and adjust the power standard range upward or downward based on the adjustment range.

[0070] Retrieve real-time electric energy data; the real-time electric energy data includes: real-time current, real-time voltage and harmonic content; the harmonic content is obtained by analyzing with a harmonic analyzer; determine whether the real-time electric energy data are all within the electric energy standard range; if yes, mark the test result as passed; if not, mark the real-time electric energy data that exceeds the range, and mark the test result as failed.

[0071] It should be noted that by collecting real-time environmental data of the low-voltage power supply and distribution system through environmental sensors, the test environment of the system can be evaluated. When the test environment affects the system test, the system's power standard range can be adjusted. The standard can be dynamically adjusted according to the actual environment, which is conducive to improving the accuracy of the test results.

[0072] For example: assuming that real-time power data of the low-voltage power supply and distribution system is collected at time T1, and after analysis it is found that the real-time voltage is not within the voltage range, the test result is marked as test failure; and the voltage in the real-time power data is marked.

[0073] See also Figure 3, obtain the structural topology diagram of the low-voltage power supply and distribution system, convert the structural topology diagram into a single-line diagram, and mark the loads in the diagram to obtain the marked nodes; obtain important data of several marked nodes; among which, the important data include: the degree of influence of harmonics and the number of faults; mark the degree of influence of harmonics and the number of faults in the important data as XY and GC respectively; calculate the priority of the marked node by the formula YJ=α×lg(XY+1)+β×GC^2; among which, α and β are proportional coefficients greater than 0; divide the marked nodes on the same branch line into the same test area according to the single-line diagram, and select the marked nodes with the highest priority as the test points of the test area; obtain the key points in the single-line diagram, and mark the key points and test points as harmonic test points.

[0074] It should be noted that α and β are set by experts based on actual experience.

[0075] For example: Assume that the harmonic test points of the low-voltage power supply and distribution system are set, obtain the structural topology of the low-voltage power supply and distribution system, and convert the resulting topology into a single-line diagram; calculate the priority of the marked nodes in one of the branch lines, α = 10, β = 1; the steps are as follows:

[0076] Marking node 1: the degree of harmonic influence XY = 65; the number of faults GC = 3; the priority is 27.19;

[0077] Marking node 2: the degree of influence by harmonics XY = 54; the number of faults GC = 2; the priority is 21.40;

[0078] Marking node 3: the degree of influence by harmonics XY = 73; the number of faults GC = 4; the priority is 34.69;

[0079] Select the marked node 3 as the test point according to the priority; similarly, obtain all the test points of the low-voltage power supply and distribution system and obtain the key points in the single-line diagram; mark the key points and test points as harmonic test points.

[0080] Obtain the harmonic test points and set the harmonic analyzer on the harmonic test points; wherein the harmonic test points are set according to the load in the low-voltage power supply and distribution system; use the harmonic analyzer to collect the harmonic effective values ​​and fundamental effective values ​​at several harmonic test points; and use the formula Calculate the voltage harmonic distortion; by formula Calculate the current harmonic distortion; calculate the harmonic content of the low-voltage power supply and distribution system by weighted average; where i represents the number of times the harmonic occurs, i = 1, 2…, n, n is a positive integer; U i represents the voltage effective value of the i-th harmonic; U represents the voltage effective value of the fundamental wave; I irepresents the effective value of the current of the i-th harmonic; I represents the effective value of the current of the fundamental wave; the harmonic content includes the voltage harmonic content and the current harmonic content.

[0081] It should be noted that the loads are marked according to the structural topology diagram of the low-voltage power supply and distribution system to obtain marked nodes, the priorities of the marked nodes are calculated according to the important data of the marked nodes, and the marked nodes with the highest priority are selected as test points in the test area; the key points and test points in the system are marked as harmonic test points; and the harmonic test points can be reasonably set, which is conducive to improving the accuracy of system testing.

[0082] See also Figure 4 , retrieve the structural topology diagram of the low-voltage power supply and distribution system, and use simulation software to build a digital twin model based on the structural topology diagram; set the initial operating state of the digital twin model; retrieve the fault project, set the fault data according to the fault project, introduce the fault data into the digital twin model, and determine whether the digital twin model performs a corresponding fault response. If yes, mark the simulation result as a successful fault simulation; if not, mark the simulation result as a failed fault simulation; wherein the fault data includes fault type, fault location, fault time, and fault duration.

[0083] For example: suppose a digital twin model is built for the result topology diagram of the low-voltage power supply and distribution system, the initial operating state of the digital twin model is set, and the operation of the system is simulated; fault data is set according to the fault item, and the fault data is introduced into the digital twin model for fault simulation. When the fault simulation is performed, the fault short-circuit protection module does not respond, and the fault simulation fails.

[0084] Retrieve the test results to determine whether the test is passed; if yes, maintain the low-voltage power supply and distribution system; if no, analyze the reasons for the test failure; retrieve real-time electric energy data that is not within the electric energy standard range and obtain the adjustment processing library; match the real-time electric energy data with the adjustment processing library to obtain the corresponding adjustment measures; adjust the low-voltage power supply and distribution system according to the corresponding adjustment measures.

[0085] It should be noted that when the voltage does not meet the standard, the measures that can be taken include: adjusting the transformer, installing a voltage stabilizer, using a static VAR generator or a static synchronous compensator, etc.; when the current does not meet the standard, the measures that can be taken include: replacing cables, circuit breakers or other electrical components with larger capacity; providing independent power supply circuits for large loads; correctly configuring the setting values ​​of circuit breakers and fuses, etc.; when the harmonic content does not meet the standard, the measures that can be taken include: installing a harmonic filter; adding a DC link inductor to the input of the inverter; using shielded cables to connect sensitive equipment.

[0086] For example: if the test result at time T1 is a test failure, the reason for the test failure is analyzed to be that the real-time voltage is not within the voltage standard range, and the real-time voltage is matched with the adjustment processing library, and the corresponding adjustment measure is to adjust the transformer, and the transformer is adjusted.

[0087] Retrieve the simulation results to determine whether the fault simulation is successful; if yes, keep the low-voltage power supply and distribution system running; if no, analyze the reasons for the failure of the simulation results; retrieve the unresponsive fault items, and determine the corresponding low-voltage power supply and distribution system response module according to the fault items; generate a system optimization signal, and send the corresponding system response module to the technical processing personnel for system optimization.

[0088] For example: the unresponsive module corresponding to the failure of the fault simulation is retrieved as the short-circuit protection module, and the optimization signal for optimizing the short-circuit protection module is sent to the technical processing personnel. The technical processing personnel checks and optimizes the short-circuit protection module until the short-circuit protection module can respond to the short-circuit fault.

[0089] It should be noted that a digital twin model is constructed based on the structural topology diagram of the low-voltage power supply and distribution system, and the initial operating state of the digital twin model is set; fault data is set according to the fault item, the fault data is introduced into the digital twin model, and the response of the digital twin model to the fault is analyzed; when the digital twin model does not respond to the fault, the unresponsive fault module is checked and optimized; the fault handling capability of the low-voltage power supply and distribution system can be evaluated, which is conducive to improving the safety of the system.

[0090] See also Figure 5 The second aspect of the present invention provides a method for testing a low-voltage power supply and distribution system of a data center, comprising:

[0091] Step S1: collecting real-time environmental data through environmental sensors; collecting real-time power data of low-voltage power supply and distribution system through data sensors;

[0092] Step S2: adjusting the electric energy standard range of the low-voltage power supply and distribution system according to the real-time environmental data;

[0093] Step S3: testing the performance indicators of the low-voltage power supply and distribution system according to the real-time power data;

[0094] Step S4: obtaining fault items of the low-voltage power supply and distribution system; using the fault items to perform fault simulation on the low-voltage power supply and distribution system to obtain simulation results;

[0095] Step S5: adjusting the low voltage power supply and distribution system according to the test results; optimizing the low voltage power supply and distribution system according to the simulation results.

[0096] Part of the data in the above formula is calculated by removing the dimension and taking its numerical value. The formula is a formula closest to the actual situation obtained by software simulation of a large amount of collected data; the preset parameters and preset thresholds in the formula are set by technical personnel in this field according to actual conditions or obtained through simulation of a large amount of data.

[0097] The working principle of the present invention is as follows: the present invention collects real-time environmental data through environmental sensors; collects real-time electric energy data of a low-voltage power supply and distribution system through data sensors; adjusts the electric energy standard range of the low-voltage power supply and distribution system according to the real-time environmental data; tests the performance indicators of the low-voltage power supply and distribution system according to the real-time electric energy data; obtains fault items of the low-voltage power supply and distribution system; performs fault simulation on the low-voltage power supply and distribution system using the fault items to obtain simulation results; adjusts the low-voltage power supply and distribution system according to the test results; and optimizes the low-voltage power supply and distribution system according to the simulation results.

[0098] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A test system for a low-voltage power supply and distribution system in a data center, characterized in that: include: Power distribution test module, and the data acquisition module and terminal processing module connected thereto; Data acquisition module: used to collect real-time environmental data through environmental sensors; collect real-time power data of low-voltage power supply and distribution system through data sensors; adjust the power standard range of low-voltage power supply and distribution system according to real-time environmental data; Power distribution test module: used to test the performance indicators of the low-voltage power supply and distribution system based on real-time power data; Obtain fault items of the low-voltage power supply and distribution system; use the fault items to perform fault simulation on the low-voltage power supply and distribution system to obtain simulation results; Terminal processing module: used to adjust the low-voltage power supply and distribution system according to the test results; optimize the low-voltage power supply and distribution system according to the simulation results.

2. A test system for a low-voltage power supply and distribution system in a data center according to claim 1, characterized in that: The adjusting of the electric energy standard range of the low-voltage power supply and distribution system according to the real-time environmental data includes: Retrieve real-time environmental data; obtain the environmental standard range; wherein the real-time environmental data includes real-time temperature and real-time humidity; Determine whether the real-time environmental data are all within the environmental standard range; if yes, there is no need to adjust the electric energy standard range; if not, generate a standard adjustment signal to adjust the electric energy standard range.

3. A test system for a low-voltage power supply and distribution system in a data center according to claim 2, characterized in that: The generating of the standard adjustment signal to adjust the electric energy standard range includes: Retrieve real-time environmental data; obtain optimal environmental data; wherein the optimal environmental data is the optimal temperature and optimal humidity of the system in operation; The real-time temperature and real-time humidity in the real-time environmental data are marked as ST and SD respectively; the optimum temperature and optimum humidity in the optimum environmental data are marked as ZT and ZD respectively; By formula Calculate the adjustment range of the electric energy standard; adjust the electric energy standard according to the adjustment range of the electric energy standard; wherein θ is a proportional coefficient greater than 0.

4. A test system for a low-voltage power supply and distribution system of a data center according to claim 3, characterized in that: The testing of the performance indicators of the low-voltage power supply and distribution system according to the real-time power data includes: Retrieve real-time power data; real-time power data includes: real-time current, real-time voltage and harmonic content; harmonic content is obtained through analysis by a harmonic analyzer; Determine whether the real-time power data are all within the power standard range; if yes, mark the test result as passed; if not, mark the real-time power data that exceeds the range and mark the test result as failed.

5. A test system for a low-voltage power supply and distribution system in a data center according to claim 4, characterized in that: The harmonic content is obtained by analyzing with a harmonic analyzer, including: Obtain a harmonic test point and set a harmonic analyzer on the harmonic test point; wherein the harmonic test point is set according to a load in a low-voltage power supply and distribution system; Use a harmonic analyzer to collect the harmonic effective values ​​and fundamental effective values ​​at several harmonic test points; Calculate the voltage harmonic distortion; by formula Calculate the current harmonic distortion; calculate the harmonic content of the low-voltage power supply and distribution system using the weighted average method; Where i represents the number of times the harmonic occurs, i = 1, 2…, n, n is a positive integer; U i represents the voltage effective value of the i-th harmonic; U represents the voltage effective value of the fundamental wave; I i represents the effective value of the current of the i-th harmonic; I represents the effective value of the current of the fundamental wave; the harmonic content includes the voltage harmonic content and the current harmonic content.

6. A test system for a low-voltage power supply and distribution system in a data center according to claim 5, characterized in that: The harmonic test points are set according to the load in the low voltage power supply and distribution system, including: Obtain a structural topology diagram of a low-voltage power supply and distribution system, convert the structural topology diagram into a single-line diagram, and mark the loads in the diagram to obtain marked nodes; Obtain important data of several marked nodes; the important data include: the degree of harmonic influence and the number of faults; mark the degree of harmonic influence and the number of faults in the important data as XY and GC respectively; calculate the priority of the marked node by the formula YJ=α×lg(XY+1)+β×GC^2; α and β are proportional coefficients greater than 0; According to the single-line diagram, the marked nodes on the same branch line are divided into the same test area, and the marked nodes with the highest priority are selected as the test points of the test area; the key points in the single-line diagram are obtained, and the key points and test points are marked as harmonic test points.

7. A test system for a low-voltage power supply and distribution system in a data center according to claim 1, characterized in that: The method of using the fault item to simulate the low voltage power supply and distribution system to obtain the simulation result includes: Retrieve the structural topology diagram of the low-voltage power supply and distribution system, and build a digital twin model using simulation software based on the structural topology diagram; set the initial operating state of the digital twin model; Retrieve the fault project, set the fault data according to the fault project, introduce the fault data into the digital twin model, and determine whether the digital twin model performs the corresponding fault response. If yes, mark the simulation result as a successful fault simulation; if not, mark the simulation result as a failed fault simulation; wherein the fault data includes the fault type, fault location, fault time, and fault duration.

8. A test system for a low-voltage power supply and distribution system in a data center according to claim 1, characterized in that: The adjusting of the low voltage power supply and distribution system according to the test results includes: Retrieve the test results to determine whether the test is passed; if yes, maintain the low-voltage power supply and distribution system; if no, analyze the reasons for the test failure; Retrieve real-time electric energy data that is not within the electric energy standard range and obtain an adjustment processing library; match the real-time electric energy data with the adjustment processing library to obtain corresponding adjustment measures; and adjust the low-voltage power supply and distribution system according to the corresponding adjustment measures.

9. A test system for a low-voltage power supply and distribution system in a data center according to claim 1, characterized in that: The optimization of the low voltage power supply and distribution system according to the simulation results includes: Retrieve the simulation results and determine whether the fault simulation is successful; if yes, keep the low-voltage power supply and distribution system running; if no, analyze the reasons for the failure of the simulation results; Retrieve the unresponsive fault items, and determine the corresponding low-voltage power supply and distribution system response module according to the fault items; generate a system optimization signal, and send the corresponding system response module to the technical processing personnel for system optimization.

10. A method for testing a low-voltage power supply and distribution system in a data center, applied to a test system for a low-voltage power supply and distribution system in a data center as claimed in any one of claims 1 to 9, characterized in that: include: Step S1: collecting real-time environmental data through environmental sensors; collecting real-time power data of low-voltage power supply and distribution system through data sensors; Step S2: adjusting the electric energy standard range of the low-voltage power supply and distribution system according to the real-time environmental data; Step S3: testing the performance indicators of the low-voltage power supply and distribution system according to the real-time power data; Step S4: obtaining fault items of the low-voltage power supply and distribution system; using the fault items to perform fault simulation on the low-voltage power supply and distribution system to obtain simulation results; Step S5: adjusting the low voltage power supply and distribution system according to the test results; optimizing the low voltage power supply and distribution system according to the simulation results.

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