Power frequency electric field test method of energy storage fire extinguishing system
Through electromagnetic simulation and power frequency electric field test systems, the anti-interference performance of fire-fighting equipment in energy storage systems is evaluated and optimized, solving the instability and false alarm problems of fire-fighting equipment under power frequency electric fields and improving the reliability and accuracy of the system.
Patent Information
- Application Number
- CN202510714020.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2025-09-09
AI Technical Summary
The existing fire-fighting equipment's ability to resist power-frequency electric fields in energy storage systems has not been effectively evaluated, leading to problems such as equipment instability and false alarms, affecting the reliability and accuracy of the fire-fighting system.
Electromagnetic simulation software is used for simulation analysis, and an industrial frequency electric field test system is constructed. By using an adjustable transformer, a signal reflection cover and a fire protection system test bench, and integrating fire control equipment and sensors, the fire protection system's immunity to industrial frequency electric fields of different amplitudes is tested, and electromagnetic compatibility rectification is carried out.
The anti-interference test and rectification effect verification of the fire protection system under the power frequency electric field are realized, the reliability and accuracy of the fire protection equipment in the energy storage system are improved, and false alarms and equipment damage are avoided.
Smart Images
Figure CN120610087A_ABST
Abstract
Description
[0001] This case is a divisional application based on the invention patent with application date of March 20, 2025, application number 2025103295455, and titled "A power frequency electric field testing system and testing method suitable for energy storage fire protection system" as the parent case. Technical Field
[0002] The present invention belongs to the technical field of energy storage systems, and in particular relates to a power frequency electric field testing method for an energy storage fire protection system. Background Art
[0003] In recent years, with economic development, environmental awareness has become increasingly important. Consequently, countries around the world are vigorously developing new energy sources. With the advancement of battery technology and the automotive industry, automotive CTB and CTC technologies have further increased battery capacity and charging power, ushering in rapid growth for new energy vehicles. As the primary energy source for these vehicles, DC charging piles are facing a surge in demand. During the charging process, grid voltage and current harmonics are affected, disrupting energy metering and making it difficult to ensure grid reliability, security, and fairness. Therefore, addressing and optimizing the negative impacts of charging piles during charging has become a crucial task in promoting charging piles and developing power grids.
[0004] With the rapid development of new battery energy storage systems, battery rooms / cabins are required to be equipped with combustible gas detectors, temperature detectors, smoke detectors, and other fire detectors to ensure charging safety. Simultaneously, with advances in lithium battery technology, battery cooling methods are constantly evolving, gradually increasing the system's energy density. This will inevitably require the energy density of PCSs to be further increased to match the energy density of the entire system. High-power PCSs are gradually becoming mainstream, which has also led to increasingly severe electromagnetic field interference in energy storage cabinets.
[0005] Existing EMC tests (such as GB_T 17626 and IEC 61000-4) do not include power-frequency electric fields as part of standard electromagnetic compatibility (EMC) testing. However, due to the nature of energy storage systems, they are constantly engaged in AC-DC, DC-DC, and DC-AC energy conversion. This exposure to constantly changing electric fields within the system space can induce currents and voltages on internal conductors, leading to the following problems: On the one hand, the induced power frequency electric field causes instability in the internal circuits of the fire-fighting equipment, causing damage to the equipment; On the other hand, the power frequency electric field will introduce background noise, affecting the accuracy of the fire-fighting equipment's measurement results, resulting in inaccurate data and false fire alarms, which in turn affects the use of the energy storage system and reduces its reliability.
[0006] However, most fire detector products on the market today still use the GB16806 standard of the fire protection industry, and most manufacturers have not developed fire detectors specifically for the energy storage industry that are adapted to its electromagnetic environment.
[0007] Fire protection products under existing fire protection standards do not have relevant standards for EMC interference of electromagnetic fields. The products lack electromagnetic field protection, and the relevant equipment has weak resistance to electromagnetic field interference. In addition, manufacturers are unable to know the corresponding anti-interference level of the products. As a result, existing fire protection products have inaccurate accuracy and false alarms in the energy storage system, which in turn affects the detection of fires. Summary of the Invention
[0008] The technical problem to be solved by the present invention is to provide a power frequency electric field testing method for an energy storage fire protection system to predict the anti-interference ability of fire protection equipment to the power frequency electric field in the actual environment of the energy storage system, thereby facilitating the subsequent verification of its rectification effect.
[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is: A method for testing an energy storage fire protection system using a power frequency electric field, comprising the steps of: S1. Use electromagnetic simulation software to perform simulation analysis in advance, specifically: establishing a geometric model of the actual system using CATIA, including a power source, a conductor, and an insulating material, assigning material properties to various parts of the geometric model of the actual system, applying a voltage or current source to the conductor, and meshing the geometric model of the actual system; Selecting a solver for the actual system geometric model and configuring parameters of the solver; Run the simulation program and monitor the simulation progress bar and log information. After the simulation is complete, use visualization tools to view the electric field strength and potential distribution results to predict the power frequency electric field strength that the energy storage fire protection system must withstand in the actual environment. S2. Based on the simulation results, start the power frequency electric field test system and adjust the adjustable transformer to output power frequency electric fields of different amplitudes; S3. A signal reflector shield disposed around the adjustable transformer reflects power frequency electric fields of varying amplitudes and focuses them on the fire protection system frame. The signal reflector shield has an opening on one side so that the adjustable transformer faces the fire protection system frame. The signal reflector shield is made of a single metal or alloy. S4. Using the various fire control devices and sensors integrated in the fire protection system test bench to form various energy storage fire protection systems, and using the various energy storage fire protection systems to test the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes; S5. Based on the test results, conduct electromagnetic compatibility rectification on various energy storage fire protection systems and verify the rectification effect.
[0010] The beneficial effects of the present invention are: providing a power frequency electric field testing method for an energy storage fire protection system, wherein the power frequency electric field testing system is formed by a power frequency electric field testing bench composed of an adjustable transformer, a signal reflection cover and a fire protection system bench, and electromagnetic simulation software is used in advance to perform simulation analysis and prediction to obtain the power frequency electric field strength of different amplitudes that the energy storage fire protection system needs to withstand in an actual environment. Subsequently, the power supply current is output by the adjustable transformer, and the amplitude of the power frequency electric field is changed by adjusting the output of the adjustable transformer based on the prediction result. The signal reflection cover arranged on the periphery of the adjustable transformer reflects the power frequency electric fields of different amplitudes and concentrates them on the fire protection system bench, so that after the fire protection system bench is composed of various energy storage fire protection systems through the integrated various fire control equipment and sensors, the immunity of the corresponding fire protection system under power frequency electric fields of different amplitudes is tested by various energy storage fire protection systems, thereby facilitating the subsequent EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems and verification of the rectification effect based on the test results. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a structural diagram of a power frequency electric field testing system applicable to an energy storage fire protection system according to an embodiment of the present invention; Figure 2 This is a flow chart of a power frequency electric field testing method applicable to an energy storage fire protection system according to an embodiment of the present invention.
[0012] Description of labels: 1. Adjustable transformer; 2. Signal reflector; 3. AC-DC converter; 4. Load; 5. Fire protection system stand; 6. Radiation meter; 7. Circuit breaker; 8. Fuse; 9. PE grounding system. DETAILED DESCRIPTION
[0013] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.
[0014] Please refer to Figure 1 , a power frequency electric field test system suitable for energy storage fire protection systems, including an adjustable transformer, a signal reflection cover, an AC-DC converter, a load and a fire protection system test bench; The load, the AC-DC converter, the adjustable transformer and the power supply are connected in sequence; The signal reflection cover is arranged on the periphery of the adjustable transformer and has an opening so that the adjustable transformer faces the fire protection system stand. The signal reflection cover is used to reflect the power frequency electric field adjusted and output by the adjustable transformer so that the power frequency electric field acts on the fire protection system stand. The fire protection system stand integrates a variety of fire protection control equipment and sensors and is connected to the power supply. The various fire protection control equipment and sensors are used to form various energy storage fire protection systems to test the anti-interference performance of the corresponding fire protection systems under power frequency electric fields of different amplitudes.
[0015] From the above description, it can be seen that the beneficial effects of the present invention are: providing an industrial frequency electric field test system suitable for an energy storage fire protection system, wherein the industrial frequency electric field test bench is composed of an adjustable transformer, a signal reflection cover, an AC-DC converter, a load and a fire protection system stand to form an industrial frequency electric field test system, wherein the adjustable transformer converts the power supply current output into direct current that can be used by the load through the AC-DC converter, and the amplitude of the industrial frequency electric field is changed by adjusting the output of the adjustable transformer, and then the signal reflection cover arranged on the periphery of the adjustable transformer reflects the industrial frequency electric fields of different amplitudes and concentrates them on the fire protection system stand, so that after the fire protection system stand is composed of various energy storage fire protection systems through the integrated various fire control equipment and sensors, the immunity of the corresponding fire protection system under industrial frequency electric fields of different amplitudes is tested by various energy storage fire protection systems, thereby facilitating the subsequent EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems and verification of the rectification effect based on the test results.
[0016] Furthermore, the signal reflection cover is a reflection cover made of a single metal or alloy material.
[0017] As can be seen from the above description, a signal reflector made of a single metal or alloy material is used to wrap the adjustable transformer, so that the power frequency electric field generated by the transformer can be effectively concentrated and reflected into the fire protection system stand.
[0018] Furthermore, it also includes a radiometer; The radiation meter is arranged beside the fire protection system stand and is used to measure the power frequency electric field radiation received by the fire protection system stand.
[0019] From the above description, it can be seen that the radiation meter is added to detect the power frequency electric field strength to which the current fire protection system stand is subjected, and to provide data support for adjusting the adjustable transformer to adjust the power frequency electric field strength.
[0020] Further, a circuit breaker is included; The circuit breaker is arranged between the circuit connection of the adjustable transformer and the power supply and between the circuit connection of the fire protection system stand and the power supply.
[0021] As can be seen from the above description, adding circuit breakers between the power supply and the circuit connection of the adjustable transformer and between the power supply and the circuit connection of the fire protection system test bench can automatically cut off the circuit when there is excessive current, overload, short circuit, etc. in the power frequency electric field test bench to prevent equipment damage or fire.
[0022] Furthermore, the circuit breaker is a 2P+PE leakage circuit breaker.
[0023] As can be seen from the above description, a 2P+PE leakage circuit breaker is used as a protective device to detect and cut off leakage current or overload in the system circuit, thereby further ensuring the safety of the electrical system and preventing electric shock accidents and electrical fires caused by leakage and overload.
[0024] Further, a fuse is included; The fuse is disposed between the adjustable transformer and the circuit connection of the AC-DC converter.
[0025] As can be seen from the above description, adding a fuse to the circuit connection between the adjustable transformer and the AC-DC converter will cause the fuse to melt when the output current of the adjustable transformer exceeds the rated value of the AC-DC, thereby disconnecting the circuit and further preventing problems caused by overload or short circuit.
[0026] Furthermore, it also includes a PE grounding system; The PE grounding system is used to ground the non-live metal parts of the electrical equipment in the fire protection system stand.
[0027] As can be seen from the above description, the PE grounding system can ground the non-live metal parts of electrical equipment, such as the casing and frame, to ensure that the current can safely flow into the earth when a system fault occurs, thereby avoiding electric shock accidents and protecting personnel and equipment from electric shock hazards. While ensuring electrical safety, the PE grounding system can also be used to test the impact of the grounding status of the fire protection system bench on the power frequency electric field immunity.
[0028] Furthermore, the load is an electronic DC load of multiple different powers, which is used to continuously consume the DC power regulated by the adjustable transformer and converted by the AC-DC converter.
[0029] From the above description, it can be seen that the load is used to continuously consume the DC power after the adjustable transformer performs voltage regulation and conversion by the AC-DC converter, ensuring that the adjustable transformer can continuously generate an industrial frequency electric field for testing. At the same time, electronic DC loads of different powers can also adjust the power to further control the industrial frequency electric field strength, and cooperate with the adjustable transformer to achieve better control of industrial frequency electric field strengths of different sizes.
[0030] Furthermore, the fire control equipment and sensors include fire alarm controllers, smoke detectors, temperature detectors, combustible gas detectors and flame detectors.
[0031] From the above description, it can be seen that the fire protection system test bench can freely combine various fire control equipment and sensors into corresponding fire protection systems according to actual usage requirements, thereby verifying the anti-interference performance of the corresponding fire protection system under power frequency electric fields of different amplitudes, and verifying whether the added electromagnetic protection is effective.
[0032] Please refer to Figure 2 , applied to a power frequency electric field test system suitable for an energy storage fire protection system, comprising the steps of: S1. Use electromagnetic simulation software to perform simulation analysis in advance to predict the power frequency electric field strength that the energy storage fire protection system must withstand in the actual environment; S2. Based on the simulation results, start the power frequency electric field test system and adjust the adjustable transformer to output power frequency electric fields of different amplitudes; S3, using a signal reflection cover provided on the periphery of the adjustable transformer to reflect power frequency electric fields of different amplitudes to the fire protection system stand; S4. Various fire control devices and sensors integrated in the fire protection system test bench are used to form various energy storage fire protection systems, and the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes is tested by various fire protection systems; S5. Based on the test results, conduct electromagnetic compatibility rectification on various energy storage fire protection systems and verify the rectification effect.
[0033] As can be seen from the above description, the beneficial effects of the present invention are: based on the same technical concept, applied to the above-mentioned power frequency electric field test system for energy storage fire protection systems, a power frequency electric field test method for energy storage fire protection systems is provided, wherein the power frequency electric field test bench composed of an adjustable transformer, a signal reflection cover, an AC-DC converter, a load and a fire protection system stand is used to form a power frequency electric field test system, wherein the adjustable transformer converts the power supply current output into direct current that can be used by the load through the AC-DC converter, and the amplitude of the power frequency electric field is changed by adjusting the output of the adjustable transformer. The signal reflection cover provided on the periphery of the adjustable transformer reflects the power frequency electric fields of different amplitudes and concentrates them on the fire protection system stand, so that after the fire protection system stand is composed of various energy storage fire protection systems through the integrated various fire control devices and sensors, the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes is tested by various energy storage fire protection systems, thereby facilitating the subsequent EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems and verification of the rectification effect based on the test results.
[0034] The present invention provides a power frequency electric field testing system and method for energy storage fire protection systems. The system and method are suitable for use in scenarios where the tolerance of corresponding energy storage fire protection system equipment to power frequency electric fields is discovered in the early stages of energy storage fire protection system design, thereby optimizing equipment selection. The system and method are described in detail below with reference to specific embodiments. Please refer to Figure 1, embodiment 1 of the present invention is: A power frequency electric field test system suitable for energy storage fire protection system, such as Figure 1 As shown, it includes an adjustable transformer 1, a signal reflection cover 2, an AC-DC converter 3, a load 4 and a fire protection system stand 5.
[0035] Among them, the load 4, the AC-DC converter 3, the adjustable transformer 1 and the power supply are connected in sequence; the signal reflection cover 2 is arranged on the periphery of the adjustable transformer 1, and an opening is opened to make the adjustable transformer 1 face the fire protection system stand 5. The signal reflection cover 2 is used to reflect the power frequency electric field adjusted and output by the adjustable transformer 1, so that the power frequency electric field acts on the fire protection system stand 5; the fire protection system stand 5 integrates a variety of fire control equipment and sensors and is connected to the power supply. The various fire control equipment and sensors are used to form various energy storage fire protection systems to test the anti-interference performance of the corresponding fire protection systems under power frequency electric fields of different amplitudes.
[0036] Specifically, in this embodiment, a power frequency electric field test bench, comprising an adjustable transformer 1, a signal reflector 2, an AC-DC converter 3, a load 4, and a fire protection system test bench 5, forms a power frequency electric field test system. The adjustable transformer 1 converts the power supply current output through the AC-DC converter 3, where it undergoes rectification and filtering, converting it into a stable DC voltage for subsequent use by the load 4, thereby consuming the transformer's energy. During transformer operation, the high voltage present in the high-voltage output circuit generates a varying electric field in the surrounding space when transmitting current. By leveraging the property that electric field strength is proportional to voltage, the amplitude of the power frequency electric field can be varied by adjusting the output of the adjustable transformer 1. The signal reflector 2, located around the outer periphery of the adjustable transformer 1, then reflects the power frequency electric fields of varying amplitudes and focuses them on the fire protection system test bench 5. This allows the fire protection system test bench 5, which integrates various fire control devices and sensors to form various energy storage fire protection systems, to test the immunity of the corresponding fire protection systems under power frequency electric fields of varying amplitudes. This facilitates subsequent EMC rectification and verification of the effectiveness of these rectifications based on the test results.
[0037] In this embodiment, the signal reflection cover 2 is a reflection cover made of a single metal or alloy material.
[0038] That is, a signal reflection cover 2 made of a single metal or alloy material is used to wrap the adjustable transformer 1, so that the power frequency electric field generated by the transformer can be effectively concentrated and reflected into the fire protection system stand 5.
[0039] Meanwhile, the load 4 is an electronic DC load 4 of various powers, which is used to continuously consume the DC power regulated by the adjustable transformer 1 and converted by the AC-DC converter 3 .
[0040] That is, the load 4 is used to continuously consume the DC power after the voltage is regulated by the adjustable transformer 1 and converted by the AC-DC converter 3, ensuring that the adjustable transformer 1 can continuously generate an industrial frequency electric field for testing. At the same time, the electronic DC load 4 of different power can also adjust the power to further control the industrial frequency electric field strength, and cooperate with the adjustable transformer 1 to achieve better control of industrial frequency electric field strengths of different sizes.
[0041] In addition, in this embodiment, Figure 1 As shown, a PE grounding system 9 is also included, wherein the PE grounding system 9 is used to ground the non-live metal parts of the electrical equipment in the fire protection system stand 5.
[0042] That is, the PE grounding system 9 can ground the non-live metal parts of the electrical equipment used in the fire protection system stand, such as the casing, frame, etc., to ensure that the current can safely flow into the ground when a system failure occurs, thereby avoiding electric shock accidents and protecting personnel and equipment from electric shock hazards. In this embodiment, if the equipment in the fire protection system stand 5 uses a metal shielding cover, the induced charge generated on the shielding cover by the external electric field can quickly flow into the ground through the ground wire, thereby avoiding the accumulation of charge on the shielding cover, so that the equipment inside the shielding cover will not be affected by the external electric field. The same is true for the signal reflection cover 2; and the PE grounding system 9 can be used to test the impact of the grounding state of the fire protection system stand 5 on the immunity to power frequency electric field while ensuring electrical safety.
[0043] Please refer to Figure 1 , the second embodiment of the present invention is: A power frequency electric field test system suitable for energy storage fire protection system, based on the above embodiment 1, in this embodiment, as Figure 1 As shown, a radiation meter 6 is also included. The radiation meter 6 is arranged next to the fire protection system stand 5 and is used to measure the power frequency electric field radiation received by the fire protection system stand 5.
[0044] That is, in this embodiment, a radiation meter 6 is added to detect the power frequency electric field strength currently received by the fire protection system stand 5 , and provide data support for adjusting the adjustable transformer 1 to adjust the power frequency electric field strength.
[0045] At the same time, Figure 1 As shown, the apparatus further includes a circuit breaker 7, which is disposed between the circuit connection of the adjustable transformer 1 and the power supply, and between the circuit connection of the fire protection system bench 5 and the power supply. When an overcurrent, overload, or short circuit occurs in the power frequency electric field test bench, the circuit breaker 7 can automatically cut off the circuit to prevent equipment damage or fire. In this embodiment, the circuit breaker 7 uses a 2P+PE leakage circuit breaker 7 as a protective device for detecting and cutting off leakage current or overload in the system circuit, thereby further ensuring the safety of the electrical system and preventing electric shock accidents and electrical fires caused by leakage and overload.
[0046] In addition, Figure 1 As shown, a fuse 8 is further included, and the fuse 8 is arranged between the circuit connection of the adjustable transformer 1 and the AC-DC converter 3.
[0047] That is, a fuse 8 is added to the circuit connection between the adjustable transformer 1 and the AC-DC converter 3. When the output current of the adjustable transformer 1 exceeds the rated value of the AC-DC, the fuse 8 will melt, thereby cutting off the circuit and further preventing problems caused by overload or short circuit.
[0048] Please refer to Figure 2 , the third embodiment of the present invention is: A power frequency electric field testing method applicable to an energy storage fire protection system comprises the following steps: S1. Use electromagnetic simulation software to perform simulation analysis in advance to predict the power frequency electric field strength that the energy storage fire protection system needs to withstand in the actual environment.
[0049] S2. Based on the simulation results, start the power frequency electric field test system and adjust the adjustable transformer to output power frequency electric fields of different amplitudes.
[0050] S3. Through the signal reflection cover arranged on the periphery of the adjustable transformer, the power frequency electric fields of different amplitudes are reflected to the fire protection system stand.
[0051] S4. Use a variety of fire control equipment and sensors integrated in the fire system test bench to form various energy storage fire protection systems, and test the anti-interference performance of the corresponding fire protection systems under different amplitude power frequency electric fields through various fire protection system tests.
[0052] S5. Based on the test results, conduct electromagnetic compatibility rectification on various energy storage fire protection systems and verify the rectification effect.
[0053] That is, in this embodiment, based on the same technical concept, a power frequency electric field testing system for an energy storage fire protection system, as used in the first or second embodiments above, is provided. A power frequency electric field testing method for an energy storage fire protection system is provided. The power frequency electric field testing system is formed by a power frequency electric field test bench consisting of an adjustable transformer, a signal reflection cover, an AC-DC converter, a load, and a fire protection system stand. The adjustable transformer converts the power supply current output into direct current that can be used by the load via the AC-DC converter. The amplitude of the power frequency electric field is changed by adjusting the output of the adjustable transformer. The signal reflection cover, which is disposed around the outer periphery of the adjustable transformer, then reflects power frequency electric fields of different amplitudes and concentrates them on the fire protection system stand. After the fire protection system stand is assembled into various energy storage fire protection systems by integrating various fire control devices and sensors, the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes can be tested by the various energy storage fire protection systems. This facilitates subsequent EMC rectification of the electromagnetic compatibility of the various energy storage fire protection systems and verification of the rectification effect based on the test results.
[0054] In this embodiment, the specific steps of using electromagnetic simulation software to perform simulation analysis in step S1 are as follows: 1. Establish geometric model: Use CATIA to establish the actual system geometric model, including power supply, conductors, insulation materials, etc.
[0055] 2. Set Material Properties: Set material properties to assign appropriate material properties to each part of the model. For example, you can choose copper or aluminum for conductors, and air or plastic for insulation. Or, you can define your own material: For special materials, you can enter their physical parameters (such as relative permittivity, conductivity, etc.).
[0056] 3. Apply boundary conditions: Apply a voltage or current source to the conductor based on the actual situation. Boundary conditions such as infinite boundaries and symmetric boundaries can be set to simplify calculations.
[0057] 4. Meshing: Automatic meshing ensures model accuracy and computational efficiency. If necessary, the mesh density can be manually adjusted, especially in critical areas (such as near conductors) to improve accuracy.
[0058] 5. Solution settings: Select the appropriate solver (such as static solver, transient solver, etc.) according to the problem type.
[0059] 6. Set solution parameters: Configure solver parameters, such as time step, convergence criteria, etc.
[0060] 7. Run simulation: Run the simulation program and observe the simulation progress bar and log information to ensure that the simulation proceeds smoothly.
[0061] 8. Post-processing and result analysis: After the simulation is completed, the electric field strength, potential distribution and other results can be viewed through visualization tools, and the simulation results can be combined to verify them in the power frequency electric field test bench.
[0062] In step S5, electromagnetic compatibility (EMC) rectification is performed on various energy storage fire protection systems based on the test results, and the rectification effect is verified. Specifically, electromagnetic protection can be added to the fire protection system stand and the effectiveness of the electromagnetic protection can be verified. For example: The fire protection system can be recreated in a test bench based on the fire protection system application in the fire protection engineer's actual project to verify the overall anti-interference capability of the actual fire protection system. If an EMC failure occurs, the corresponding failed components or wiring harnesses can be corrected in the fire protection system test bench. The test bench can verify the improvement effect of the corresponding improvement measures, such as: (1) Add a shielding cover to the failed device to effectively reflect and absorb the electric field; (2) If the shielding cover fails, the shielding material can be replaced, and highly conductive metal materials can be used to increase the anti-interference effect, or the shielding cover structure can be increased to improve the anti-interference effect of the screen; (3) Use shielded cables instead of ordinary cables to reduce the power frequency electric field around the cable coupling and introduce interference into the connected equipment; (4) According to the layout of the equipment adjustment on the project, the position of the fire protection system stand (the distance from the voltage regulator) can be changed to reduce the interference of the power frequency electric field; (5) If the above corrective measures fail, the failed components can be reselected and re-verified on the fire protection system bench.
[0063] The use of a power frequency electric field test bench allows verification without relying on the actual system, reducing verification costs and time and improving design efficiency.
[0064] In summary, the present invention provides a power frequency electric field testing system and testing method for an energy storage fire protection system, which has the following beneficial effects: 1. The tolerance of the corresponding energy storage fire protection system equipment to the power frequency electric field can be discovered in advance at the early stage of energy storage fire protection system design, thereby optimizing equipment selection; 2. If the energy storage fire protection system is found to have insufficient anti-interference performance during testing, EMC rectification can be carried out and quickly verified. This effectively avoids the problem of fire control equipment and sensors being interfered with by electromagnetic fields in the energy storage system, resulting in measurement errors and false alarms, which affect the operation of the fire protection system and waste human resources.
[0065] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A power frequency electric field testing method for an energy storage fire protection system, characterized in that: Including steps: S1. Use electromagnetic simulation software to perform simulation analysis in advance, specifically: establishing a geometric model of the actual system using CATIA, including a power source, a conductor, and an insulating material, assigning material properties to various parts of the geometric model of the actual system, applying a voltage or current source to the conductor, and meshing the geometric model of the actual system; Selecting a solver for the actual system geometric model and configuring parameters of the solver; Run the simulation program and monitor the simulation progress bar and log information. After the simulation is complete, use visualization tools to view the electric field strength and potential distribution results to predict the power frequency electric field strength that the energy storage fire protection system must withstand in the actual environment. S2. Based on the simulation results, start the power frequency electric field test system and adjust the adjustable transformer to output power frequency electric fields of different amplitudes; S3. A signal reflector shield disposed around the adjustable transformer reflects power frequency electric fields of varying amplitudes and focuses them on the fire protection system frame. The signal reflector shield has an opening on one side so that the adjustable transformer faces the fire protection system frame. The signal reflector shield is made of a single metal or alloy. S4. Using the various fire control devices and sensors integrated in the fire protection system test bench to form various energy storage fire protection systems, and using the various energy storage fire protection systems to test the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes; S5. Based on the test results, conduct electromagnetic compatibility rectification on various energy storage fire protection systems and verify the rectification effect.
2. The power frequency electric field testing method of the energy storage fire protection system according to claim 1, characterized in that: The material properties are assigned to each part of the actual system geometric model, specifically: Select copper or aluminum as the conductor, and air or plastic as the insulation material; The grid division is specifically as follows: Automatically or manually adjust the mesh density for the actual system geometry.
3. The power frequency electric field testing method of an energy storage fire protection system according to claim 1, characterized in that: The solver includes a static solver and a transient solver; The parameters for configuring the solver are specifically: Configure the time step and convergence criterion of the solver.
4. The power frequency electric field testing method for an energy storage fire protection system according to claim 1, characterized in that: The power frequency electric field testing system also includes a radiation meter; The radiation meter is arranged beside the fire protection system stand and is used to measure the power frequency electric field radiation received by the fire protection system stand.
5. The power frequency electric field testing method of an energy storage fire protection system according to claim 1, characterized in that: The power frequency electric field testing system further includes a circuit breaker; The circuit breaker is arranged between the circuit connection of the adjustable transformer and the power supply and between the circuit connection of the fire protection system stand and the power supply.
6. The power frequency electric field testing method of the energy storage fire protection system according to claim 5, characterized in that: The circuit breaker is a 2P+PE leakage circuit breaker.
7. The power frequency electric field testing method of an energy storage fire protection system according to claim 1, characterized in that: The power frequency electric field testing system also includes an AC-DC converter and a fuse; The AC-DC converter, the adjustable transformer and the power supply are connected in sequence; The fuse is disposed between the adjustable transformer and the circuit connection of the AC-DC converter.
8. The power frequency electric field testing method for an energy storage fire protection system according to claim 1, characterized in that: The power frequency electric field testing system also includes a PE grounding system; The PE grounding system is used to ground the non-live metal parts of the electrical equipment in the fire protection system stand.
9. The power frequency electric field testing method for an energy storage fire protection system according to claim 1, characterized in that: The power frequency electric field testing system also includes an AC-DC converter and a load; The load, the AC-DC converter, the adjustable transformer and the power supply are connected in sequence; The loads are electronic DC loads of various powers, and are used to continuously consume the DC power that is voltage-regulated by the adjustable transformer and converted by the AC-DC converter.
10. The power frequency electric field testing method of an energy storage fire protection system according to claim 1, characterized in that: The fire control equipment and sensors include fire alarm controllers, smoke detectors, temperature detectors, combustible gas detectors and flame detectors.