Power frequency electric field test system and test method suitable for energy storage fire extinguishing system

Abstract

The invention provides a power frequency electric field test system and test method suitable for an energy storage fire extinguishing system. The power frequency electric field test system comprises an adjustable transformer, a signal reflection cover, an AC-DC converter, a load and a fire extinguishing system rack. The load, the AC-DC converter, the adjustable transformer and the power supply are connected in sequence; the signal reflecting cover covers the periphery of the adjustable transformer and is provided with an opening on one surface to enable the adjustable transformer to face the fire extinguishing system rack; and the fire-fighting system rack integrates various fire-fighting control equipment and sensors and is connected with a power supply. According to the invention, the amplitude of the power frequency electric field is changed by adjusting the output of the adjustable transformer, and the power frequency electric fields with different amplitudes are reflected by the signal reflecting cover and act on the fire fighting system rack in a concentrated manner. The fire-fighting system rack can form various energy storage fire-fighting systems through the fire-fighting control equipment and the sensors and test the immunity of the corresponding systems in power frequency electric fields with different amplitudes, so that the EMC rectification and rectification effect verification of the electromagnetic compatibility of the various energy storage fire-fighting systems can be realized subsequently according to the test result.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage systems, and in particular relates to an industrial frequency electric field testing system and a testing method suitable for an energy storage fire protection system. Background Art

[0002] In recent years, with the development of economy, environmental awareness has been paid more and more attention. Therefore, all countries are vigorously developing new energy. With the development of battery technology and automobile industry, automobile CTB and CTC technology have further improved the capacity and charging power of automobile batteries. New energy vehicles have ushered in rapid development. DC charging piles are the main medium for energy replenishment of new energy vehicles. The demand pressure on the charging side has increased sharply. In the process of charging piles, the voltage and current harmonics of the power grid will be affected to a certain extent, which will interfere with the electricity metering and make it difficult to ensure the reliability, safety and fairness of the power grid. Therefore, at this stage, improving and optimizing the negative impact of charging piles during the charging process has become an important task in the promotion of charging piles and the development of power grids.

[0003] With the rapid development of new battery energy storage systems, combustible gas detectors, temperature detectors, smoke detectors and other fire detectors are required to be installed in the battery room / cabin to ensure charging safety; at the same time, with the update of lithium battery technology, the battery heat dissipation method has been iterating, which has gradually improved the energy density of the system. It is bound to also require the energy density of PCS to be further improved to adapt to the energy density of the entire system. High-power PCS has gradually become the mainstream, which has also caused the electromagnetic field interference in the energy storage cabinet to become more serious.

[0004] In existing EMC tests (such as GB_T 17626 and IEC 61000-4), power frequency electric fields are not included as part of standard electromagnetic compatibility (EMC) tests. However, due to its usage characteristics, energy storage systems are in AC-DC, DC-DC and DC-AC energy conversion for a long time. When the system space is constantly in a changing electric field, induced current and voltage will be generated on its internal conductors, resulting in the following problems: On the one hand, the induced power frequency electric field causes instability in the internal circuit of the fire-fighting equipment, causing damage to the equipment; On the other hand, the industrial frequency electric field will introduce background noise, affecting the accuracy of the measurement results of fire-fighting equipment, resulting in inaccurate data and false fire alarms, which in turn will affect the use of the energy storage system and reduce its reliability.

[0005] However, most of the fire detector products on the market today follow the fire protection industry's gb16806 standard, and most manufacturers have not developed fire detectors specifically for the energy storage industry that are adapted to its electromagnetic environment.

[0006] There are no relevant standards for EMC interference of electromagnetic fields for fire protection products under the existing fire protection standards. The products lack electromagnetic field protection, and the related equipment has weak resistance to electromagnetic field interference. In addition, manufacturers cannot know the corresponding anti-interference level of the products. This causes the existing fire protection products to have inaccuracy in the energy storage system, false alarms, etc., which in turn affects the detection of fires. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide an industrial frequency electric field testing system and a testing method suitable for an energy storage fire protection system, so as to predict the anti-interference ability of fire protection equipment to the industrial frequency electric field in the actual environment of the energy storage system, thereby facilitating the subsequent verification of its rectification effect.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is: An industrial frequency electric field test system suitable for an energy storage fire protection system, comprising an adjustable transformer, a signal reflection cover, an AC-DC converter, a load and a fire protection system stand; 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 on one side 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 ability of the corresponding fire protection systems under power frequency electric fields of different amplitudes.

[0009] In order to solve the above technical problems, another technical solution adopted by the present invention is: A power frequency electric field testing method applicable to an energy storage fire fighting system, applied to the above-mentioned power frequency electric field testing system applicable to an energy storage fire fighting system, comprises 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 needs to withstand in the actual environment; S2. Based on the simulation results, the power frequency electric field test system is started and the adjustable transformer is adjusted to output power frequency electric fields of different amplitudes; S3, through the signal reflection cover arranged on the periphery of the adjustable transformer, the power frequency electric field with different amplitudes is reflected 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 anti-interference performance of the corresponding systems under power frequency electric fields of different amplitudes is tested through various energy storage fire protection systems; S5. According to the test results, carry out electromagnetic compatibility rectification on various energy storage fire protection systems and verify the rectification effect.

[0010] The beneficial effects of the present invention are as follows: a power frequency electric field test system and a test method suitable for an energy storage fire protection system are 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 bench constitutes the power frequency electric field test system, 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, and then 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 various integrated fire control devices and sensors, the anti-interference of the corresponding fire protection system under power frequency electric fields of different amplitudes is tested through various energy storage fire protection systems, so that it is convenient to subsequently realize the EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems and the verification of the rectification effect according to the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic 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 The present invention is a flowchart of an industrial 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] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0014] Please refer to Figure 1 , a power frequency electric field test system suitable for energy storage fire protection system, including an adjustable transformer, a signal reflection cover, an AC-DC converter, a load and a fire protection system 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 on one side 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 ability 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 composed of an adjustable transformer, a signal reflection cover, an AC-DC converter, a load and a fire protection system bench constitutes the industrial frequency electric field test system, 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 changes the amplitude of the industrial frequency electric field 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 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 anti-interference of the corresponding fire protection system under the industrial frequency electric fields of different amplitudes is tested through various energy storage fire protection systems, so that it is convenient to realize the EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems and the verification of the rectification effect according to the test results in the future.

[0016] Furthermore, the signal reflection cover is a reflection cover made of a single metal or alloy material.

[0017] From the above description, it can be seen that a signal reflection cover 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] Further, it 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.

[0019] From the above description, it can be known 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] From the above description, it can be seen that by adding a circuit breaker 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 bench, the circuit can be automatically cut off 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] From the above description, it can be seen that 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, so as to further ensure the safety of the electrical system and prevent 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] From the above description, it can be seen that by adding a fuse to the circuit connection between the adjustable transformer and the AC-DC converter, when the adjustable transformer is adjusted to change the output current to exceed the rated value of the AC-DC, the fuse will melt, thereby cutting off the circuit and further preventing problems caused by overload or short circuit.

[0026] Further, 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 rack.

[0027] From the above description, it can be seen that the PE grounding system can ground the non-live metal parts of electrical equipment, such as casings and frames, 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 a plurality of 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 that is regulated by the adjustable transformer and converted 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 use requirements, so as to verify the anti-interference ability of the corresponding fire protection system under power frequency electric fields of different amplitudes, and verify whether the increased 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 needs to withstand in the actual environment; S2. Based on the simulation results, the power frequency electric field test system is started and the adjustable transformer is adjusted to output power frequency electric fields of different amplitudes; S3, through the signal reflection cover arranged on the periphery of the adjustable transformer, the power frequency electric field with different amplitudes is reflected 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 anti-interference performance of the corresponding fire protection systems under power frequency electric fields of different amplitudes is tested through various fire protection systems; S5. According to the test results, carry out electromagnetic compatibility rectification on various energy storage fire protection systems and verify the rectification effect.

[0033] From the above description, it can be seen that the beneficial effects of the present invention are: based on the same technical concept, it is applied to the above-mentioned power frequency electric field test system suitable for energy storage fire protection system, and provides a power frequency electric field test method suitable for energy storage fire protection system. 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 constitutes a power frequency electric field test system, and 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, and then the signal reflection cover arranged on the periphery of the adjustable transformer reflects the power frequency electric fields of different amplitudes and acts on the fire protection system stand in a concentrated manner, 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 anti-interference of the corresponding fire protection system under power frequency electric fields of different amplitudes is tested through various energy storage fire protection systems, so that it is convenient to realize the EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems and the verification of the rectification effect according to the test results in the future.

[0034] The present invention provides a power frequency electric field testing system and a testing method for an energy storage fire fighting system, which is suitable for discovering the tolerance of the corresponding energy storage fire fighting system equipment to the power frequency electric field in advance at the early stage of the design of the energy storage fire fighting system, and then optimizing the equipment selection. The following is a specific description in combination with a specific embodiment: 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 provided on one side so that the adjustable transformer 1 faces the fire protection system stand 5, and the signal reflection cover 2 is used to reflect the industrial frequency electric field adjusted and output by the adjustable transformer 1, so that the industrial 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, and the various fire control equipment and sensors are used to form various energy storage fire protection systems to test the anti-interference of the corresponding fire protection systems under industrial frequency electric fields of different amplitudes.

[0036] That is, in this embodiment, the power frequency electric field test bench composed of the adjustable transformer 1, the signal reflection cover 2, the AC-DC converter 3, the load 4 and the fire protection system bench 5 constitutes the power frequency electric field test system, and the adjustable transformer 1 converts the power supply current output into a stable DC voltage through the AC-DC converter 3 for subsequent use by the load 4, thereby consuming the energy of the transformer. During the operation of the transformer, due to the existence of high voltage, the high-voltage output line will generate a changing electric field in the surrounding space when transmitting current. By utilizing the characteristic that the electric field strength is proportional to the voltage, the amplitude of the power frequency electric field can be changed by adjusting the output of the adjustable transformer 1, and then the signal reflection cover 2 set on the outer periphery of the adjustable transformer 1 reflects the power frequency electric field of different amplitudes and acts on the fire protection system bench 5, so that after the fire protection system bench 5 forms various energy storage fire protection systems through the integrated various fire control equipment and sensors, the anti-interference of the corresponding fire protection system under the power frequency electric field of different amplitudes can be tested through various energy storage fire protection systems, so that it is convenient to realize the EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems and the verification of the rectification effect according to 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 a plurality of electronic DC loads 4 of different powers, which are 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 that 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 with different powers 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 rack 5.

[0042] That is, the PE grounding system 9 can ground the non-charged 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 earth 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 earth 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, and the signal reflection cover 2 is the same; and the PE grounding system 9 can be used to test the influence 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 , Embodiment 2 of the present invention is: A power frequency electric field test system suitable for an energy storage fire fighting system, based on the above-mentioned 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 to which the fire protection system stand 5 is currently subjected, so as to 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, a circuit breaker 7 is also included. The circuit breaker 7 is arranged 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 there is excessive current, overload, short circuit, etc. in the power frequency electric field test bench, the circuit can be automatically cut off to prevent equipment damage or fire. In this embodiment, the circuit breaker 7 adopts a 2P+PE leakage circuit breaker 7 as a protection device for detecting and cutting off leakage current or overload in the system circuit, so as to further ensure the safety of the electrical system and prevent electric shock accidents and electrical fires caused by leakage and overload.

[0046] In addition, Figure 1 As shown, a fuse 8 is also 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 adjustable transformer 1 is adjusted to change the output current to exceed the rated value of the AC-DC, the fuse will blow, thereby cutting off the circuit and further preventing problems caused by overload or short circuit.

[0048] Please refer to Figure 2 , Embodiment 3 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 industrial 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, the power frequency electric field test system is started and the adjustable transformer is adjusted 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 field of different amplitudes is reflected to the fire protection system stand.

[0051] S4. Various types of energy storage fire protection systems are composed of a variety of fire control equipment and sensors integrated in the fire protection system test bench, and the anti-interference performance of the corresponding fire protection systems under different amplitude power frequency electric fields is tested through various fire protection system tests.

[0052] S5. According to the test results, carry out 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 test system applicable to an energy storage fire protection system in the above-mentioned embodiment 1 or embodiment 2 is applied to provide a power frequency electric field test method applicable to an energy storage fire protection system. 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 bench constitutes a power frequency electric field test system. 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 changes the amplitude of the power frequency electric field by adjusting the output of the adjustable transformer. The signal reflection cover arranged on the periphery of the adjustable transformer reflects the power frequency electric fields of different amplitudes and acts on the fire protection system bench in a concentrated manner, so that after the fire protection system bench is composed of various energy storage fire protection systems through various integrated fire control devices and sensors, the anti-interference of the corresponding fire protection system under power frequency electric fields of different amplitudes is tested through various energy storage fire protection systems, so that it is convenient to realize the EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems and the verification of the rectification effect according to the test results in the future.

[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, conductor, insulation material, etc.

[0055] 2. Set material properties: Set material properties and assign appropriate material properties to each part of the model. For example, you can choose copper or aluminum for conductors, air or plastic for insulation materials; or customize materials: For special materials, you can enter their physical parameters (such as relative dielectric constant, conductivity, etc.).

[0056] 3. Apply boundary conditions: According to the actual situation, apply the corresponding voltage or current source to the conductor. Boundary conditions such as infinite boundary, symmetric boundary, etc. can be set to simplify the calculation.

[0057] 4. Meshing: Automatic meshing function ensures the accuracy and computational efficiency of the model. If necessary, the mesh density can be manually adjusted, especially in key 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 criterion, 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 for verification in the power frequency electric field test bench.

[0062] Among them, in step S5, according to the test results, various energy storage fire protection systems are rectified for electromagnetic compatibility (EMC), and the rectification effect is verified. Specifically, electromagnetic protection can be added to the fire protection system stand and the effectiveness of electromagnetic protection can be verified. For example: The fire protection system can be restored and built in the test bench according to the fire protection system application in the actual project of the fire protection engineer to verify the overall anti-interference ability of the actual fire protection system. If an EMC failure occurs, the corresponding failed components or wiring harnesses can be rectified in the fire protection system test bench. The test bench can verify the improvement effect of the corresponding improvement measures, for example: (1) Adding a shielding cover to the failed device can 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 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] By using the industrial frequency electric field test bench, verification can be performed without relying on the actual system, reducing verification costs and time and improving design efficiency.

[0064] In summary, the power frequency electric field testing system and testing method for energy storage fire protection system provided by the present invention have 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 the energy storage fire protection system design, and the equipment selection can be optimized; 2. If the energy storage fire protection system is found to have insufficient anti-interference ability during the test, EMC rectification can be carried out and quickly verified, which effectively avoids the fire control equipment and sensors being interfered with by electromagnetic fields in the energy storage system, resulting in measurement errors, false alarms, etc., affecting the operation of the fire protection system and wasting 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 specification 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 test system suitable for energy storage fire protection system, characterized in that: Includes adjustable transformer, signal reflector, AC-DC converter, load and fire protection system stand; 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 on one side 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 ability of the corresponding fire protection systems under power frequency electric fields of different amplitudes.

2. The power frequency electric field testing system suitable for energy storage fire protection system according to claim 1, characterized in that: The signal reflection cover is a reflection cover made of a single metal or alloy material.

3. The power frequency electric field testing system suitable for energy storage fire protection system according to claim 1, characterized in that: Also included is 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.

4. The power frequency electric field testing system suitable for energy storage fire protection system according to claim 1, characterized in that: Also includes circuit breakers; 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.

5. The power frequency electric field testing system suitable for energy storage fire protection system according to claim 4, characterized in that: The circuit breaker is a 2P+PE leakage circuit breaker.

6. The power frequency electric field testing system suitable for energy storage fire protection system according to claim 1, characterized in that: Also includes fuses; The fuse is disposed between the adjustable transformer and the circuit connection of the AC-DC converter.

7. The power frequency electric field testing system suitable for energy storage fire protection system according to claim 1, characterized in that: It also includes the 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 rack.

8. The power frequency electric field testing system suitable for energy storage fire protection system according to claim 1, characterized in that: The loads are electronic DC loads of various powers, which are used to continuously consume the DC power that is regulated by the adjustable transformer and converted by the AC-DC converter.

9. The power frequency electric field testing system suitable for energy storage fire fighting 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.

10. A power frequency electric field testing method applicable to an energy storage fire fighting system, applied to a power frequency electric field testing system applicable to an energy storage fire fighting system as claimed in any one of claims 1 to 9, characterized in that: Includes 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; S2. Based on the simulation results, the power frequency electric field test system is started and the adjustable transformer is adjusted to output power frequency electric fields of different amplitudes; S3, through the signal reflection cover arranged on the periphery of the adjustable transformer, the power frequency electric field with different amplitudes is reflected to the fire protection system stand; S4. Various fire control devices and sensors integrated in the fire protection system stand are used to form various energy storage fire protection systems, and the anti-interference performance of the corresponding fire protection systems under power frequency electric fields of different amplitudes is tested through various energy storage fire protection systems; S5. According to the test results, carry out electromagnetic compatibility rectification on various energy storage fire protection systems and verify the rectification effect.

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