A power frequency electric field test system and test method applicable to an energy storage fire protection system

Abstract

The present invention provides a power frequency electric field test system and a test method applicable to an 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 outside the adjustable transformer and has an opening to make the adjustable transformer face the fire protection system bench; the fire protection system bench integrates various fire control devices and sensors and is connected to the power supply. By adjusting the output of the adjustable transformer, the present invention changes the amplitude of the power frequency electric field, and the signal reflection cover reflects the power frequency electric fields with different amplitudes and focuses them on the fire protection system bench, so that the fire protection system bench can form various energy storage fire protection systems through the fire control devices and sensors and test the immunity of the corresponding systems under power frequency electric fields with different amplitudes, facilitating subsequent EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems according to the test results and verification of the rectification effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage systems, and particularly relates to a power frequency electric field test system and a test method applicable to an energy storage fire protection system. Background Art

[0002] In recent years, with the development of the economy, environmental protection awareness has been increasingly emphasized. Therefore, all countries are vigorously developing new energy. With the development of battery technology and the automotive industry, automotive CTB and CTC technologies have further improved the battery capacity and charging power of automobiles. New energy vehicles have witnessed rapid development. As the main medium for energy supply to new energy vehicles, DC charging piles have seen a sharp increase in demand pressure on the charging side. During the charging process of charging piles, grid voltage, current harmonics, etc. will all be affected to a certain extent, which in turn interferes with power metering and makes it difficult to ensure the reliability, safety, and fairness of the power grid. Therefore, at the present stage, improving and optimizing the negative impacts generated during the charging process of charging piles has become an important task in the promotion of charging piles and the development of the power grid.

[0003] With the rapid development of new battery energy storage systems, it is required to install fire detectors such as combustible gas detectors, temperature sensors, and smoke sensors in battery rooms / cabinets to ensure charging safety. At the same time, with the update of lithium battery technology, the battery heat dissipation method has been continuously iterated, gradually increasing the system energy density. It is also bound to require a further increase in the energy density of the PCS to adapt to the overall system energy density. High-power PCS has gradually become the mainstream, which has also caused increasingly serious electromagnetic field interference in energy storage cabinets.

[0004] In existing EMC tests (such as GB_T 17626 and IEC 61000-4), power frequency electric field is not included as part of the standard electromagnetic compatibility (EMC) test. However, due to its operating characteristics, the energy storage system is constantly in the process of AC-DC, DC-DC, and DC-AC energy conversion, resulting in a constantly changing electric field in its system space. This will generate induced current and voltage on its internal conductors, thus presenting the following problems:

[0005] On the one hand, the induced power frequency electric field causes instability in the internal circuits of fire protection equipment, leading to equipment damage.

[0006] On the other hand, the power frequency electric field will introduce background noise, affecting the accuracy of the measurement results of fire protection equipment, resulting in inaccurate data, causing false alarms in fire protection, and further affecting the use of the energy storage system and reducing its reliability.

[0007] However, most of the current fire detector products on the market follow the gb16806 standard in the fire protection industry, and most manufacturers have not specifically developed fire detectors suitable for the electromagnetic environment of the energy storage industry.

[0008] Under the existing fire protection standards, there are no relevant standards for the EMC interference of fire protection products against electromagnetic fields. The products lack electromagnetic field protection, the relevant equipment has weak resistance to electromagnetic field interference, and the using manufacturers cannot know the corresponding immunity of the products. This causes the existing fire protection products to have inaccurate accuracy and false alarms in the energy storage system, thereby affecting the detection of fires. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a power frequency electric field test system and test method applicable to an energy storage fire protection system to predict the immunity ability of fire protection equipment to power frequency electric fields in the actual environment of the energy storage system, so as to facilitate subsequent verification of its rectification effect.

[0010] To solve the above technical problems, the technical solution adopted by the present invention is:

[0011] A power frequency electric field test system applicable to an energy storage fire protection system includes an adjustable transformer, a signal reflection cover, an AC-DC converter, a load, and a fire protection system bench;

[0012] The load, the AC-DC converter, the adjustable transformer, and the power supply are connected in sequence;

[0013] The signal reflection cover is arranged around the adjustable transformer and has an opening to make the adjustable transformer face the fire protection system bench. 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 bench;

[0014] The fire protection system bench integrates a variety of fire control devices and sensors and is connected to the power supply. The variety of fire control devices and sensors are used to form various energy storage fire protection systems to test the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes.

[0015] To solve the above technical problems, another technical solution adopted by the present invention is:

[0016] A power frequency electric field test method applicable to an energy storage fire protection system, which is applied to the above-mentioned power frequency electric field test system applicable to an energy storage fire protection system, includes the steps of:

[0017] S1. Pre-use electromagnetic simulation software for simulation analysis to predict the power frequency electric field intensity that the energy storage fire protection system needs to withstand in the actual environment;

[0018] 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;

[0019] S3. Through the signal reflection cover arranged around the adjustable transformer, reflect power frequency electric fields of different amplitudes and act on the fire protection system bench;

[0020] S4. Composing various energy storage fire protection systems with a variety of fire control devices and sensors integrated in the fire protection system test bench, and testing the immunity of the corresponding systems under power frequency electric fields with different amplitudes through various energy storage fire protection systems;

[0021] S5. According to the test results, rectifying the electromagnetic compatibility of various energy storage fire protection systems and verifying the rectification effect.

[0022] The beneficial effects of the present invention are as follows: providing a power frequency electric field test system and test method applicable to energy storage fire protection systems, forming a power frequency electric field test system with a 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 test bench. The adjustable transformer converts the output of the power supply current through the AC-DC converter into direct current available for the load, and changes the amplitude of the power frequency electric field by adjusting the output of the adjustable transformer. Then, the signal reflection cover covering the periphery of the adjustable transformer reflects different amplitudes of the power frequency electric field and focuses it on the fire protection system test bench, so that after the fire protection system test bench forms various energy storage fire protection systems through various integrated fire control devices and sensors, the immunity of the corresponding fire protection systems under power frequency electric fields with different amplitudes can be tested through various energy storage fire protection systems, thus facilitating subsequent EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems and verification of the rectification effect according to the test results. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of a power frequency electric field test system applicable to energy storage fire protection systems according to an embodiment of the present invention;

[0024] Figure 2 It is a flowchart of a power frequency electric field test method applicable to energy storage fire protection systems according to an embodiment of the present invention.

[0025] Label Description:

[0026] 1. Adjustable transformer; 2. Signal reflection cover; 3. AC-DC converter; 4. Load; 5. Fire protection system test bench; 6. Radiometer; 7. Circuit breaker; 8. Fuse; 9. PE grounding system. Specific Embodiments

[0027] To describe the technical content, achieved objectives and effects of the present invention in detail, the following is described in conjunction with the embodiments and with reference to the drawings.

[0028] Please refer to Figure 1 , a power frequency electric field test system applicable to 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;

[0029] The load, the AC-DC converter, the adjustable transformer and the power supply are connected in sequence;

[0030] The signal reflection cover is arranged around the adjustable transformer, and an opening is provided on one side to make the adjustable transformer face the fire protection system bench. 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 bench;

[0031] The fire protection system bench integrates a variety of fire control devices and sensors and is connected to the power supply. A variety of the fire control devices and sensors are used to form various energy storage fire protection systems to test the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes.

[0032] As can be seen from the above description, the beneficial effect of the present invention is: to provide a power frequency electric field test system applicable to an energy storage fire protection system, which is composed of a power frequency electric field test bench formed by an adjustable transformer, a signal reflection cover, an AC-DC converter, a load and a fire protection system bench to form a power frequency electric field test system. The adjustable transformer outputs the power supply current and converts it into direct current available for 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. Then, the signal reflection cover arranged around 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 forms various energy storage fire protection systems through various integrated fire control devices and sensors, the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes can be tested through various energy storage fire protection systems, thereby facilitating the subsequent 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.

[0033] Further, the signal reflection cover is a reflection cover made of a single metal or alloy material.

[0034] As can be seen from the above description, using a signal reflection cover made of a single metal or alloy material to wrap the adjustable transformer enables the power frequency electric field generated by the transformer to be effectively concentrated and reflected into the fire protection system bench.

[0035] Further, it further includes a radiometer;

[0036] The radiometer is arranged beside the fire protection system bench and is used to measure the power frequency electric field radiation received by the fire protection system bench.

[0037] As can be seen from the above description, adding a radiometer is used to detect the power frequency electric field intensity received by the current fire protection system bench, providing data support for adjusting the adjustable transformer to adjust the power frequency electric field intensity.

[0038] Further, it further includes a circuit breaker;

[0039] The circuit breaker is provided between the circuit connection of the adjustable transformer and the power supply, and between the circuit connection of the fire protection system bench and the power supply.

[0040] As can be seen from the above description, adding a circuit breaker between the circuit connection of the power supply and the adjustable transformer and between the circuit connection of the power supply and the fire protection system bench can automatically cut off the circuit when there are situations such as excessive current, overload, and short circuit in the power frequency electric field test bench, preventing equipment damage or fire.

[0041] Further, the circuit breaker is a 2P+PE leakage circuit breaker.

[0042] As can be seen from the above description, a 2P+PE leakage circuit breaker is used as a protection device to detect and cut off the leakage current or overload in the system circuit, to further ensure the safety of the electrical system and prevent electric shock accidents and electrical fires caused by leakage and overload.

[0043] Further, a fuse is also included;

[0044] The fuse is provided between the circuit connection of the adjustable transformer and the AC-DC converter.

[0045] 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 blow when the adjusted output current of the adjustable transformer exceeds the rated value of the AC-DC, thus cutting off the circuit and further preventing problems caused by overload or short circuit.

[0046] Further, a PE grounding system is also included;

[0047] The PE grounding system is used to ground the non-electrified metal parts of the electrical equipment in the fire protection system bench.

[0048] As can be seen from the above description, the PE grounding system can ground the non-electrified metal parts in the electrical equipment, such as the shell, frame, etc., ensuring that the current can flow safely into the ground when a fault occurs in the system, thus avoiding electric shock accidents and protecting personnel and equipment from electric shock hazards. Moreover, while ensuring electrical safety, the PE grounding system can also be used to test the influence of the grounding state of the fire protection system bench on the power frequency electric field immunity.

[0049] Further, the load is a variety of electronic DC loads with different powers, which are used to continuously consume the direct current after the adjustable transformer adjusts the voltage and is converted by the AC-DC converter.

[0050] As described above, the load is used to continuously consume the direct current after voltage regulation by the adjustable transformer and conversion by the AC-DC converter, ensuring that the adjustable transformer can continuously generate a power frequency electric field for testing. At the same time, electronic DC loads with different powers can also adjust the power to further control the power frequency electric field intensity, and cooperate with the adjustable transformer to better control power frequency electric field intensities of different magnitudes.

[0051] Further, the fire control equipment and sensors include a fire alarm controller, a smoke detector, a temperature detector, a combustible gas detector, and a flame detector.

[0052] As described above, the fire protection system bench can freely combine various fire control equipment and sensors according to actual usage requirements to form corresponding fire protection systems, so as to verify the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes, and verify whether the increased electromagnetic protection is effective.

[0053] Please refer to Figure 2 , which is applied to a power frequency electric field test system suitable for an energy storage fire protection system, including the steps:

[0054] S1. Use electromagnetic simulation software for simulation analysis in advance to predict the power frequency electric field intensity that the energy storage fire protection system needs to withstand in the actual environment;

[0055] 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;

[0056] S3. Through the signal reflection cover arranged around the adjustable transformer, reflect power frequency electric fields of different amplitudes to act on the fire protection system bench;

[0057] S4. Use various fire control equipment and sensors integrated in the fire protection system bench to form various energy storage fire protection systems, and test the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes through various fire protection systems;

[0058] S5. According to the test results, conduct electromagnetic compatibility rectification on various energy storage fire protection systems and verify the rectification effect.

[0059] As can be seen from the above description, the beneficial effects of the present invention are as follows: 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. The power frequency electric field test system is composed of a 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. The adjustable transformer converts the output of the power supply current through the AC-DC converter into direct current available for the load, and changes the amplitude of the power frequency electric field by adjusting the output of the adjustable transformer. Then, the signal reflection cover covering the periphery of the adjustable transformer reflects and concentrates the power frequency electric fields of different amplitudes on the fire protection system bench. So that after the fire protection system bench forms various energy storage fire protection systems through various integrated fire control devices and sensors, the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes can be tested through various energy storage fire protection systems, thereby facilitating subsequent EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems according to the test results and verification of the rectification effect.

[0060] The power frequency electric field test system and test method for energy storage fire protection systems provided by the present invention are applicable to the scenario of discovering in advance the tolerance of the corresponding energy storage fire protection system equipment to the power frequency electric field during the initial design stage of the energy storage fire protection system, and then optimizing the equipment selection. The following is a specific description with specific embodiments:

[0061] Please refer to Figure 1 , Embodiment 1 of the present invention is as follows:

[0062] A power frequency electric field test system for energy storage fire protection systems, as Figure 1 shown, includes an adjustable transformer 1, a signal reflection cover 2, an AC-DC converter 3, a load 4, and a fire protection system bench 5.

[0063] 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 covers the periphery of the adjustable transformer 1 and has an opening on one side to make the adjustable transformer 1 face the fire protection system bench 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 bench 5; the fire protection system bench 5 integrates a variety of fire control devices and sensors and is connected to the power supply. The variety of fire control devices and sensors are used to form various energy storage fire protection systems to test the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes.

[0064] 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. The adjustable transformer 1 outputs the power supply current, which is rectified and filtered by the AC-DC converter 3 and converted into a stable DC voltage 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, when the high-voltage output power line transmits current, a changing electric field will be generated in the surrounding space. Utilizing the characteristic that the electric field intensity 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. Then, the signal reflection cover 2 covering the periphery of the adjustable transformer 1 reflects the power frequency electric fields of different amplitudes and concentrates them on the fire protection system bench 5. So that after the fire protection system bench 5 forms various energy storage fire protection systems through various integrated fire control devices and sensors, the immunity of the corresponding fire protection systems under power frequency electric fields of different amplitudes can be tested through various energy storage fire protection systems, thereby facilitating subsequent EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems and verification of the rectification effect according to the test results.

[0065] In this embodiment, the signal reflection cover 2 is a reflection cover made of a single metal or alloy material.

[0066] That is, the 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 bench 5.

[0067] At the same time, the load 4 is a variety of electronic DC loads 4 with different powers, which are used to continuously consume the direct current after the adjustable transformer 1 adjusts the voltage and is converted by the AC-DC converter 3.

[0068] That is, the load 4 is used to continuously consume the direct current after the adjustable transformer 1 adjusts the voltage and is converted by the AC-DC converter 3, ensuring that the adjustable transformer 1 can continuously generate a power frequency electric field for testing. At the same time, the electronic DC loads 4 with different powers can also adjust the power to further control the power frequency electric field intensity, and cooperate with the adjustable transformer 1 to better control the power frequency electric field intensity of different magnitudes.

[0069] In addition, in this embodiment, as another example Figure 1 As shown, it also includes a PE grounding system 9, where the PE grounding system 9 is used to ground the non-powered metal parts of the electrical equipment in the fire protection system bench 5.

[0070] That is, the PE grounding system 9 can ground the non - energized metal parts of the electrical equipment used in the fire protection system rack, such as the shell, frame, etc., ensuring that when a fault occurs in the system, the current can flow safely into the ground, thus avoiding electric shock accidents and protecting personnel and equipment from electric shock hazards. In this embodiment, if there is a metal shielding cover used in the equipment in the fire protection system rack 5, the induced charges generated by the external electric field on the shielding cover can quickly flow into the ground through the ground wire, thus avoiding the accumulation of charges on the shielding cover and preventing the equipment inside the shielding cover from being affected by the external electric field. The signal reflection cover 2 is the same; and while ensuring electrical safety, the PE grounding system 9 can also be used to test the influence of the grounding state of the fire protection system rack 5 on the immunity to power frequency electric field.

[0071] Please refer to Figure 1 , the second embodiment of the present invention is as follows:

[0072] A power frequency electric field test system applicable to an energy storage fire protection system. On the basis of the above - mentioned first embodiment, in this embodiment, as Figure 1 shown, it further includes a radiometer 6. The radiometer 6 is arranged beside the fire protection system rack 5 and is used to measure the power frequency electric field radiation received by the fire protection system rack 5.

[0073] That is, in this embodiment, the radiometer 6 is added to detect the power frequency electric field intensity received by the current fire protection system rack 5, providing data support for adjusting the adjustable transformer 1 to adjust the power frequency electric field intensity.

[0074] At the same time, as Figure 1 shown, it further includes a circuit breaker 7. 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 rack 5 and the power supply. When there are situations such as excessive current, overload, short - circuit, etc. in the power frequency electric field test rack, it can automatically cut off the circuit to prevent equipment damage or fire; and in this embodiment, the circuit breaker 7 uses a 2P + PE leakage circuit breaker 7 as a protection device for detecting and cutting off the leakage current or overload in the system circuit to further ensure the safety of the electrical system and prevent electric shock accidents and electrical fires caused by leakage and overload.

[0075] In addition, as Figure 1 shown, it further includes a fuse 8, and the fuse 8 is arranged between the circuit connection of the adjustable transformer 1 and the AC - DC converter 3.

[0076] That is, the fuse 8 is added to the circuit connection between the adjustable transformer 1 and the AC - DC converter 3. When the current output by adjusting the adjustable transformer 1 exceeds the rated value of the AC - DC, it will blow, thus cutting off the circuit and further preventing problems caused by overload or short - circuit.

[0077] Please refer to Figure 2 , the third embodiment of the present invention is as follows:

[0078] A power frequency electric field test method applicable to an energy storage fire protection system, comprising the steps of:

[0079] S1. First, perform simulation analysis using electromagnetic simulation software to predict the power frequency electric field intensity that the energy storage fire protection system needs to withstand in the actual environment.

[0080] S2. Based on the simulation results, start the power frequency electric field test system and adjust the output of the adjustable transformer to output power frequency electric fields with different amplitudes.

[0081] S3. Through the signal reflection cover arranged outside the adjustable transformer, reflect power frequency electric fields with different amplitudes and act on the fire protection system test bench.

[0082] S4. Use various fire control devices and sensors integrated in the fire protection system test bench to form various energy storage fire protection systems, and test the immunity of the corresponding fire protection systems under power frequency electric fields with different amplitudes through various fire protection systems.

[0083] S5. According to the test results, perform electromagnetic compatibility rectification on various energy storage fire protection systems and verify the rectification effect.

[0084] That is, in this embodiment, based on the same technical concept, a power frequency electric field test system applicable to the energy storage fire protection system in the above-mentioned Embodiment 1 or Embodiment 2 provides a power frequency electric field test method applicable to the energy storage fire protection system. The power frequency electric field test system is composed of a power frequency electric field test bench formed by an adjustable transformer, a signal reflection cover, an AC-DC converter, a load, and a fire protection system test bench. The adjustable transformer converts the output of the power supply current into direct current available for 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. Then, the signal reflection cover arranged outside the adjustable transformer reflects power frequency electric fields with different amplitudes and concentrates them on the fire protection system test bench, so that after the fire protection system test bench forms various energy storage fire protection systems through various integrated fire control devices and sensors, the immunity of the corresponding fire protection systems under power frequency electric fields with different amplitudes can be tested through various energy storage fire protection systems, thereby facilitating subsequent EMC rectification of the electromagnetic compatibility of various energy storage fire protection systems and verification of the rectification effect according to the test results.

[0085] Among them, in this embodiment, the specific steps to improve the simulation analysis using electromagnetic simulation software in step S1 are as follows:

[0086] 1. Establish a geometric model: Use CATIA to establish a geometric model of the actual system, including power supply, conductors, insulating materials, etc.

[0087] 2. Set material properties: Set the material properties and assign appropriate material properties to each part of the model. For example, copper or aluminum can be selected for conductors, and air or plastic can be selected for insulating materials; or customize materials: for special materials, their physical parameters (such as relative permittivity, conductivity, etc.) can be input.

[0088] 3. Apply boundary conditions: According to the actual situation, apply corresponding voltage or current sources to the conductors. Boundary conditions such as infinite far boundary, symmetric boundary, etc. can be set to simplify the calculation.

[0089] 4. Mesh generation: The automatic mesh generation function ensures the accuracy and calculation efficiency of the model. When necessary, the mesh density can be manually adjusted, especially in key areas (such as near the conductors) to improve the accuracy.

[0090] 5. Solver settings: Select an appropriate solver according to the type of problem (such as static solver, transient solver, etc.).

[0091] 6. Set solver parameters: Configure solver parameters such as time step, convergence criterion, etc.

[0092] 7. Run the simulation: Run the simulation program and observe the simulation progress bar and log information to ensure the smooth progress of the simulation.

[0093] 8. Post - processing and result analysis: After the simulation is completed, results such as electric field strength and potential distribution can be viewed through visualization tools, and verified in the power frequency electric field test bench in combination with the simulation results.

[0094] Among them, in step S5, according to the test results, electromagnetic compatibility EMC rectification is carried out on various energy storage fire protection systems, and the rectification effect is verified. Specifically, electromagnetic protection can be added to the fire protection system bench and whether the electromagnetic protection is effective can be verified. For example:

[0095] The fire protection system can be restored and built on the bench according to the application of the fire protection system in the actual project of the fire protection engineer to verify the overall anti - interference ability of the actual fire protection system. When the EMC failure state occurs, rectification can be carried out on the corresponding failed devices or wiring harnesses in the fire protection system bench. Among them, the bench can verify the improvement effect of the corresponding improvement measures. For example:

[0096] (1) Add a shielding cover to the failed device, which can effectively reflect and absorb the electric field;

[0097] (2) If the shielding cover fails, the shielding material can be changed, a highly conductive metal material can be used to increase the anti - interference effect, or the structure of the shielding cover can be increased to improve the anti - interference effect;

[0098] (3) Use shielded cables instead of ordinary cables to reduce the power frequency electric field coupled by the cables and conduct the interference into the connected devices;

[0099] (4)The position of the fire protection system bench (distance from the pressure regulator) can be changed according to the layout adjusted by the equipment on the project to weaken the interference of the power frequency electric field;

[0100] (5)If the above rectification measures fail, the failed device can be reselected and verified again on the total fire protection system bench.

[0101] Using the power frequency electric field test bench, verification can be carried out without relying on the actual system, reducing the verification cost and time and improving the design efficiency.

[0102] In summary, a power frequency electric field test system and test method for an energy storage fire protection system provided by the present invention have the following beneficial effects:

[0103] 1. It can detect in advance the tolerance of the corresponding energy storage fire protection system equipment to the power frequency electric field at the initial stage of the energy storage fire protection system design, and optimize the equipment selection;

[0104] 2. If it is found that the immunity of the energy storage fire protection system is insufficient during the test, EMC rectification can be carried out on it and quickly verified, effectively avoiding problems such as measurement errors and false alarms caused by the electromagnetic field interference of the fire control equipment and sensors in the energy storage system, affecting the operation of the fire protection system and wasting human resources.

[0105] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, shall be included in the patent protection scope of the present invention by the same token.

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 in a concentrated manner; 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; The signal reflection cover is a reflection cover made of a single metal or alloy material.

2. 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.

3. 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.

4. The power frequency electric field testing system suitable for energy storage fire protection system according to claim 3, characterized in that: The circuit breaker is a 2P+PE leakage circuit breaker.

5. 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.

6. 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.

7. 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.

8. The power frequency electric field testing system suitable for 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.

9. 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 8, 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, by means of a signal reflection cover arranged on the periphery of the adjustable transformer, the power frequency electric fields of different amplitudes are reflected and concentrated on the fire protection system stand, wherein the signal reflection cover is a reflection cover made of a single metal or alloy; 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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