Reactive compensation measurement system for distributed power transformation

Abstract

The invention, which relates to the technical field of transformer measurement, discloses a reactive compensation measurement system for a distributed electric power transformation, comprising a data acquisition module, a data analysis module, an electric power compensation module and an early warning module. The data acquisition module is used for measuring circuit current in transformers of different lines, temperature around the transformers and vibration data of the transformers, and transmitting the data measured by the data acquisition module to the data analysis module. Then, the state of the transformer is obtained through a data analysis module, a corresponding compensation strategy of the transformer in the reactive state is generated according to the analyzed state of the transformer, and execution is carried out through a power compensation module according to the compensation strategy; and therefore, the reactive data in different distributed power transformers can be subjected to optimal adjustment and compensation subsequently.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer measurement, and in particular to a reactive compensation measurement system for distributed power transformer. Background Art

[0002] With the continuous development of power systems, the proportion of distributed power generation in power supply has gradually increased. Distributed power transformation systems, as a key link in power transmission and distribution, face many technical challenges. During the operation of the power system, the balance of reactive power is crucial to ensuring power quality. Traditional centralized reactive power compensation methods have gradually exposed their limitations in distributed power systems. Distributed power transformation systems are decentralized and complex, and the load conditions of transformers on different lines vary greatly, resulting in large differences in reactive power demand. However, the existing reactive power compensation measurement system cannot measure according to the different distribution of transformers, resulting in no way to adjust and optimize the capacitor according to the status of the transformer, making the subsequent reactive power compensation effect poor. To this end, we propose a reactive power compensation measurement system for distributed power transformers. Summary of the Invention

[0003] The object of the present invention is to provide a reactive power compensation measurement system for distributed power transformation.

[0004] To achieve the above object, the present invention provides the following technical solutions: a reactive power compensation measurement system for distributed power transformation, the measurement system comprising a data acquisition module, a data analysis module, a power compensation module and an early warning module; The data acquisition module is used to measure the circuit current, the temperature around the transformer and the vibration data of the transformer in different routes, and transmit the data measured by the data acquisition module to the data analysis module; The data analysis module is used to analyze the data collected by the data acquisition module, analyze the current data based on the collected data, determine whether the current in the transformers of different routes needs reactive power compensation, analyze the circuit status data in the transformer based on the temperature, humidity and vibration data around the transformer, and transmit the circuit status data to the power compensation module; The power compensation module adjusts the current according to the circuit status data in different transformers; The early warning module issues early warnings to different transformers when the power compensation module is unable to perform compensation.

[0005] As a further solution of the present invention: the data acquisition module includes a current transformer, which uses the current transformer to convert the collected current into current data, and then transmits the current data to the data analysis module. The data analysis module generates compensation strategies for different transformers based on the current data.

[0006] As a further solution of the present invention: the data acquisition module includes a temperature sensor and a vibration sensor, and the temperature sensor is used to collect temperature impact data of the reactive compensation equipment in the transformer on the transformer, and the vibration sensor is used to obtain electromagnetic force data around the reactive compensation equipment. The collected temperature impact data and electromagnetic force data of the reactive compensation equipment are then transmitted to the data analysis module. The data analysis module analyzes the performance data of the transformer based on the temperature impact data and the electromagnetic force data, and uses the performance data to optimize the compensation strategy data.

[0007] As a further solution of the present invention: the data analysis module includes a power compensation storage unit, a power compensation optimization unit and a power compensation decision unit. The power compensation storage unit is used to store compensation strategies corresponding to different current interval values. The data collected by the data acquisition module is matched with the interval value in the power compensation storage unit, and the compensation strategy of the corresponding interval is retrieved after the matching is successful. The power compensation optimization unit analyzes the performance data based on the collected temperature and vibration data, and uses the performance data to predict the actual compensation status data of reactive compensation. The power compensation decision unit adjusts the composition data of the capacitor according to the actual compensation status data.

[0008] As a further solution of the present invention, the power compensation optimization unit obtains the actual compensation state data of the reactive state transformer through a formula, and the specific formula is as follows: ; in, Indicates the actual compensation status data of the transformer, Indicates reactive power data affected by temperature, Indicates the power loss data caused by leakage current, Indicates the performance impact data of the transformer.

[0009] As a further solution of the present invention: the power compensation decision unit optimizes the decision strategy matched in the power compensation storage unit according to the actual compensation state data, and then adjusts the power compensation data in different transformers.

[0010] As a further solution of the present invention: the power compensation module is used to control the composition of capacitors in different transformers, thereby compensating the current data in the transformers.

[0011] As a further solution of the present invention: the early warning module includes a harmonic analyzer, which is used to detect damaged capacitors in different transformers, set a compensation threshold in the early warning module, obtain the initial reactive power compensation data of the transformer, analyze the number of capacitor components required for the initial reactive power compensation data, and set a compensation threshold based on the number of capacitor components required for the initial reactive power compensation data. When the damage to the capacitor affects the number of capacitor components required by the initial reactive power compensation data to 200%, the early warning module performs a first-level early warning, using the first-level early warning to remind personnel to repair the capacitor. When the damage to the capacitor affects the number of capacitor components required by the initial reactive power compensation data to 150%, the early warning module performs a second-level early warning, using the second-level early warning to detect the transformer and replace the capacitor. When the damage to the capacitor affects the number of capacitor components required by the initial reactive power compensation data to 120%, the current transformer is stopped.

[0012] By adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are: 1. The present invention collects various status data of the transformer through the data acquisition module, and then uses the data analysis module to obtain the status of the transformer. Then, according to the analyzed transformer status, a corresponding compensation strategy for the transformer in the reactive state is generated, and the power compensation module is used to execute according to the compensation strategy, thereby facilitating the subsequent optimal adjustment of reactive data in power transformers with different distributions and the compensation effect; 2. The present invention measures the status data around the transformer through current transformers, temperature sensors, and vibration sensors, thereby laying the foundation for subsequent reactive power compensation of transformers with different distributions. The power compensation optimization unit processes the performance data of different transformers, and then uses formulas to analyze the impact of the performance data on the compensation status. Finally, the power decision-making unit analyzes the composition data between capacitors, achieving the effect of subsequent better reactive power compensation of the transformer. 3. The present invention uses multi-level warnings in the warning module to facilitate personnel to maintain capacitors and transformers, thereby preventing damage to capacitors and transformers that may lead to deviations in subsequent reactive power compensation. At the same time, when the number of capacitors in use is less than a certain number, the transformer is stopped to protect the transformer.

[0013] Other advantages, objects and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a flow chart of the measurement system in an embodiment of the present invention. DETAILED DESCRIPTION

[0015] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0016] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0017] Example 1: Please see the attached Figure 1 The present invention provides a reactive power compensation measurement system for distributed power transformation, the measurement system including a data acquisition module, a data analysis module, a power compensation module and an early warning module; The data acquisition module is used to measure the circuit current, ambient temperature and vibration data of transformers in different routes, and transmit the data measured by the data acquisition module to the data analysis module; The data analysis module is used to analyze the data collected by the data acquisition module, analyze the current data based on the collected data, determine whether the current in the transformers of different routes needs reactive power compensation, analyze the circuit status data in the transformer based on the temperature, humidity and vibration data around the transformer, and transmit the circuit status data to the power compensation module; The power compensation module adjusts the current according to the circuit status data in different transformers; The early warning module issues early warnings to different transformers when the power compensation module is unable to perform compensation.

[0018] Specific work flow: Before starting the system, ensure that the data acquisition module, data analysis module, power compensation module and early warning module are in normal working condition, check whether the communication links between the modules are unobstructed, and ensure that the data can be transmitted accurately. The data acquisition module measures the circuit current in different line transformers in real time, and obtains current data through the current sensor installed on the transformer line. Use the temperature sensor to measure the temperature around the transformer. The sensor is installed on or near the transformer casing and can accurately obtain the ambient temperature data. Use the humidity sensor to monitor the humidity around the transformer to ensure the accuracy of the humidity data. Use the vibration sensor to collect the vibration data of the transformer. By analyzing the vibration data, you can understand the operating status of the mechanical components inside the transformer. The data acquisition module transmits the measured circuit current, temperature, humidity and vibration data to the data analysis module. The power compensation module receives the data from the data analysis module. Circuit status data is collected and current is adjusted based on the circuit status data of different transformers. If data analysis indicates the need for reactive power compensation, the power compensation module adjusts the reactive current by controlling the switching of capacitor banks or reactor banks to bring the transformer's power factor within a reasonable range. If the power compensation module is unable to provide compensation, such as due to a compensation device failure or reaching the compensation limit, the early warning module activates and issues early warnings for each transformer. Warning information, including the transformer's location and the type of problem, is sent to maintenance personnel via audible and visual alarms or remote communication. Upon receiving the warning, maintenance personnel promptly inspect and repair the transformer to ensure the normal operation of the power system. This process operates in a continuous loop, with the data acquisition module constantly collecting new data and each module processing and responding in real time. The system also incorporates a monitoring mechanism to monitor the operating status of each module in real time, ensuring the stability and reliability of the entire reactive power compensation measurement system. If a module failure is detected, troubleshooting is carried out promptly or a switch is made to a backup module.

[0019] Furthermore, the data acquisition module is used to collect various status data of the transformer, and then the data analysis module is used to obtain the status of the transformer. Then, according to the analyzed transformer status, a corresponding compensation strategy for the transformer in the reactive state is generated, and the power compensation module is used to execute according to the compensation strategy, thereby facilitating the subsequent optimal adjustment of the reactive data in the power transformers with different distributions and the compensation effect.

[0020] Example 2: Based on the first embodiment, please refer to the attached Figure 1As shown, the data acquisition module includes a current transformer, which converts the collected current into current data using the current transformer, and then transmits the current data to the data analysis module. The data analysis module generates compensation strategies for different transformers based on the current data. The data acquisition module includes a temperature sensor and a vibration sensor. The temperature sensor is used to collect temperature impact data of the reactive compensation device on the transformer, and the vibration sensor is used to obtain electromagnetic force data around the reactive compensation device. The collected temperature impact data and electromagnetic force data of the reactive compensation device are then transmitted to the data analysis module. The data analysis module analyzes the performance data of the transformer based on the temperature impact data and the electromagnetic force data, and uses the performance data to analyze the compensation strategy data. For optimization, the data analysis module includes a power compensation storage unit, a power compensation optimization unit, and a power compensation decision unit. The power compensation storage unit is used to store compensation strategies corresponding to different current interval values. The data collected by the data acquisition module is matched with the interval value in the power compensation storage unit, and the compensation strategy of the corresponding interval is retrieved after the match is successful. The power compensation optimization unit analyzes the performance data based on the collected temperature and vibration data, and uses the performance data to predict the actual compensation state data of reactive compensation. The power compensation decision unit adjusts the composition data of the capacitor based on the actual compensation state data. The power compensation optimization unit obtains the actual compensation state data of the reactive state transformer through the formula. The specific formula is as follows: ; in, Indicates the actual compensation status data of the transformer, Indicates reactive power data affected by temperature, Indicates the power loss data caused by leakage current, Indicates the performance impact data of the transformer.

[0021] Specific work flow: The current is collected through the current transformer in the data acquisition module, and then the collected current is converted into current data through the current transformer. The converted current data is transmitted to the data analysis module. At the same time, the temperature sensor is used to collect the temperature impact data of the reactive compensation equipment in the transformer on the transformer, and the electromagnetic force data around the reactive compensation equipment is obtained through the vibration sensor. The collected temperature impact data and electromagnetic force data are transmitted to the data analysis module, so that the data acquisition module collects transformer status data with different distributions, and then optimizes the reactive power of the transformer and generates decisions based on the power compensation storage unit, the power compensation optimization unit and the power compensation decision unit.

[0022] Furthermore, the status data around the transformer is measured through current transformers, temperature sensors and vibration sensors, thereby laying the foundation for subsequent reactive power compensation of transformers with different distributions. The performance data of different transformers are processed using the power compensation optimization unit, and the impact of the performance data on the compensation status is analyzed through formulas. Finally, the composition data between capacitors is analyzed through the power decision-making unit, achieving the effect of better reactive power compensation for the transformer in the future.

[0023] Example 3: Based on the second embodiment, please refer to the attached Figure 1 As shown, the power compensation decision unit optimizes the decision strategy matched in the power compensation storage unit according to the actual compensation state data, thereby adjusting the power compensation data in different transformers. The power compensation module is used to control the composition of capacitors in different transformers, thereby compensating the current data in the transformers. The early warning module includes a harmonic analyzer, which is used to detect damaged capacitors in different transformers. A compensation threshold is set in the early warning module, the initial reactive power compensation data of the transformer is obtained, the number of capacitor compositions required for the initial reactive power compensation data is analyzed, and the compensation threshold is set according to the number of capacitor compositions required for the initial reactive power compensation data. When the capacitor damage affects the number of capacitor compositions required by the initial reactive power compensation data to the point where it cannot reach 200%, the early warning module issues a first-level early warning, using the first-level early warning to remind personnel to repair the capacitor. When the capacitor damage affects the number of capacitor compositions required by the initial reactive power compensation data to the point where it cannot reach 150%, the early warning module issues a second-level early warning, using the second-level early warning to detect the transformer and replace the capacitor. When the capacitor damage affects the number of capacitor compositions required by the initial reactive power compensation data to the point where it cannot reach 120%, the current transformer is stopped.

[0024] Specific workflow: The power compensation decision unit operates according to the actual compensation status data obtained in Example 2, and then obtains the matching decision strategy from the power compensation storage unit, optimizes these decision strategies according to the actual compensation status data, and adjusts the power compensation data in different transformers according to the optimized decision strategy. By controlling the composition of the capacitor, the current in the transformer is compensated to ensure that the current is in a reasonable reactive compensation state. The harmonic analyzer in the early warning module is used to detect damaged capacitors in different transformers, obtain the initial reactive compensation data of the transformer, analyze the number of capacitors required for the initial reactive compensation data, and then use the early warning module to make different early warning prompts according to different situations, and then process the transformer as needed.

[0025] Furthermore, through the multi-level warning in the early warning module, it is convenient for personnel to maintain capacitors and transformers, thereby preventing damage to capacitors and transformers that may cause deviations in subsequent reactive power compensation. At the same time, when the number of capacitors in use is less than a certain number, the transformer will stop working, thereby protecting the transformer.

[0026] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A reactive power compensation measurement system for distributed power transformation, characterized by: The measurement system includes a data acquisition module, a data analysis module, a power compensation module and an early warning module; The data acquisition module is used to measure the circuit current, the ambient temperature of the transformer and the vibration data of the transformer in different routes, and transmit the data measured by the data acquisition module to the data analysis module; The data analysis module is used to analyze the data collected by the data acquisition module, analyze the current data based on the collected data, determine whether the current in the transformers of different routes needs reactive power compensation, analyze the circuit status data in the transformer based on the temperature, humidity and vibration data around the transformer, and transmit the circuit status data to the power compensation module; The power compensation module adjusts the current according to the circuit status data in different transformers; The early warning module issues early warnings to different transformers when the power compensation module is unable to perform compensation.

2. The reactive power compensation measurement system for distributed power transformation according to claim 1, characterized in that: The data acquisition module includes a current transformer, which converts the collected current into current data, and then transmits the current data to the data analysis module. The data analysis module generates compensation strategies for different transformers based on the current data.

3. The reactive power compensation measurement system for distributed power transformation according to claim 2, characterized in that: The data acquisition module includes a temperature sensor and a vibration sensor. The temperature sensor is used to collect temperature impact data of the reactive compensation device on the transformer, and the vibration sensor is used to obtain electromagnetic force data around the reactive compensation device. The collected temperature impact data and electromagnetic force data of the reactive compensation device are then transmitted to the data analysis module. The data analysis module analyzes the performance data of the transformer based on the temperature impact data and the electromagnetic force data, and uses the performance data to optimize the compensation strategy data.

4. The reactive power compensation measurement system for distributed power transformation according to claim 3, characterized in that: The data analysis module includes a power compensation storage unit, a power compensation optimization unit and a power compensation decision unit. The power compensation storage unit is used to store compensation strategies corresponding to different current interval values. The data collected by the data acquisition module is matched with the interval value in the power compensation storage unit, and the compensation strategy of the corresponding interval is retrieved after the match is successful. The power compensation optimization unit analyzes the performance data based on the collected temperature and vibration data, and uses the performance data to predict the actual compensation status data of reactive compensation. The power compensation decision unit adjusts the composition data of the capacitor based on the actual compensation status data.

5. The reactive power compensation measurement system for distributed power transformation according to claim 4, characterized in that: The power compensation optimization unit obtains the actual compensation state data of the reactive state transformer through the formula, and the specific formula is as follows: ； in, Indicates the actual compensation status data of the transformer, Indicates reactive power data affected by temperature, Indicates the power loss data caused by leakage current, Indicates the performance impact data of the transformer.

6. The reactive power compensation measurement system for distributed power transformation according to claim 5, characterized in that: The power compensation decision unit optimizes the decision strategy matched in the power compensation storage unit according to the actual compensation state data, and further adjusts the power compensation data in different transformers.

7. The reactive power compensation measurement system for distributed power transformation according to claim 6, characterized in that: The power compensation module is used to control the composition of capacitors in different transformers, thereby compensating the current data in the transformers.

8. The reactive power compensation measurement system for distributed power transformation according to claim 7, characterized in that: The early warning module includes a harmonic analyzer, which is used to detect damaged capacitors in different transformers. A compensation threshold is set in the early warning module, initial reactive power compensation data of the transformer is obtained, the number of capacitor components required for the initial reactive power compensation data is analyzed, and a compensation threshold is set according to the number of capacitor components required for the initial reactive power compensation data. When the damage to the capacitor affects the number of capacitor components required for the initial reactive power compensation data to be no more than 200%, the early warning module performs a first-level early warning, using the first-level early warning to remind personnel to repair the capacitor. When the damage to the capacitor affects the number of capacitor components required for the initial reactive power compensation data to be no more than 150%, the early warning module performs a second-level early warning, using the second-level early warning to detect the transformer and replace the capacitor. When the damage to the capacitor affects the number of capacitor components required for the initial reactive power compensation data to be no more than 120%, the current transformer is stopped.

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