A reactive power compensation measurement system for a distributed power transformer

Abstract

The application discloses a kind of reactive power compensation measurement systems of distributed power transformer, the present application relates to transformer measurement technical field, measurement system includes data acquisition module, data analysis module, power compensation module and early warning module, data acquisition module is used to measure the circuit current in different route transformer, temperature around transformer and the vibration data of transformer, the data measured by data acquisition module is transmitted to data analysis module, the advantage of the present application is that: by data acquisition module, each aspect state data in transformer is collected, then the state of transformer is obtained using data analysis module, then according to the analyzed transformer state, the compensation strategy of corresponding transformer in reactive state is generated, power compensation module is executed according to compensation strategy, and then the effect of subsequent optimal adjustment and compensation of reactive data in different distributed power transformer is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer measurement, in particular to a kind of reactive power compensation measurement system of distributed power transformer. BACKGROUND

[0002] With the continuous development of power system, the proportion of distributed power supply in power supply gradually increases, and the distributed power transformation system, as a key link of power transmission and distribution, faces many technical challenges. In the process of power system operation, the balance of reactive power is crucial to ensure power quality. The traditional centralized reactive power compensation method gradually exposes limitations in the distributed power system. The distributed power transformation system has dispersion and complexity, and the load conditions of transformers in different lines are variable, resulting in large differences in reactive power demand.

[0003] However, the existing reactive power compensation measurement system cannot measure different distributed transformers, resulting in the inability to adjust and optimize capacitors according to the state of the transformer, which makes the subsequent reactive power compensation effect unsatisfactory. Therefore, we propose a kind of reactive power compensation measurement system of distributed power transformer. SUMMARY

[0004] The present application relates to the technical field of transformer measurement, in particular to a kind of reactive power compensation measurement system of distributed power transformer.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a kind of reactive power compensation measurement system of distributed power transformer, the measurement system includes data acquisition module, data analysis module, power compensation module and early warning module;

[0006] The data acquisition module is used to measure the circuit current in different route transformers, the temperature around the transformer and the vibration data of the transformer, and the data measured by the data acquisition module is transmitted to the data analysis module;

[0007] The data analysis module is used to analyze the data collected by the data acquisition module, analyze the current data according to the collected data, judge whether the current in different route transformers needs reactive power compensation, analyze the circuit state data in the transformer according to the temperature, humidity and vibration data around the transformer, and transmit the circuit state data to the power compensation module;

[0008] The power compensation module adjusts the current according to the circuit state data in different transformers.

[0009] The early warning module warns different transformers when the power compensation module cannot compensate.

[0010] As a further scheme of the present application: the data acquisition module comprises a current transformer, the current collected is converted into current data by the current transformer, and then the current data is transmitted to the data analysis module, and the data analysis module generates compensation strategies for different transformers according to the current data.

[0011] As a further scheme of the present application: the data acquisition module comprises a temperature sensor and a vibration sensor, the temperature influence data of the reactive power compensation device on the transformer is collected by the temperature sensor, the electromagnetic force data around the reactive power compensation device is obtained by the vibration sensor, and then the collected temperature influence data and electromagnetic force data of the reactive power compensation device are transmitted to the data analysis module, the performance data of the transformer is analyzed according to the temperature influence data and the electromagnetic force data, and the performance data is used to optimize the compensation strategy data.

[0012] As a further scheme of the present application: the data analysis module comprises a power compensation storage unit, a power compensation optimization unit and a power compensation decision unit, the compensation strategies corresponding to different current interval values are stored in the power compensation storage unit, the data collected by the data acquisition module is matched with the interval values in the power compensation storage unit, and the compensation strategy of the corresponding interval after the matching is successful is called, the performance data analyzed according to the collected temperature and vibration data is used by the power compensation optimization unit to predict the actual compensation state data of the reactive power compensation, and the power compensation decision unit adjusts the composition data of the capacitor according to the actual compensation state data.

[0013] As a further scheme of the present application: 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:

[0014] ;

[0015] Among them, indicates the actual compensation state data of the transformer, indicates the temperature-influenced reactive power data, indicates the loss power data generated by the leakage current, indicates the performance influence data of the transformer.

[0016] As a further scheme of the present application: 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.

[0017] As a further scheme of the present application: the power compensation module is used to control the composition of the capacitor in different transformers, and then compensate the current data in the transformer.

[0018] As a further scheme of the present application: the early warning module comprises a harmonic analyzer, the harmonic analyzer is used for detecting damaged capacitors in different transformers, a compensation threshold is set in the early warning module, initial reactive power compensation data of the transformer is acquired, the number of capacitors required by the initial reactive power compensation data is analyzed, the compensation threshold is set according to the number of capacitors required by the initial reactive power compensation data, when the damage of the capacitor affects the initial reactive power compensation data required by the number of capacitors by more than 200%, the early warning module performs a first level early warning, and personnel are reminded to repair the capacitor by using the first level early warning, when the damage of the capacitor affects the initial reactive power compensation data required by the number of capacitors by more than 150%, the early warning module performs a second level early warning, and the transformer is detected and the capacitor is replaced by using the second level early warning, and when the damage of the capacitor affects the initial reactive power compensation data required by the number of capacitors by more than 120%, the work of the current transformer is stopped.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1、The data acquisition module is used for collecting various state data in the transformer, the data analysis module is used for acquiring the state of the transformer, the corresponding compensation strategy of the transformer in the reactive state is generated according to the analyzed state of the transformer, and the power compensation module is used for executing the compensation strategy, so that the subsequent optimal adjustment and compensation effect of the reactive power data in the power transformer with different distributions are facilitated.

[0021] 2、The current transformer, the temperature sensor and the vibration sensor are used for measuring the state data around the transformer, so as to lay a foundation for subsequent reactive power compensation of the transformer with different distributions, the power compensation optimization unit is used for processing the performance data of different transformers, the performance data is analyzed by using a formula to affect the compensation state, and finally the power decision unit is used for the composition data between the capacitors, so that the subsequent reactive power compensation effect of the transformer is better.

[0022] 3、The multi-level early warning in the early warning module is used, so that the personnel can maintain the capacitors and the transformer, so as to prevent the subsequent reactive power compensation from being deviated due to the damage of the capacitors and the transformer, and when the number of capacitors is less than a certain number, the work of the transformer is stopped, so as to protect the transformer.

[0023] Other advantages, objects, and features of the present application will be set forth in part in the following specification taken in conjunction with the accompanying drawings, and in part will become apparent to those skilled in the art from a consideration of the following specification and drawings, or can be learned from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A flow chart of the measuring system in the embodiment of the present application. DETAILED DESCRIPTION

[0025] The specific embodiments of the present application will be further described below with reference to the drawings, and it should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation on the present application.

[0026] In addition, the technical features involved in each of the embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0027] Embodiment one:

[0028] Please refer to the accompanying drawings Figure 1 The present application is a kind of distributed power transformer reactive power compensation measurement system, the measurement system includes data acquisition module, data analysis module, power compensation module and early warning module;

[0029] The data acquisition module is used to measure the circuit current in the transformer of different routes, the temperature around the transformer and the vibration data of the transformer, and the data measured by the data acquisition module is transmitted to the data analysis module;

[0030] The data analysis module is used to analyze the data collected by the data acquisition module, to analyze the current data according to the collected data, to judge whether the current in the transformer of different routes needs to be compensated, to analyze the circuit state data in the transformer according to the temperature, humidity and vibration data around the transformer, and to transmit the circuit state data to the power compensation module;

[0031] The power compensation module adjusts the current according to the circuit state data in the different transformers;

[0032] The early warning module warns different transformers when the power compensation module cannot compensate.

[0033] Specific workflow: Before the system starts, make sure that the data acquisition module, data analysis module, power compensation module and early warning module are in normal working state, check whether the communication link between each module is smooth, ensure that the data can be accurately transmitted, the data acquisition module measures the circuit current in different line transformers in real time, obtains the current data through the current sensor installed on the transformer line, measures the temperature around the transformer using a temperature sensor, the sensor is installed on or near the transformer shell, which can accurately obtain the environmental temperature data, uses a humidity sensor to monitor the humidity around the transformer, ensures the accuracy of humidity data, uses a vibration sensor to collect vibration data of the transformer, analyzes the vibration data to understand the running status of the internal mechanical parts of 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 circuit state data from the data analysis module, adjusts the current according to the circuit state data in different transformers, if the data analysis result shows that reactive power compensation is needed, the power compensation module adjusts the reactive current by controlling the switching of capacitor banks or reactor banks, so that the power factor of the transformer reaches a reasonable range, when the power compensation module cannot compensate, such as compensation equipment failure or reaching the compensation limit, the early warning module starts, and different transformers are warned, the warning information is sent to the operation and maintenance personnel through the sound and light alarm or remote communication, including the location of the transformer, the type of problem, etc., after receiving the warning information, the operation and maintenance personnel check and repair the transformer in time to ensure the normal operation of the power system, the above process continues to run in a loop, the data acquisition module continuously collects new data, each module processes and responds in real time, the system sets up a monitoring mechanism to monitor the working state of each module in real time, ensures the stability and reliability of the whole reactive power compensation measurement system. Once a module failure is found, troubleshoot or switch to a backup module in time.

[0034] Further, through the data acquisition module, the state data of each aspect in the transformer is collected, and then the data analysis module is used to obtain the state of the transformer, and then a compensation strategy of the transformer in the reactive state is generated according to the analyzed transformer state, and the power compensation module is used to execute according to the compensation strategy, thereby facilitating subsequent optimal adjustment and compensation effect of the reactive power data in different distributed power transformers.

[0035] Embodiment two:

[0036] Based on the basis of embodiment one, 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 influence data of the reactive power compensation equipment on the transformer. The vibration sensor is used to obtain electromagnetic force data around the reactive power compensation equipment. The collected temperature influence data and electromagnetic force data of the reactive power 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 influence data and the electromagnetic force data. The performance data is used to optimize the compensation strategy data. 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 stores compensation strategies corresponding to different current interval values. The data collected by the data acquisition module is matched with the interval values in the power compensation storage unit, and the compensation strategy of the corresponding interval after successful matching is retrieved. The power compensation optimization unit analyzes the performance data based on the collected temperature and vibration data. The performance data is used to predict the actual compensation state data of the reactive power 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 power state transformer through a formula, and the specific formula is as follows:

[0037] ;

[0038] wherein, represents the actual compensation state data of the transformer, represents the temperature-affected reactive power data, represents the loss power data generated by the leakage current, represents the performance influence data of the transformer.

[0039] The specific working process is as follows: the current is collected by the current transformer in the data acquisition module, and then the collected current is converted into current data by the current transformer. The converted current data is transmitted to the data analysis module. At the same time, the temperature influence data of the reactive power compensation equipment on the transformer is collected by the temperature sensor, and the electromagnetic force data around the reactive power compensation equipment is obtained by the vibration sensor. The collected temperature influence data and electromagnetic force data are transmitted to the data analysis module, so that the data acquisition module collects different distribution state data of the transformer. Then, the reactive power of the transformer is optimized and a decision is made based on the power compensation storage unit, the power compensation optimization unit, and the power compensation decision unit.

[0040] Further, the state data around the transformer is measured by the current transformer, temperature sensor and vibration sensor, thereby laying a foundation for subsequent reactive power compensation of different distributed transformers, the performance data of different transformers is processed by the power compensation optimization unit, thereby the compensation state affected by the performance data is analyzed through a formula, and finally the composition data between the capacitors is obtained by the power decision unit, so that the subsequent reactive power compensation effect of the transformer is better.

[0041] Embodiment three:

[0042] Based on the basis of embodiment two, please refer to the attached Figure 1 As shown in the figure, the power compensation decision unit optimizes the matching decision strategy 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 the capacitors in different transformers, thereby compensating the current data in the transformer, the warning module includes a harmonic analyzer, the harmonic analyzer is used to detect the damaged capacitors in different transformers, a compensation threshold is set in the warning module, the initial reactive power compensation data of the transformer is obtained, the number of capacitor compositions required by the initial reactive power compensation data is analyzed, the compensation threshold is set according to the number of capacitor compositions required by the initial reactive power compensation data, when the damaged capacitors affect the number of capacitor compositions required by the initial reactive power compensation data by 200%, the warning module performs a first level warning, and the personnel are reminded to repair the capacitors by using the first level warning, when the damaged capacitors affect the number of capacitor compositions required by the initial reactive power compensation data by 150%, the warning module performs a second level warning, and the transformer is detected and the capacitors are replaced by using the second level warning, when the damaged capacitors affect the number of capacitor compositions required by the initial reactive power compensation data by 100%, the work of the current transformer is stopped.

[0043] The specific working process is as follows: the power compensation decision unit operates according to the actual compensation state data obtained in embodiment two, then the matching decision strategy is obtained from the power compensation storage unit, the decision strategies are optimized according to the actual compensation state data, the power compensation data in different transformers is adjusted according to the optimized decision strategies, the current in the transformer is compensated by controlling the composition of the capacitors, so as to ensure that the current is in a reasonable reactive power compensation state, the harmonic analyzer in the warning module is used to detect the damaged capacitors in different transformers, the initial reactive power compensation data of the transformer is obtained, the number of capacitor compositions required by the initial reactive power compensation data is analyzed, then different warning prompts are given according to different situations by using the warning module, and the transformer is processed as needed.

[0044] Further, through the multi-stage early warning in the early warning module, personnel can maintain the capacitor and the transformer, thereby preventing the capacitor and the transformer from being damaged to cause subsequent reactive power compensation deviation, and when the number of capacitors used is less than a certain number, the work of the transformer is stopped, thereby protecting the transformer.

[0045] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A system for measuring reactive power compensation of a distributed power transformer, characterized by: The measurement system comprises a data acquisition module, a data analysis module, a power compensation module and a warning module; The data acquisition module is used for measuring the circuit current in different route transformers, the temperature around the transformer, the humidity around the transformer and the vibration data of the transformer, and transmitting the data measured by the data acquisition module to the data analysis module; The data analysis module is used for analyzing the data collected by the data acquisition module, analyzing the current data according to the collected data, judging whether the current in different route transformers needs to be compensated, analyzing the circuit state data in the transformer according to the temperature, humidity and vibration data around the transformer, and transmitting the circuit state data to the power compensation module; The power compensation module adjusts the current according to the circuit state data in different transformers; The warning module warns different transformers when the power compensation module cannot compensate. The data acquisition module comprises a current transformer, which converts the collected current into current data, and then transmits the current data to the data analysis module, and the data analysis module generates compensation strategies for different transformers according to the current data; The data acquisition module comprises a temperature sensor, a humidity sensor and a vibration sensor, which are used to measure the temperature around the transformer, monitor the humidity around the transformer, collect the vibration data of the transformer, collect the temperature influence data of the transformer by the temperature sensor, and collect the electromagnetic force data around the power compensation equipment by the vibration sensor, and then transmit the collected temperature influence data and electromagnetic force data of the power compensation equipment to the data analysis module, which analyzes the performance data of the transformer according to the temperature influence data and electromagnetic force data, and optimizes the compensation strategy data according to the performance data; The data analysis module comprises a power compensation storage unit, a power compensation optimization unit and a power compensation decision unit, which are used to store compensation strategies corresponding to different current interval values, match the data collected by the data acquisition module with the interval values in the power compensation storage unit, and retrieve the compensation strategies of the corresponding interval after successful matching, the power compensation optimization unit analyzes the performance data according to the collected temperature and vibration data, predicts the actual compensation state data of the power compensation according to the performance data, and the power compensation decision unit adjusts the composition data of the capacitor according to the actual compensation state data.

2. A system for measuring reactive power compensation of a distributed power transformer according to claim 1, characterized in that: 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: ； wherein, represents actual compensation state data of the transformer, represents reactive power data affected by temperature, represents loss power data generated by leakage current, represents performance influence data of the transformer.

3. A distributed power transformer reactive power compensation measurement system as claimed in claim 2, 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 then adjusts the power compensation data in different transformers.

4. A distributed power transformer reactive power compensation measurement system as claimed in claim 3, characterized in that: The power compensation module is used for controlling the composition of the capacitor in different transformers, and then compensating the current data in the transformer.

5. A distributed power transformer reactive power compensation measurement system as claimed in claim 4, characterized in that: The early warning module comprises a harmonic analyzer, which is used for detecting 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 groups required by the initial reactive power compensation data is analyzed, the compensation threshold is set according to the number of capacitor groups required by the initial reactive power compensation data, when the damage of the capacitor affects the initial reactive power compensation data required by the capacitor group composition number by 200%, the early warning module carries out a first level early warning, and personnel are reminded to repair the capacitor by using the first level early warning, when the damage of the capacitor affects the initial reactive power compensation data required by the capacitor group composition number by 150%, the early warning module carries out a second level early warning, and the transformer is detected and the capacitor is replaced by using the second level early warning, and when the damage of the capacitor affects the initial reactive power compensation data required by the capacitor group composition number by 102%, the work of the current transformer is stopped.

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