CN103364672A - Condition monitoring system and method of magnetic control reactor-type dynamic reactive power compensation equipment - Google Patents

Abstract

The invention discloses a state monitoring system and method of a magnetically controlled reactor type dynamic reactive power compensation device. The system includes a data collector for collecting power data of the magnetically controlled reactor type dynamic reactive power compensation device. and a data processing and analyzing system for analyzing and processing the electric power data to obtain state data of the magnetron reactor type dynamic reactive power compensation device. Through the state monitoring system and method of the magnetically controlled reactor type dynamic reactive power compensation device, the transient characteristics and stability of the magnetically controlled reactor branch and the shunt capacitor branch in the magnetically controlled reactor type dynamic reactive power compensation device can be obtained. State characteristics, including voltage, current, harmonics, overvoltage, inrush current and other state data, so as to understand the relevant performance of the magnetically controlled reactor type dynamic reactive power compensation device, which is convenient for the magnetically controlled reactor type dynamic reactive power compensation device The safe and reliable operation of the research work.

Description

State monitoring system and method for magnetically controlled reactor type dynamic reactive power compensation device

technical field

The invention relates to the technical field of electric power equipment management, and more specifically relates to a state monitoring system and method of a magnetically controlled reactor type dynamic reactive power compensation device.

Background technique

The magnetically controlled reactor type dynamic reactive power compensation device is a new type of reactive power compensation device, which has the characteristics of fast response speed, good economic performance, high efficiency, energy saving and environmental protection. Since the magnetically controlled reactor type dynamic reactive power compensation device can realize continuous adjustment from capacitive to inductive reactive power, it has been widely used in enterprises in the fields of electric power and electricity in recent years.

The magnetically controlled reactor type dynamic reactive power compensation device is mainly composed of a magnetically controlled reactor branch, a capacitor branch and a control system. Among them, the capacitor branch can take into account both reactive power and filtering functions according to actual needs. The magnetically controlled reactor type dynamic reactive power compensation device can change the output capacity of the magnetically controlled reactor by changing the saturation degree of the magnetically controlled reactor core, and cooperate with the capacitor branch to achieve smooth adjustment output of capacitive reactive power and inductive reactive power , to play a dynamic compensation effect.

As the magnetron reactor type dynamic reactive power compensation device is more and more widely used in all walks of life, the research and testing of the performance of the magnetron reactor type dynamic reactive power compensation device is becoming more and more important. It is of great significance to ensure the safe and reliable operation of the magnetically controlled reactor type dynamic reactive power compensation device. Therefore, those skilled in the art urgently need a state monitoring system and method for the magnetically controlled reactor type dynamic reactive power compensation device, so as to realize the determination of the state parameters of the magnetically controlled reactor type dynamic reactive power compensation device, and can Put the obtained state parameters into the research work of the safe and reliable operation of the magnetic control reactor type dynamic reactive power compensation device.

Contents of the invention

In view of this, the present invention provides a state monitoring system and method of a magnetically controlled reactor type dynamic reactive power compensation device, so as to realize the determination of state parameters of the magnetically controlled reactor type dynamic reactive power compensation device.

To achieve the above object, the present invention provides the following technical solutions:

A state monitoring system for a magnetically controlled reactor type dynamic reactive power compensation device, comprising:

A data collector, for synchronously collecting the power data of the magnetron reactor type dynamic reactive power compensation device;

The data processing and analysis system is used to analyze and process the electric power data to obtain the status data of the magnetically controlled reactor type dynamic reactive power compensation device.

Optionally, the data collector includes a voltage transformer, a current transformer and a digital-to-analog conversion collector.

Optionally, the power data includes 7-way voltage transformer signals of parallel capacitor branches, 3-way current transformer signals of parallel capacitor branches, secondary analog signals of magnetron reactor branch voltage and magnetron reactor branch Secondary analog signal of circuit current.

Optionally, the voltage transformer and the current transformer are electronic transformers.

Optionally, the state data includes transient characteristic data and steady-state characteristic data of the magnetron reactor branch and the shunt capacitor branch; the transient characteristic data and steady-state characteristic data include voltage data, current data, harmonic wave data, overvoltage data and inrush current data.

Optionally, the data processing and analysis system includes:

A data processing system, configured to send a collection synchronization signal to the data collector, perform arithmetic processing on the power data collected by the data collector, obtain basic state data, and send the basic state data to the data analysis system;

The data analysis system is used to receive the basic state data, analyze and process the basic state data, and obtain the state data of the magnetically controlled reactor type dynamic reactive power compensation device.

Optionally, also include:

The alarm is configured to send an alarm signal when the obtained state data exceeds a preset range.

A state monitoring method for a magnetically controlled reactor type dynamic reactive power compensation device, comprising:

synchronously collecting the power data of the magnetically controlled reactor type dynamic reactive power compensation device;

The power data is analyzed and processed to obtain the state data of the magnetron reactor type dynamic reactive power compensation device.

Optionally, the power data includes 7-way voltage transformer signals of parallel capacitor branches, 3-way current transformer signals of parallel capacitor branches, secondary analog signals of magnetron reactor branch voltage and magnetron reactor branch The secondary analog signal of the circuit current; the state data includes the transient characteristic data and the steady-state characteristic data of the magnetron reactor branch and the parallel capacitor branch; the transient characteristic data and the steady-state characteristic data include voltage data, current data, harmonic data, overvoltage data and inrush data.

Optionally, after obtaining the state data of the magnetically controlled reactor type dynamic reactive power compensation device, it also includes:

When the obtained state data exceeds a preset range, an alarm signal is sent.

It can be seen from the above technical solutions that, compared with the prior art, the embodiment of the present invention discloses a state monitoring system and method for a magnetically controlled reactor type dynamic reactive power compensation device. A data collector for power data of the controlled reactor type dynamic reactive power compensation device and a data processing and analysis system for analyzing and processing the power data to obtain state data of the magnetically controlled reactor type dynamic reactive power compensation device. Through the state monitoring system and method of the magnetically controlled reactor type dynamic reactive power compensation device, the transient characteristics and stability of the magnetically controlled reactor branch and the shunt capacitor branch in the magnetically controlled reactor type dynamic reactive power compensation device can be obtained. State characteristics, including voltage, current, harmonics, overvoltage, inrush current and other state data, so as to understand the relevant performance of the magnetically controlled reactor type dynamic reactive power compensation device, which is convenient for the magnetically controlled reactor type dynamic reactive power compensation device The safe and reliable operation of the research work.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a schematic structural diagram of a state monitoring system of a magnetron reactor type dynamic reactive power compensation device disclosed in an embodiment of the present invention;

Fig. 2 is the schematic diagram of the data sampling point of the capacitor branch in the magnetron reactor type dynamic reactive power compensation device;

3 is a schematic structural diagram of a data processing and analysis system disclosed in an embodiment of the present invention;

FIG. 4 is a schematic diagram of a data collection mechanism disclosed in an embodiment of the present invention;

Fig. 5 is a flowchart of a state monitoring method of a magnetically controlled reactor type dynamic reactive power compensation device disclosed in an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of a state monitoring system of a magnetically controlled reactor type dynamic reactive power compensation device disclosed in an embodiment of the present invention. Referring to Fig. 1, the state monitoring system 10 of the magnetically controlled reactor type dynamic reactive power compensation device can be include:

The data collector 101 is used to synchronously collect the power data of the magnetron reactor type dynamic reactive power compensation device;

In this embodiment, the magnetically controlled reactor type dynamic reactive power compensation device may be 35KV or 110KV.

Wherein, the data collector 101 may include a voltage transformer, a current transformer and a digital-to-analog conversion collector. Specifically, Fig. 2 is a schematic diagram of the data sampling points of the capacitor branch in the magnetically controlled reactor type dynamic reactive power compensation device. As shown in Fig. 2, the position drawn by the arrow is the installation position of the data collector, where U0- A voltage transformer is installed at U6 to obtain the digital signal of the voltage value at the corresponding sampling point; a current transformer is respectively installed at I1-I3 to obtain the digital signal of the current value at the corresponding sampling point. The above-mentioned digital-to-analog conversion collector is respectively connected to the secondary analog signal of the voltage transformer and the secondary analog signal of the current transformer of the magnetic control reactor branch of the magnetic control reactor type dynamic reactive power compensation device. The digital-to-analog conversion collector can convert the collected voltage secondary analog signals and current secondary analog signals into digital signals and then send them to the data processing and analysis system. Therefore, the power data may include but not limited to the 7-way voltage transformer signal of the parallel capacitor branch, the 3-way current transformer signal of the parallel capacitor branch, the secondary analog signal of the magnetic control reactor branch voltage and the magnetic control reactance At least one or two groups of signals in the secondary analog signal of the switch branch current.

Considering the voltage or current frequency response problem of the voltage/current transformer when collecting power data, and also considering the problem of synchronous data collection, in order to collect voltage and current signals more smoothly and accurately, the voltage mutual inductance in the embodiment of the present invention The transformer may be an electronic voltage transformer, and the current transformer in the embodiment of the present invention may be an electronic current transformer.

The data processing and analysis system 102 is configured to analyze and process the power data to obtain state data of the magnetron reactor type dynamic reactive power compensation device.

Wherein, the state data may include transient characteristic data and steady-state characteristic data of the magnetic control reactor branch and the parallel capacitor branch; including voltage data, current data, harmonic data, overvoltage data and inrush current data at least one or more of them. Of course, the state data is not limited to the above-mentioned several types of data. After obtaining the transient characteristic data and steady-state characteristic data of the magnetron reactor branch and the shunt capacitor branch, the transient characteristic and steady-state characteristic of the entire magnetron reactor type dynamic reactive power compensation device can be understood.

The data processing and analysis system 102 can integrate, analyze, verify and analyze the multi-channel data collected by the data collector 101, and at the same time support the control of multiple synchronous signals. The analysis of the electric power data can be realized by using existing data analysis and processing software in the prior art.

In a schematic example, the specific structure of the data processing and analysis system 102 can be referred to FIG. Analysis system 102 may include:

The data processing system 1021 is configured to send a collection synchronization signal to the data collector, perform calculation processing on the power data synchronously collected by the data collector, obtain basic state data, and send the basic state data to data analysis system;

The data processing system 1021 can complete the sending of the synchronization signal of the status monitoring system of the entire magnetically controlled reactor type dynamic reactive power compensation device. The data processing system 1021 can combine the digital signals sent by the electronic transformer and the digital-to-analog conversion collector with the field programmable gate array development tool, and use the 9401 high-speed digital I/O module to complete the high-speed collection of digital signals and the transmission of synchronous signals. Then the digital signal is buffered and sent to the RT module through the first-in-first-out queue to complete a series of operations such as signal synchronization, verification, conversion and processing. The basic state data is obtained after the power data is processed by the data processing system 1021 . For example, the basic state data may be power data obtained by multiplying voltage data and current data at a sampling point.

As mentioned earlier, the data collector of the state monitoring system of the magnetically controlled reactor type dynamic reactive power compensation device can use an electronic transformer with a synchronous signal to complete the front-end data collection, and the data collected by the electronic transformer It can be transmitted to the data processing system 1021 via optical fiber for processing and then packaged and sent to the data analysis system. The acquisition synchronization signal of the electronic transformer is sent by the field programmable gate array module controlled by the data processing system 1021, and the acquisition frequency is controlled by the frequency of the synchronization signal.

FIG. 4 is a schematic diagram of the data acquisition mechanism disclosed in the embodiment of the present invention. With reference to FIG. 4 , in the entire sampling control cycle, the data collector 101 is always in the sampling and holding state until receiving a synchronization signal from the data processing system 1021 . After receiving and correctly identifying the synchronous signal, the sampling circuit in the data collector 101 releases the holding state, and runs the sampling cycle. After the sampling is completed, the sampled value is converted into an optical fiber signal through the photoelectric conversion circuit in the data collector 101, and then passed through the optical fiber The data is sent to the field programmable gate array module in the data processing system 1021, that is, the FPGA module, to complete a sampling cycle. The sampling rate of the sampling cycle is mainly limited by the unit time of the sampling cycle of the collector circuit. During the execution of the sampling cycle, the sampling circuit will no longer receive the synchronization signal sent by the FPGA module in the data processing system.

In the status monitoring system of the magnetically controlled reactor type dynamic reactive power compensation device, there may be several acquisition modes for finally obtaining the status data that you want to know. It can include transient sampling and steady-state sampling. The sampling frequency of transient sampling and steady-state sampling is different. When performing transient sampling, the system requires a high sampling rate of 200kS/s to record the transient waveform in a short period of time and perform Analysis and uploading, in this case, the data processing system 1021 will adaptively adjust the sending frequency of the synchronization signal according to the collection mode set by the data analysis system, and the collection circuit in the data collector 101 will Under control, the collection and data return tasks will be completed at a corresponding collection speed, and the data will be sent back to the data processing system 1021 via optical fiber for processing and packaging, and then sent to the data analysis system via Ethernet.

During steady-state sampling, the data processing system 1021 reduces the sending frequency of the synchronous signal according to the acquisition mode downloaded from the data analysis system, and the sampling unit performs steady-state sampling at the corresponding frequency under the control of the synchronous signal and uploads the sampled data, and the data processing After the system 1021 finishes processing and packaging the collected power data, it sends it to the data analysis system for analysis and records the data waveform.

Referring back to FIG. 3 , the data processing and analysis system 102 includes a data analysis system 1022 in addition to the data processing system 1021 .

The data analysis system 1022 is configured to receive the basic state data processed by the data processing system, and analyze the basic state data to obtain the state data of the magnetron reactor type dynamic reactive power compensation device.

The data analysis system 1022 may be an independent computer, and data transmission and communication between the data processing system 1021 and the data analysis system 1022 may be performed through Ethernet. The database analysis system 1022 can be customized and installed with one or more kinds of software with specific analysis and processing functions, so as to analyze and process the basic state data sent by the data processing system, and obtain the magnetic information that the user needs to know. The status data of the reactor-controlled dynamic reactive power compensation device.

The data analysis system 1022 may, but is not limited to, implement transient processes and steady state processes. Transient process: test 110kV/35kV magnetic control reactor type dynamic reactive power compensation device, capacitor bank in parallel capacitor branch circuit, series reactor pole/to-ground transient overvoltage and inrush current; record 110kV/35kV magnetic control reactor The output voltage and current waveforms of the magnetically controlled reactor branch in the type dynamic reactive power compensation device are used to test the response characteristics. Steady-state process: test the steady-state voltage and current between the electrodes of the capacitor bank and series reactor in the shunt capacitor branch circuit of the 110kV/35kV magnetically controlled reactor type dynamic reactive power compensation device, and calculate the capacitance of the capacitor bank and series reactor , inductance parameters and the whole group of P, Q, S, and harmonic analysis; test the voltage and current of the branch circuit of the magnetic control reactor in the 110kV/35kV magnetic control reactor type dynamic reactive power compensation device, and test the volts of the magnetic control reactor security features.

In other embodiments, in addition to the data collector and data processing and analysis system, the state monitoring system of the magnetically controlled reactor type dynamic reactive power compensation device may also include an alarm, which is used to obtain the state data exceeding When the preset range is reached, an alarm signal is issued. In this way, the user is reminded in time of the operation problem or failure of the current magnetically controlled reactor type dynamic reactive power compensation device.

In this embodiment, the state monitoring system of the magnetically controlled reactor type dynamic reactive power compensation device can collect the power data of the magnetically controlled reactor type dynamic reactive power compensation device through the data collector, and obtain the collected data through the data processing and analysis system. The power data is processed and analyzed, so as to finally obtain the transient characteristics and steady-state characteristics of the magnetron reactor branch and parallel capacitor branch in the magnetron reactor type dynamic reactive power compensation device, including voltage, current, harmonic , overvoltage, inrush current and other state data, so as to understand the relevant performance of the magnetically controlled reactor type dynamic reactive power compensation device, and facilitate the research work on the safe and reliable operation of the magnetically controlled reactor type dynamic reactive power compensation device.

In addition to the state monitoring system of the magnetically controlled reactor type dynamic reactive power compensation device disclosed above, the embodiment of the present invention also discloses a state monitoring method of the magnetically controlled reactor type dynamic reactive power compensation device.

Fig. 5 is a flow chart of the state monitoring method of the magnetically controlled reactor type dynamic reactive power compensation device disclosed in the embodiment of the present invention, and the method is applied to the state monitoring system of the magnetically controlled reactor type dynamic reactive power compensation device disclosed in the above embodiment , as shown in Figure 5, the method may include:

Step 501: collecting the power data of the magnetron reactor type dynamic reactive power compensation device;

In this embodiment, the magnetically controlled reactor type dynamic reactive power compensation device may be 35KV or 110KV.

Wherein, the power data may include but not limited to 7 voltage transformer signals of the parallel capacitor branch, 3 current transformer signals of the parallel capacitor branch, the secondary analog signal of the magnetic control reactor branch voltage and the magnetic control Reactor branch current secondary analog signal.

Considering the voltage or current frequency response problem of the voltage/current transformer when collecting power data, and also considering the problem of synchronous data collection, in order to collect voltage and current signals more smoothly and accurately, the voltage mutual inductance in the embodiment of the present invention The transformer may be an electronic voltage transformer, and the current transformer in the embodiment of the present invention may be an electronic current transformer.

Step 502: Analyze and process the power data to obtain state data of the magnetically controlled reactor type dynamic reactive power compensation device.

Wherein, the state data includes transient characteristic data and steady-state characteristic data of the magnetic control reactor branch and the parallel capacitor branch, and the transient characteristic data and steady-state characteristic data include voltage data, current data, harmonic data , overvoltage data and inrush current data.

Step 502 can specifically integrate, analyze, verify and analyze multiple channels of data, and the system supports the control of multiple channels of synchronization signals at the same time. The analysis of the electric power data can be realized by using existing data analysis and processing software in the prior art.

In other embodiments, when the state data obtained in step 502 exceeds the preset range of the system, the step of sending an alarm signal may also be included to promptly remind the user that there is an operation problem or Fault.

In this embodiment, the state monitoring method of the magnetically controlled reactor type dynamic reactive power compensation device first collects the power data of the magnetically controlled reactor type dynamic reactive power compensation device, and then processes and analyzes the collected power data, so that finally Obtain the transient characteristics, steady-state characteristics, harmonics, overvoltage, inrush current and other state data of the magnetic control reactor, capacitor and reactor in the magnetic control reactor type dynamic reactive power compensation device, so as to understand the magnetic control reactor The relevant performances of the dynamic reactive power compensation device of the magnetic control reactor type are convenient for the research work on the safe and reliable operation of the dynamic reactive power compensation device of the magnetic control reactor.

For the same and similar parts of the various embodiments in this specification, refer to each other. As for the method disclosed in the embodiment, since it corresponds to the system disclosed in the embodiment, the description is relatively simple, and for the related part, please refer to the description of the system part.

It should also be noted that in this document, the terms "comprises", "comprises" or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or which are inherent in the process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The steps of the methods or algorithms described in connection with the embodiments disclosed herein may be directly implemented by hardware, software modules executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other Any other known storage medium.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A state monitoring system of a magnetically controlled reactor type dynamic reactive power compensation device, characterized in that, comprising: A data collector, for synchronously collecting the power data of the magnetron reactor type dynamic reactive power compensation device; The data processing and analysis system is used to analyze and process the electric power data to obtain the status data of the magnetically controlled reactor type dynamic reactive power compensation device. 2. The condition monitoring system according to claim 1, wherein the data collector comprises a voltage transformer, a current transformer and a digital-to-analog conversion collector. 3. The condition monitoring system according to claim 2, wherein the power data includes 7 voltage transformer signals of the parallel capacitor branch, 3 current transformer signals of the parallel capacitor branch, and the magnetron reactor The secondary analog signal of the branch voltage and the secondary analog signal of the branch current of the magnetron reactor. 4. The condition monitoring system according to claim 2, wherein the voltage transformer and the current transformer are electronic transformers. 5. state monitoring system according to claim 1, is characterized in that, described state data comprises the transient characteristic data and steady-state characteristic data of magnetron reactor branch circuit and shunt capacitor branch circuit; Described transient characteristic data And steady-state characteristic data include voltage data, current data, harmonic data, overvoltage data and inrush current data. 6. The condition monitoring system according to claim 1, wherein the data processing and analyzing system comprises: A data processing system, configured to send a collection synchronization signal to the data collector, perform arithmetic processing on the power data collected by the data collector, obtain basic state data, and send the basic state data to the data analysis system; The data analysis system is used to receive the basic state data, analyze and process the basic state data, and obtain the state data of the magnetically controlled reactor type dynamic reactive power compensation device. 7. The condition monitoring system according to claim 1, further comprising: The alarm is configured to send an alarm signal when the obtained state data exceeds a preset range. 8. A state monitoring method for a magnetically controlled reactor type dynamic reactive power compensation device, characterized in that it comprises: synchronously collecting the power data of the magnetically controlled reactor type dynamic reactive power compensation device; The power data is analyzed and processed to obtain the state data of the magnetron reactor type dynamic reactive power compensation device. 9. The state monitoring method according to claim 8, wherein the power data includes 7 voltage transformer signals of the parallel capacitor branch, 3 current transformer signals of the parallel capacitor branch, and the magnetron reactor The secondary analog signal of the branch voltage and the secondary analog signal of the branch current of the magnetron reactor; the state data includes the transient characteristic data and the steady-state characteristic data of the magnetron reactor branch and the parallel capacitor branch; the transient State characteristic data and steady state characteristic data include voltage data, current data, harmonic data, overvoltage data and inrush current data. 10. The state monitoring method according to claim 8, characterized in that, after obtaining the state data of the magnetically controlled reactor type dynamic reactive power compensation device, it also includes: When the obtained state data exceeds a preset range, an alarm signal is sent.

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