High-capacity power electronic device capable of being used for long-distance cable power transmission energy consumption control

Abstract

The invention discloses a high-capacity power electronic device capable of being used for long-distance cable power transmission energy consumption control, and relates to the technical field of energy consumption control. Comprising a circulation detection module, a monitoring module, a data exchange module, a data processing module, a data analysis module and a control module, wherein the circulating current detection module is used for collecting signals on a long-distance cable grounding wire in real time; the monitoring module is used for monitoring energy consumption data generated by long-distance cable power transmission according to the signal; the data exchange module is used for transmitting the energy consumption data to the data processing module; the data processing module is used for processing according to the received energy consumption data; the data analysis module is used for analyzing the processed energy consumption data and transmitting a control signal to the control module according to an analysis result; and the control module is used for receiving the control signal and controlling the power transmission energy consumption of the long-distance cable according to the control signal. The power transmission energy consumption of the long-distance cable can be controlled in time.

Description

Technical Field

[0001] The present invention relates to the technical field of energy consumption control, and more particularly to a large-capacity power electronic device capable of being used for energy consumption control of long-distance cable transmission. Background Art

[0002] Large-capacity power electronic devices usually refer to equipment used for high-power electric energy conversion and control in power systems. Through efficient and flexible electric energy conversion, such devices can significantly reduce energy consumption in long-distance cable transmission and improve transmission efficiency.

[0003] A typical device generally includes a rectifier side, a DC side, and an inverter side. The rectifier side is connected in parallel to the power grid to absorb the active current of the power grid to support the voltage on the DC side and provide the required active energy for the inverter side; the inverter side is directly connected in series to the power grid or in series with the power grid through a transformer to inject a given voltage into the power grid to simulate various voltage conditions of the power grid; the DC side connects the two power electronic conversion parts of the current disturbance device and acts as an energy exchange channel.

[0004] It has broad application prospects in the fields of DC transmission, flexible AC transmission and new energy grid connection. With the continuous development of technology, these devices will develop in the direction of modularization, intelligence, environmental protection and energy saving.

[0005] At present, in the existing technology, large-capacity power electronic devices can meet the needs of different power transmission scenarios, but the control of energy consumption of long-distance cable transmission cannot be discovered and processed in a timely manner, and the stability of the power system cannot be maintained.

[0006] Therefore, it is an urgent problem for those skilled in the art to propose a large-capacity power electronic device that can be used for energy consumption control of long-distance cable transmission to solve the difficulties existing in the prior art. Summary of the invention

[0007] In view of this, the present invention provides a large-capacity power electronic device that can be used for energy consumption control of long-distance cable transmission, so as to solve the technical problems arising in the prior art.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A large-capacity power electronic device capable of controlling energy consumption of long-distance cable transmission includes: a circulating current detection module, a monitoring module, a data exchange module, a data processing module, a data analysis module, and a control module; the circulating current detection module, the monitoring module, the data exchange module, the data processing module, the data analysis module, and the control module are connected in sequence, wherein:

[0010] Circulation current detection module, used to collect signals from long-distance cable grounding wires in real time;

[0011] A monitoring module, used to monitor energy consumption data generated by long-distance cable transmission based on signals;

[0012] A data exchange module, used for transmitting energy consumption data to a data processing module;

[0013] A data processing module, used for processing the received energy consumption data;

[0014] A data analysis module is used to analyze the processed energy consumption data and transmit a control signal to the control module according to the analysis results;

[0015] The control module is used to receive the control signal and control the power transmission energy consumption of the long-distance cable according to the control signal.

[0016] Optionally, the circulation detection module includes a circulation signal sensor, a circulation signal processing unit, a communication unit, and a processing terminal connected in sequence; wherein,

[0017] Circulating current signal sensor, used to collect voltage and current signals of the cable;

[0018] A circulating current signal processing unit samples and filters the voltage and current signals of the cable collected by the circulating current signal sensor;

[0019] The communication unit transmits the processed voltage and current signals to the processing terminal via optical fiber or 4G / 5G communication;

[0020] The processing terminal receives the processed voltage and current signals.

[0021] Optionally, the monitoring module includes a real-time data acquisition module, a data analysis module, an information fault warning module, and an energy consumption control module which are connected in sequence; wherein,

[0022] Real-time data acquisition module, collects real-time data of energy consumption;

[0023] Data analysis module, which analyzes the collected real-time data on energy consumption;

[0024] Information fault warning module, which provides fault warning for the analysis results;

[0025] The energy consumption control module controls the energy consumption.

[0026] Optionally, the data exchange module includes an XML parser and a data control unit connected in sequence;

[0027] XML parser, used to parse and control data during data exchange;

[0028] The data control unit is used to control the exchange of data streams using the XML parser.

[0029] Optionally, the model of the XML parser is XMLBooster.

[0030] Optionally, the data processing module includes a preprocessing unit and an adjustment unit connected in sequence; wherein,

[0031] A preprocessing unit, used for preprocessing energy consumption data;

[0032] The adjustment unit is used to adjust the energy consumption configuration strategy based on the preprocessed energy consumption data.

[0033] Optionally, the controller in the control module is a microprogram controller.

[0034] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a large-capacity power electronic device that can be used for long-distance cable transmission energy consumption control, and its beneficial effects are:

[0035] 1) Energy consumption control: By accurately controlling the conversion process of electric energy, energy loss in the transmission process can be reduced and transmission efficiency can be improved;

[0036] 2) System stability: During the power transmission process, energy consumption is controlled to maintain the stability of the power system and ensure power transmission safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0038] Figure 1 A structural diagram of a large-capacity power electronic device provided by the present invention that can be used for energy consumption control of long-distance cable transmission. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1As shown, the present invention discloses a large-capacity power electronic device that can be used for long-distance cable transmission energy consumption control, including: a circulating current detection module, a monitoring module, a data exchange module, a data processing module, a data analysis module, and a control module; the circulating current detection module, the monitoring module, the data exchange module, the data processing module, the data analysis module, and the control module are connected in sequence, wherein:

[0041] Circulation current detection module, used to collect signals from long-distance cable grounding wires in real time;

[0042] A monitoring module, used to monitor energy consumption data generated by long-distance cable transmission based on signals;

[0043] A data exchange module, used for transmitting energy consumption data to a data processing module;

[0044] A data processing module, used for processing the received energy consumption data;

[0045] A data analysis module is used to analyze the processed energy consumption data and transmit a control signal to the control module according to the analysis results;

[0046] The control module is used to receive the control signal and control the power transmission energy consumption of the long-distance cable according to the control signal.

[0047] Specifically, it also includes a power conversion module, which includes a rectifier side and an inverter side. The rectifier side adopts a multi-winding single-phase transformer connected to a single-phase H-bridge converter structure. The primary side of the multi-winding single-phase transformer is connected to the AC side power grid through a parallel inductor, and each winding of the secondary side of the multi-winding single-phase transformer is connected to the AC side of the single-phase H-bridge converter on the rectifier side in turn; the inverter side adopts an H-bridge cascade structure, and the H-bridge cascade structure single-phase H-bridge converter forms a "back-to-back" structure with the single-phase H-bridge converter on the rectifier side.

[0048] The H-bridge cascade structure is composed of a single-phase H-bridge converter connected in series. The single-phase H-bridge converter is composed of four bridge arms. Each bridge arm is composed of an IGBT module. The IGBT module includes an IGBT device and a diode anti-parallel therewith.

[0049] Furthermore, the circulation detection module includes a circulation signal sensor, a circulation signal processing unit, a communication unit, and a processing terminal connected in sequence; wherein,

[0050] Circulating current signal sensor, used to collect voltage and current signals of the cable;

[0051] A circulating current signal processing unit samples and filters the voltage and current signals of the cable collected by the circulating current signal sensor;

[0052] The communication unit transmits the processed voltage and current signals to the processing terminal via optical fiber or 4G / 5G communication;

[0053] The processing terminal receives the processed voltage and current signals.

[0054] Specifically, through the collaborative work among various modules, real-time monitoring and data analysis of long-distance cable circulation can be achieved, providing strong guarantees for the safe and reliable operation of the power system.

[0055] Specifically, the circulating current signal sensor is responsible for collecting the commutation signal of the long-distance cable, and can obtain the commutation data of the long-distance cable in real time. It is usually installed on the ground wire of the cable;

[0056] The circulating signal processing unit includes a signal sampling device and a filtering device, which samples and filters the signal collected from the circulating sensor to ensure the accuracy and reliability of the signal.

[0057] Specifically, it also includes a power supply module, which provides a stable power supply for the entire circulating current detection module to ensure continuous and stable operation.

[0058] Furthermore, the monitoring module includes a real-time data acquisition module, a data analysis module, an information fault warning module, and an energy consumption control module which are connected in sequence; wherein,

[0059] Real-time data acquisition module, collects real-time data of energy consumption;

[0060] Data analysis module, which analyzes the collected real-time data on energy consumption;

[0061] Information fault warning module, which provides fault warning for the analysis results;

[0062] The energy consumption control module controls energy consumption to prevent excessive consumption.

[0063] Specifically, the information fault warning module can provide timely fault warning for energy consumption data to ensure the safe operation of the power system.

[0064] Further, the data exchange module includes an XML parser and a data control unit connected in sequence;

[0065] XML parser, used to parse and control data during data exchange;

[0066] The data control unit is used to control the exchange of data streams using the XML parser.

[0067] Specifically, the data exchange module needs to process the received data, including parsing, converting, and adjusting the format of the data.

[0068] XML parsers are used to validate, parse, and transform XML messages.

[0069] Furthermore, the model of the XML parser is XMLBooster.

[0070] Furthermore, the data processing module includes a preprocessing unit and an adjustment unit connected in sequence; wherein,

[0071] A preprocessing unit, used for preprocessing energy consumption data;

[0072] The adjustment unit is used to adjust the energy consumption configuration strategy based on the preprocessed energy consumption data.

[0073] Specifically, the predicted consumption ratio of the long-distance cable is calculated to determine whether the predicted consumption ratio is lower than the preset ratio; when the predicted consumption ratio is lower than the preset ratio, the energy consumption configuration strategy is adjusted to the low energy consumption mode; when the predicted consumption ratio is greater than or equal to the preset ratio, the energy consumption configuration strategy is adjusted to the conventional energy consumption mode.

[0074] Specifically, it also includes: a power conversion module, which is used to receive the low energy consumption mode adjustment instruction sent by the data processing module.

[0075] Furthermore, the controller in the control module is a microprogram controller.

[0076] Specifically, it also includes an alarm module, which includes: an alarm drive module and an alarm module, the alarm drive module is used to send an alarm drive signal to the alarm module after receiving the alarm signal, and the alarm module alarms after receiving the alarm drive signal;

[0077] The specific type of the alarm module is not unique, and an acoustic alarm or a light alarm can be used. The specific type of the alarm module is selected according to actual needs. For example, when the alarm module is an acoustic alarm, the acoustic alarm is connected to the alarm driving module. After the acoustic alarm receives the alarm driving signal from the alarm driving module, it issues an alarm by emitting an alarm sound. Furthermore, the type of the acoustic alarm is not unique either. For example, it can be a buzzer, which continuously or intermittently emits a loud alarm sound, and the alarm effect is good. Alternatively, the acoustic alarm can also be a voice playback device, which can play different alarm voices according to different fault types, and the alarm content is rich.

[0078] When the alarm module is a light alarm, the light alarm is connected to the alarm driving module. After receiving the alarm driving signal from the alarm driving module, the light alarm emits an alarm light to give an alarm. Furthermore, the type of light alarm is not unique. For example, it can be a laser alarm. The laser alarm emits a more obvious laser continuously or intermittently, and has a good alarm effect. The light alarm can also be a strobe light alarm. According to different fault types, it emits light waves of different frequencies to quickly convey fault information. It can be understood that in other embodiments, the alarm module can also be of other types, as long as those skilled in the art believe that it can be implemented.

[0079] In a specific embodiment, a large-capacity power electronic device for controlling energy consumption of long-distance cable transmission includes: a circulating current detection module, a monitoring module, a data exchange module, a data processing module, a data analysis module, and a control module; wherein the circulating current detection module is used to collect signals on the long-distance cable grounding wire in real time, and simply processes the data into digital signals and then monitors the energy consumption through the monitoring module, and transmits the energy consumption data to the data processing module, and analyzes the processed energy consumption data through the data analysis module, and transmits a control signal to the control module according to the analysis and judgment results; after receiving the control signal, the control module adjusts the switch in and out, and if the energy consumption is large and the control module cannot control it, the alarm module will alarm. By adjusting the voltage, current and other parameters of the power electronic system, the flexible control and optimized operation of the power system can be achieved.

[0080] In another specific embodiment, it can be applied to the following scenarios:

[0081] In long-distance cable transmission, large-capacity power electronic devices can be applied in the following scenarios:

[0082] Direct current transmission: Using direct current transmission technology can reduce line losses and voltage drops during the transmission process and improve transmission efficiency.

[0083] Flexible AC transmission: By adjusting the voltage, current, phase and other parameters of the AC transmission system, flexible control and optimized operation of the power system can be achieved.

[0084] Renewable energy grid connection: With the rapid development of new energy, large-capacity power electronic devices have also been widely used in the new energy grid connection.

[0085] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0086] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A large-capacity power electronic device capable of controlling energy consumption of long-distance cable transmission, characterized in that: include: Circulation detection module, monitoring module, data exchange module, data processing module, data analysis module, control module; circulation detection module, monitoring module, data exchange module, data processing module, data analysis module, control module are connected in sequence; wherein, Circulation current detection module, used to collect signals from long-distance cable grounding wires in real time; A monitoring module, used to monitor energy consumption data generated by long-distance cable transmission based on signals; A data exchange module, used for transmitting energy consumption data to a data processing module; A data processing module, used for processing the received energy consumption data; A data analysis module is used to analyze the processed energy consumption data and transmit a control signal to the control module according to the analysis results; The control module is used to receive the control signal and control the power transmission energy consumption of the long-distance cable according to the control signal.

2. A large-capacity power electronic device capable of controlling energy consumption of long-distance cable transmission according to claim 1, characterized in that: The circulation detection module includes a circulation signal sensor, a circulation signal processing unit, a communication unit, and a processing terminal connected in sequence; wherein, Circulating current signal sensor, used to collect voltage and current signals of the cable; A circulating current signal processing unit samples and filters the voltage and current signals of the cable collected by the circulating current signal sensor; The communication unit transmits the processed voltage and current signals to the processing terminal via optical fiber or 4G / 5G communication; The processing terminal receives the processed voltage and current signals.

3. A large-capacity power electronic device capable of controlling energy consumption of long-distance cable transmission according to claim 1, characterized in that: The monitoring module includes a real-time data acquisition module, a data analysis module, an information fault warning module, and an energy consumption control module which are connected in sequence; Real-time data acquisition module, collects real-time data of energy consumption; Data analysis module, which analyzes the collected real-time data on energy consumption; Information fault warning module, which provides fault warning for the analysis results; The energy consumption control module controls the energy consumption.

4. A large-capacity power electronic device capable of controlling energy consumption of long-distance cable transmission according to claim 1, characterized in that: The data exchange module includes an XML parser and a data control unit connected in sequence; wherein, XML parser, used to parse and control data during data exchange; The data control unit is used to control the exchange of data streams using the XML parser.

5. A large-capacity power electronic device capable of controlling energy consumption of long-distance cable transmission according to claim 4, characterized in that: The model of XML parser is XMLBooster.

6. A large-capacity power electronic device capable of controlling energy consumption of long-distance cable transmission according to claim 1, characterized in that: The data processing module includes a preprocessing unit and an adjustment unit connected in sequence; wherein, A preprocessing unit, used for preprocessing energy consumption data; The adjustment unit is used to adjust the energy consumption configuration strategy based on the preprocessed energy consumption data.

7. A large-capacity power electronic device capable of controlling energy consumption of long-distance cable transmission according to claim 1, characterized in that: The controller in the control module is a microprogram controller.

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