CN111444598B - Control terminal of comprehensive energy system - Google Patents
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Abstract
The invention relates to a comprehensive energy control system, which can establish connection between a comprehensive energy system and a simulation comprehensive energy system by means of powerful calculation force of a control module and a processing module through arranging an OPC communication module and a small signal board. The control terminal can collect simulation signals of the simulation comprehensive energy system through the OPC communication module and collect actual signals of the comprehensive energy system through the small signal board, output a control strategy according to the collected simulation signals and the actual signals and an embedded strategy table, and output corresponding control instructions to the simulation comprehensive energy system and the comprehensive energy system according to the control strategy so as to fully utilize different types of energy, improve energy utilization efficiency and reduce energy consumption cost.
Description
Technical Field
The invention relates to the field of new energy, in particular to a control terminal of a comprehensive energy system.
Background
The comprehensive energy system is characterized in that a control terminal is utilized to integrate various energy sources such as coal, petroleum, natural gas, electric energy, heat energy and the like in a certain area, and coordination planning, optimized operation, collaborative management, interactive response and complementary interaction among various heterogeneous energy subsystems are realized. The novel integrated energy system can effectively improve the energy utilization efficiency and promote the sustainable development of energy while meeting the diversified energy requirements in the system.
For the safety operation of the comprehensive energy system, the dynamic characteristics and the control strategy effect cannot be known by applying various disturbance tests, so that the most effective method for verifying the comprehensive energy system is to increase the dynamic simulation. However, the dynamic simulation technology of the existing comprehensive energy system is not mature, and a control terminal cannot be connected into a software simulation system to realize closed-loop simulation control.
Disclosure of Invention
Based on the above, it is necessary to provide a control terminal of an integrated energy system, aiming at the problem that the control terminal cannot be connected to a simulation system to realize closed-loop simulation in the conventional technology.
A control terminal of a comprehensive energy system comprises a control module, a processing module, a small signal board and an OPC communication module;
the small signal board is connected with the comprehensive energy system and is used for collecting actual signals of the comprehensive energy system and sending the actual signals to the processing module, and the processing module processes the actual signals and sends the processed actual signals to the control module;
the OPC communication module is connected with the simulation comprehensive energy system, and the control module is connected with the OPC communication module and collects simulation signals of the simulation comprehensive energy system through the OPC communication module;
the control module is used for outputting a control strategy according to the simulation signal, the processed actual signal and a preset strategy table, generating a control instruction according to the control strategy, and respectively sending the control instruction to the simulation comprehensive energy system and the comprehensive energy system through the OPC communication module and the small signal board.
In one embodiment, the processing module comprises an outlier rejection unit, a feature extraction unit, a filtering unit and a data transformation unit;
the abnormal value eliminating unit is used for eliminating abnormal values in the actual signals according to a preset signal interval; the characteristic extraction unit is connected with the outlier rejection unit and is used for extracting the characteristics of the actual signals; the filtering unit is connected with the feature extraction unit and is used for filtering the signals after feature extraction; the data conversion unit is connected with the filtering unit and is used for carrying out data conversion on the filtered signals.
In one embodiment, the control module includes a data processing unit for converting the simulation signal and the actual signal into the same data type and processing the same.
In one embodiment, the control module further includes a policy unit for storing a plurality of control policies written in advance;
and the data processing unit outputs a corresponding control strategy according to the strategy table, the simulation signal and the actual signal, and generates a corresponding control instruction according to the control strategy.
In one embodiment, the OPC communication module is connected to the control module through an SPI communication interface;
the small signal board is connected with the processing module through the SPI communication interface;
the processing module is connected with the control module through the SPI communication interface.
In one embodiment, the processing module includes a first clock unit and the control module includes a second clock unit, the processing module and the control module communicating via the SPI communication interface to keep the first clock unit and the second clock unit synchronized.
In one embodiment, the small signal board comprises an analog-to-digital conversion unit and a level conversion unit connected with the analog-to-digital conversion unit, wherein the analog-to-digital conversion unit is used for performing analog-to-digital conversion on an input actual signal, and the level conversion unit is used for converting a voltage domain of the actual signal into a consistent voltage domain.
In one embodiment, the simulation comprehensive energy system is arranged on a PC, and the OPC communication module is connected with the PC through the SPI communication interface.
In one embodiment, the integrated energy system further comprises a power module for supplying power to the control terminal of the integrated energy system.
In one embodiment, the power module includes a dc power supply unit and an ac power supply unit, where the dc power supply unit connects the control module, the processing module, the small signal board, and the OPC communication module; the alternating current power supply unit is connected with the control module, the processing module, the small signal board and the OPC communication module.
The control terminal of the comprehensive energy system can establish connection between the comprehensive energy system and the simulation comprehensive energy system by means of powerful calculation power of the control module and the processing module through the OPC communication module and the small signal board. The control terminal can collect simulation signals of the simulation comprehensive energy system through the OPC communication module and collect actual signals of the comprehensive energy system through the small signal board, output a control strategy according to the collected simulation signals and the actual signals and an embedded strategy table, and output corresponding control instructions to the simulation comprehensive energy system and the comprehensive energy system according to the control strategy so as to fully utilize different types of energy, improve energy utilization efficiency and reduce energy consumption cost.
Drawings
Fig. 1 is a schematic block diagram of a control terminal of an integrated energy system according to an embodiment of the present application;
fig. 2 is a schematic block diagram of a control terminal of the integrated energy system according to another embodiment of the present application;
fig. 3 is a schematic block diagram of a control terminal of the integrated energy system according to another embodiment of the present application.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As described in the background, an effective method for verifying the integrated energy system is to build a simulated integrated energy system according to the integrated energy system, in view of the safety of the integrated energy system. At present, a control terminal is generally adopted to issue a control strategy to carry out energy efficiency supervision, energy consumption diagnosis and energy allocation of an actual energy system. However, because the dynamic simulation technology of the existing comprehensive energy system is not mature, the simulation energy comprehensive energy system cannot be connected into the control terminal, and closed-loop simulation control is realized. And the control terminal in the market is mainly applied to the comprehensive energy system, and a corresponding interface is not developed aiming at the characteristics of closed loop simulation, so that the development period of the comprehensive energy system is prolonged.
Aiming at the technical problems, the application provides a control terminal of a comprehensive energy system, which can be connected into the comprehensive energy system and the simulation comprehensive energy system, collect signals of the comprehensive energy system and the simulation comprehensive energy system, monitor the use condition of each energy consumption in real time, count and analyze energy consumption data, issue a control strategy to the comprehensive energy system and the simulation comprehensive energy system according to the collected signals and a built-in strategy table, so as to realize full utilization of different types of energy, improve energy efficiency in an energy utilization link and reduce operation cost.
An embodiment of the application provides a control terminal of a comprehensive energy system, which is connected with the comprehensive energy system and a simulation comprehensive energy system, and issues control instructions to the comprehensive energy system and the simulation comprehensive energy system according to collected signals of the comprehensive energy system and the simulation comprehensive energy system to realize closed-loop control. Referring to fig. 1, the control terminal of the integrated energy system includes a control module 100, a processing module 200, a small signal board 300, and an OPC communication module 400.
The small signal board 300 is connected to the integrated energy system, and is used for collecting an actual signal of the integrated energy system and transmitting the actual signal to the processing module 200. The actual energy system is composed of an energy supply network for providing energy in a certain area, an energy exchange link, an energy storage link, an end user and the like. Wherein the energy supply network may include a power supply network, a gas supply network, a cooling/heating network, etc.; the energy exchange link can comprise a cold-heat-electricity triple supply unit, a generator set, a boiler, an air conditioner, a heat pump and the like; the energy storage link can comprise electricity storage, gas storage, heat storage, cold storage and the like. The actual signals collected by the small signal board 300 include voltage signals, current signals and the like in the actual energy system, and the actual signals can be analog quantity signals or digital quantity signals. In this embodiment, the small signal board 300 may include 12 analog inputs, 4 analog outputs, 4 digital inputs and 4 digital outputs, where the analog input range of the small signal board 300 is 0V-5V, the analog output range is 0V-5V, the digital input range is 0V-24V, and the digital output range is 0V-24V.
The processing module 200 performs high-speed operation and processing on the actual signal collected by the small signal board 300, and transmits the processed actual signal to the control module 100. In particular, the processing module 200 may be a DSP (digital signal processor, digital signal processing) processor. The DSP processor can rapidly realize the processes of signal acquisition, conversion, filtering, estimation, enhancement, compression, identification and the like so as to obtain a signal form meeting the requirement. In this application, the DSP processor is a programmable signal processor so that a user can change the functions to be performed by the processor by programming according to the needs.
The OPC communication module 400 is connected with the simulation comprehensive energy system, and the control module 100 is connected with the OPC communication module 400 and collects simulation signals of the simulation comprehensive energy system through the OPC communication module 400. OPC (OLE for Process Control) is a standard interface and procedure for software data exchange, which is independent of manufacturers, mainly solves the data exchange problem of the process control system and the data source thereof, and can provide transparent data access between each application. In this embodiment, the simulation comprehensive energy system may be simulation software installed on a PC, and the control terminal is connected with the PC through an OPC technology to implement communication with the simulation comprehensive energy system. The simulation comprehensive energy system is a simulation prediction model constructed according to the comprehensive energy system and is used for researching an energy management and control strategy of the comprehensive energy system. The simulation signals may include simulation current signals, simulation voltage signals, etc. of the simulation integrated energy system.
After receiving the simulation signal and the actual signal, the control module 100 processes the simulation signal and the actual signal, and then outputs a control strategy according to the processed simulation signal and the actual signal and the embedded strategy table. The embedded policy table is a database for storing configuration of various devices in the comprehensive energy system, and because the comprehensive energy system is complex, the items to be configured are also more, and the policy table can integrate important configuration functions in the system into various configuration modules so as to quickly generate a control policy. The control module 100 also generates control instructions according to the control strategy, and outputs the corresponding control instructions to the simulation comprehensive energy system and the comprehensive energy system through the OPC communication module 400 and the small signal board 300 respectively, so as to realize full utilization of different kinds of energy sources in the energy supply link, improve the energy efficiency in the energy utilization link and reduce the cost. It can be understood that when a certain module is added or reduced in the integrated energy system, the simulation integrated energy system correspondingly increases or reduces a certain module, so that the control module 100 collects signals of the integrated energy system and the simulation integrated energy system in real time, selects a control strategy according to the collected signals and the strategy table, generates a control instruction according to the control strategy, and issues the control instruction to the integrated energy system and the simulation integrated energy system, thereby verifying the dynamic operation effect of the system in real time.
The control terminal of the integrated energy system provided in the above embodiment can establish connection between the integrated energy system and the simulated integrated energy system by means of strong computing power of the control module 100 and the processing module 200 by providing the OPC communication module 400 and the small signal board 300. The control terminal can collect simulation signals of the simulation comprehensive energy system through the OPC communication module 400 and collect actual signals of the comprehensive energy system through the small signal board 300, output a control strategy according to the collected simulation signals and the actual signals and an embedded strategy table, and output corresponding control instructions to the simulation comprehensive energy system and the comprehensive energy system according to the control strategy so as to fully utilize different types of energy, improve energy utilization efficiency and reduce energy consumption cost.
In one embodiment, the physical interface of the small signal board 300 includes an SPI (Serial Peripheral Interface, serial peripheral) communication interface, the control terminal is connected with the integrated energy system through the SPI communication interface, and the actual signal of the integrated energy system is collected, and the SPI interface can be expanded by a user as required. Referring to fig. 2, the small signal board 300 includes an analog-to-digital conversion unit 310 and a level conversion unit 320. The analog-to-digital conversion unit 310 is used for converting the acquired analog quantity signal into a digital quantity signal for processing by the processing module 200. Because the input/output logic is often inconsistent in the system due to the introduction of the low voltage logic in each electronic circuit of the integrated energy system, the level conversion unit 320 is required to perform level conversion processing, so that the voltage threshold values of the signals are the same, and the processing module 200 processes the signals.
The physical communication interface of the small signal board 300 of the control terminal of the integrated energy system provided in the above embodiment adopts an SPI communication interface, so that a user can expand the interface as required, and realize connection with various external devices. In addition, by providing the OPC communication module 400 and the small signal board 300, a connection between the integrated energy system and the simulated integrated energy system can be established by means of strong computing power of the control module 100 and the processing module 200. The control terminal of the comprehensive energy system can output a control strategy according to the acquired simulation signals and actual signals and the embedded strategy table, and output corresponding control instructions to the simulation comprehensive energy system and the comprehensive energy system according to the control strategy, so that the full utilization of different types of energy sources is realized, the energy utilization efficiency is improved, and the energy consumption cost is reduced.
In one embodiment, referring to fig. 2, the processing module 200 includes an outlier rejection unit 210, a feature extraction unit 220, a filtering unit 230, and a data transformation unit 240.
The outlier removing unit 210 is configured to remove outliers in the actual signal. It may be understood that the abnormal value removing unit 210 stores threshold intervals of each signal, for example, a voltage threshold interval, a current threshold interval, and the like, the abnormal value removing unit 210 compares each type of received actual signal with the threshold interval, when one or more actual signals are out of the threshold interval, it may be determined that the signal out of the threshold interval is an abnormal signal, and the abnormal value removing unit 210 deletes the abnormal signal.
The feature extraction unit 220 performs feature extraction on the actual signal with the outlier removed, for example, performs fourier transform on the voltage signal or the current signal, to obtain a phase spectrum, an amplitude spectrum, and a frequency spectrum, extracts a phase, an amplitude, a frequency, and the like, and may also calculate device power according to the signal feature.
The filtering unit 230 filters the signal after the feature extraction, and filters out the data signal within a certain range, so as to achieve the purpose of selective transmission.
The data transformation unit 240 is configured to process various actual signals, to unify the dimensions of the variables, to make the variables normally distributed as much as possible, and to transform the nonlinear relationship between the variables into a linear relationship for the subsequent processing by the control module 100.
Further, the processing module 200 may further include a storage unit, configured to store the collected actual signal, so as to implement data backup.
In the control terminal of the integrated energy system provided in the above embodiment, the control module 100 may collect the actual signal of the integrated energy system through the processing module 200, and the processing module 200 may process the actual signal first and then transmit the processed signal to the control module 200, thereby reducing the data processing requirement on the control module 100 and improving the efficiency of the control module 100. In addition, by providing the OPC communication module 400 and the small signal board 300, a connection between the integrated energy system and the simulated integrated energy system can be established by means of strong computing power of the control module 100 and the processing module 200. The control terminal can collect simulation signals of the simulation comprehensive energy system and actual signals of the comprehensive energy system, output a control strategy according to the collected simulation signals and actual signals and an embedded strategy table, and output corresponding control instructions to the simulation comprehensive energy system and the comprehensive energy system according to the control strategy so as to fully utilize different types of energy, improve energy utilization efficiency and reduce energy consumption cost.
In one embodiment, the control module 100 includes a data processing unit 110. After the control module 100 receives the simulation signal and the processed actual signal, the data processing unit 110 converts the simulation signal and the actual signal into the same data type, for example, all floating point data in the simulation signal and the actual signal are converted into shaping data and then processed. The control module 100 is further provided with a policy unit 120, which is used for storing a pre-written control policy; the control strategy is a mechanism for configuring the setting of the comprehensive energy system, and can help a user to set the comprehensive energy system and the simulation comprehensive energy system so as to achieve the optimal energy consumption utilization effect. The policy unit 120 stores a plurality of control policies pre-written according to actual situations, so that the data processing unit 110 can select according to requirements. The selection of the control strategy is based on the parameter configuration in the strategy table on the one hand, and on the other hand, on the acquired actual signals and simulation signals. The data processing unit 110 outputs a corresponding control strategy according to the processed simulation signal and the actual signal combined with the embedded strategy table. The data processing unit 110 is further configured to generate a control instruction by using the operation control policy, and issue the control instruction to the integrated energy system and the simulated integrated energy system to verify the dynamic operation effect of the system. Specifically, the hardware structure of the control module 100 in this embodiment may adopt an ARM processor, and the ARM processor has the advantages of low power consumption, high performance and low cost, and is programmable, and a user can develop and verify a policy as required.
The control terminal of the integrated energy system provided in the above embodiment can rapidly output a control strategy according to the embedded strategy table by collecting signals of the integrated energy system and the simulated integrated energy system, and generate corresponding control instructions according to the control strategy, and respectively issue the control instructions to the simulated integrated energy system and the integrated energy system through the OPC communication module 400 and the small signal board 300, so as to realize full utilization of different types of energy, improve energy utilization efficiency, and reduce energy consumption cost.
In one embodiment, the physical interface of the OPC communication module 400 connected to the PC equipped with the integrated energy system may also be an SPI communication interface, and the control module 100 may be connected to the PC equipped with the integrated energy system through the SPI communication interface and read the simulation signals of the integrated energy system. Because the OPC communication module adopts the SPI communication interface, a user can expand the SPI communication interface according to the requirement.
Further, communication between the control module 100 and the processing module 200, between the processing module 200 and the small signal board 300, and between the control module 100 and the OPC communication module 400 may also be performed through an SPI communication interface, and the communication interface may be expandable.
The control terminal of the integrated energy system provided in the above embodiment enables the simulated integrated energy system to be connected to the control terminal by setting the OPC communication module, and the physical communication interface of the OPC communication module 400 adopts the SPI communication interface, so that the user can expand the SPI interface according to the requirements. In addition, by providing the OPC communication module 400 and the small signal board 300, a connection between the integrated energy system and the simulated integrated energy system can be established by means of strong computing power of the control module 100 and the processing module 200. The control terminal can collect simulation signals of the simulation comprehensive energy system and actual signals of the comprehensive energy system, output a control strategy according to the collected simulation signals and actual signals and an embedded strategy table, and output corresponding control instructions to the simulation comprehensive energy system and the comprehensive energy system according to the control strategy so as to fully utilize different types of energy, improve energy utilization efficiency and reduce energy consumption cost.
In one embodiment, referring to fig. 2, the processing module 200 further includes a first clock unit 250, where the first clock unit 250 is used to synchronize the circuits in the processing module 200. The control module 110 includes a second clock unit 130, and the second clock unit 130 is used to synchronize the circuits in the control module 110. The processing module 200 and the control module 100 communicate using the SPI communication protocol, and correct the first clock unit 250 and the second clock unit 130 at preset time intervals, respectively, so that the first clock unit 250 and the second clock unit 130 remain synchronized. In this embodiment, the maximum time error between the processing module 200 and the control module 100 must not exceed the minimum simulation step size of the integrated energy system, which is typically 5ms.
The control terminal of the integrated energy system provided in the above embodiment, the processing module 200 and the control module 100 may communicate through the SPI protocol, and by setting the first clock unit 250 and the second clock unit 130 in the processing module 200 and the control module 100, respectively, the processing module 200 and the control module 100 maintain synchronization through the communication of the first clock unit 250 and the second clock unit 130, thereby ensuring clock accuracy of signals collected by the small signal board 300 and the OPC communication module 400.
In one embodiment, referring to fig. 3, the control terminal of the integrated energy system further includes a power module 500 connected to the small signal board 300, the OPC communication module 400, the processing module 200 and the control module 100 for supplying power to the control terminal of the integrated energy system. The power module 500 includes a dc power supply unit 510 and an ac power supply unit 520, and may be powered by one of the power supply units 510 when the other power supply unit fails. It can be understood that the power module 500 further includes a detection unit and a switching unit, where the detection unit and the switching unit are both connected to the dc power supply unit 510 and the ac power supply unit 520. The detection unit is used for detecting whether the power supply unit which is supplying power is damaged, and if so, the detection unit controls the switching unit to switch the other power supply unit to supply power for the control terminal. In this embodiment, the dc current 510 may be a dc battery pack, and the voltage of the dc battery pack may be 12V, and the capacity may be 2200mAh, so as to ensure that the control terminal can run for more than 2 hours. The ac power supply unit 520 may be a 220V380V ac power interface, which is used to connect to an external ac power source, and to supply power to the control terminal with the external ac power source.
The power module 5100 of the control terminal of the integrated energy system provided in the above embodiment includes both a dc power supply unit 510 and an ac power supply unit 520, and when one of the power supply units is damaged, the other power supply unit may be used to supply power, so as to realize power standby.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (6)
1. The control terminal of the comprehensive energy system is characterized by comprising a control module, a processing module, a small signal board and an OPC communication module;
the small signal board is connected with the comprehensive energy system and is used for collecting actual signals of the comprehensive energy system and sending the actual signals to the processing module, and the processing module processes the actual signals and sends the processed actual signals to the control module; the comprehensive energy system comprises an energy supply network, an energy exchange link, an energy storage link and an end user; the processing module comprises an abnormal value removing unit, a characteristic extracting unit, a filtering unit and a data conversion unit, wherein the abnormal value removing unit is used for removing abnormal values in the actual signals according to a preset signal interval; the characteristic extraction unit is connected with the outlier rejection unit and is used for extracting the characteristics of the actual signals; the filtering unit is connected with the feature extraction unit and is used for filtering the signals after feature extraction; the data conversion unit is connected with the filtering unit and is used for carrying out data conversion on the filtered signals;
the OPC communication module is connected with the simulation comprehensive energy system, and the control module is connected with the OPC communication module and collects simulation signals of the simulation comprehensive energy system through the OPC communication module;
the control module is used for outputting a control strategy according to the simulation signal, the processed actual signal and a preset strategy table, generating a control instruction according to the control strategy, and respectively transmitting the control instruction to the simulation comprehensive energy system and the comprehensive energy system through the OPC communication module and the small signal board; the preset strategy table is a database for storing the configuration of various devices in the comprehensive energy system; the control module comprises a data processing unit, wherein the data processing unit is used for converting the simulation signal and the actual signal into the same data type and processing the same data type; the control module further comprises a strategy unit for storing a plurality of control strategies written in advance; the data processing unit outputs a corresponding control strategy according to the strategy table, the simulation signal and the actual signal, and generates a corresponding control instruction according to the control strategy; the OPC communication module is connected with the control module through an SPI communication interface; the small signal board is connected with the processing module through the SPI communication interface; the processing module is connected with the control module through the SPI communication interface.
2. The control terminal of the integrated energy system of claim 1, wherein the processing module includes a first clock unit and the control module includes a second clock unit, the processing module and the control module communicating via the SPI communication interface to keep the first clock unit and the second clock unit synchronized.
3. The control terminal of the integrated energy system according to claim 2, wherein the small signal board comprises an analog-to-digital conversion unit and a level conversion unit connected to the analog-to-digital conversion unit, the analog-to-digital conversion unit is used for performing analog-to-digital conversion on an input actual signal, and the level conversion unit is used for converting a voltage domain of the actual signal into a consistent voltage domain.
4. The control terminal of the integrated energy system according to claim 3, wherein the simulated integrated energy system is disposed on a PC, and the OPC communication module is connected to the PC through the SPI communication interface.
5. The control terminal of the integrated energy system of claim 1, further comprising a power module for powering the control terminal of the integrated energy system.
6. The control terminal of the integrated energy system of claim 5, wherein the power module comprises a dc power supply unit and an ac power supply unit, the dc power supply unit connecting the control module, the processing module, the small signal board, and the OPC communication module; the alternating current power supply unit is connected with the control module, the processing module, the small signal board and the OPC communication module.
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