Storage medium, desalination and dehydration rate online monitoring method, device, system and equipment

Abstract

The application discloses a storage medium, a desalination and dehydration rate online monitoring method, device, system and equipment, wherein the method comprises the following steps: acquiring working condition parameter data of an electric desalination system; acquiring voltage data and current data of a primary side or a secondary side of an electric desalination transformer in real time; calculating a current resistance value and a current capacitance between electrode plates of an electric desalination tank according to the voltage and the current of the voltage data and the current data; calculating current dielectric loss angle data according to the current resistance value and the current capacitance; and determining whether the current desalination and dehydration of the electric desalination system meets the standard or not according to the current dielectric loss angle data or the current resistance value with the standard dielectric loss angle data and the standard resistance value as references. The application does not need to sample and analyze crude oil in a desalination tank, so that the timeliness of desalination and dehydration rate monitoring can be greatly improved, and then the safe operation of subsequent equipment (such as an atmospheric and vacuum distillation unit) is facilitated.

Description

Technical Field

[0001] This invention relates to the field of crude oil processing, and in particular to storage media, methods, devices, systems and equipment for online monitoring of desalination and dehydration rates. Background Technology

[0002] Crude oil contains a large amount of water, which contains dissolved salts such as NaCl, CaCl2, and MgCl2, as well as other impurities. These substances often cause severe emulsification of crude oil, especially heavy oil and other low-quality petroleum products, leading to severe corrosion or scaling in refining units. Therefore, crude oil needs to undergo desalting / dehydration treatment before entering refining units to process it into various petroleum products, so that the volume fraction of water in the crude oil is less than 0.2% and the mass concentration of salts is less than 3 mg / L.

[0003] Electrostatic desalting (ESD) units are commonly used in oil fields and refineries, and are divided into AC or DC ESD units. Most ESD units are horizontal tank-shaped structures with parallel vertical or horizontal metal electrode plates inside, maintaining a certain pressure and temperature. Crude oil and water are injected from the bottom; the water dissolves the salts in the crude oil. The external power supply uses low-voltage AC power input at industrial frequency, which is stepped up by a transformer to generate 20-35kV high voltage, directly or via half-wave rectification, and input to the electrode plates in the ESD tank, forming an AC or DC electric field. The electric field of the electrode plates drives the water and salt to aggregate into large particles, which then settle to the bottom of the tank. The desalted crude oil is drawn out from the top of the tank. In refineries, ESD typically involves 2-3 stages.

[0004] The inventors discovered through research that the existing technology of using sampling analysis to determine the desalination effect of crude oil has at least the following drawbacks:

[0005] Excessive sampling and analysis time can lead to poor timeliness, which in turn affects the safe operation of subsequent equipment (such as atmospheric and vacuum distillation units).

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] The purpose of this invention is to improve the timeliness of detecting the desalting and dehydration effect of crude oil.

[0008] This invention provides a method for online monitoring of desalination and dehydration rate, comprising the following steps:

[0009] S11. Obtain the operating condition parameter data of the electric desalination system. The operating condition parameter data includes the rated power, primary side rated voltage, secondary side rated voltage, rated current, no-load loss, no-load current and short-circuit impedance of the electric desalination transformer, as well as the standard dielectric loss angle data and standard resistance value when the electric desalination system generates qualified desalted and dehydrated crude oil.

[0010] S12. Real-time acquisition of voltage and current data on the primary or secondary side of the electric desalination transformer;

[0011] S13. Calculate the current resistance and current capacitance between the electrode plates of the electro-desalination tank based on the fundamental amplitude and phase of the voltage and current in the voltage and current data.

[0012] S14. Calculate the current dielectric loss angle data based on the current resistance value and the current capacitance;

[0013] S15. Using the standard dielectric loss angle data and the standard resistance value as references, determine whether the current desalination and dehydration of the electro-desalination system meets the standard based on the current dielectric loss angle data and / or the current resistance value.

[0014] Preferably, in this invention, the standard dielectric loss angle data is obtained through analysis and testing of the actual operating data of the electro-desalination system.

[0015] Preferably, the calculation formula for calculating the current resistance and current capacitance between the electrode plates of the electro-desalination tank based on the fundamental amplitude and phase of the voltage and current in the voltage and current data in the present invention includes:

[0016] ;

[0017] ;

[0018] in, This refers to the resistance between the electrode plates. This refers to the capacitance between the electrode plates. This is the secondary voltage of the electric desalination transformer. This refers to the secondary current of the electric desalination transformer. ω is the angular frequency of the alternating electric field.

[0019] Preferably, in this invention, the calculation formula for calculating the current dielectric loss angle data based on the current resistance and the current capacitance includes:

[0020] ;in, This is the dielectric loss angle;

[0021] or,

[0022] ;

[0023] in, This refers to the secondary reactive current of the electric desalination transformer. This refers to the active current of the secondary winding of the desalination transformer.

[0024] Preferably, in this invention, it further includes:

[0025] When the current resistance is greater than a first preset value, or when the current dielectric loss angle data is less than a second preset value, a control command for a normally closed switch is generated; the normally closed switch is used to cut off the power supply to the transformer.

[0026] In another aspect of the present invention, an online monitoring device for desalination and dehydration rate is also provided, comprising:

[0027] The operating condition acquisition unit is used to acquire operating condition parameter data of the electric desalination system. The operating condition parameter data includes the rated power, primary side rated voltage, secondary side rated voltage, rated current, no-load loss, no-load current and short-circuit impedance of the electric desalination transformer, as well as the standard dielectric loss angle data and standard resistance value when the electric desalination system generates qualified desalted and dehydrated crude oil.

[0028] The real-time acquisition unit is used to acquire voltage and current data on the primary or secondary side of the electric desalination transformer in real time.

[0029] The first calculation unit is used to calculate the current resistance value and current capacitance between the electrode plates of the electro-desalination tank based on the fundamental amplitude and phase of the voltage and current in the voltage data and the current data.

[0030] The second calculation unit is used to calculate the current dielectric loss angle data based on the current resistance value and the current capacitance.

[0031] The result generation unit is used to determine whether the current desalination and dehydration of the electro-desalination system meets the standard, based on the standard dielectric loss angle data and the standard resistance value, and according to the current dielectric loss angle data and / or the current resistance value.

[0032] Preferably, in this invention, the standard dielectric loss angle data is obtained through analysis and testing of the actual operating data of the electro-desalination system.

[0033] Preferably, the calculation formula for calculating the current resistance and current capacitance between the electrode plates of the electro-desalination tank based on the fundamental amplitude and phase of the voltage and current in the voltage and current data in the present invention includes:

[0034] ;

[0035] ;

[0036] in, This refers to the resistance between the electrode plates. This refers to the capacitance between the electrode plates. This is the secondary voltage of the electric desalination transformer. This refers to the secondary current of the electric desalination transformer. ω is the angular frequency of the alternating electric field.

[0037] Preferably, in this invention, the calculation formula for calculating the current dielectric loss angle data based on the current resistance and the current capacitance includes:

[0038] ;in, This is the dielectric loss angle;

[0039] or,

[0040] ;

[0041] in, This refers to the secondary reactive current of the electric desalination transformer. This refers to the active current of the secondary winding of the desalination transformer.

[0042] Preferably, in this invention, it further includes:

[0043] The control unit is used to generate a control command for a normally closed switch when the current resistance is greater than a first preset value, or when the current dielectric loss angle data is less than a second preset value; the normally closed switch is used to cut off the power supply to the electric desalination transformer.

[0044] In another aspect of the present invention, an online monitoring system for desalination and dehydration rate is also provided, comprising: a voltage monitoring unit, a current monitoring unit, and the aforementioned online monitoring device for desalination and dehydration rate;

[0045] The voltage monitoring unit and the current monitoring unit are connected to the primary or secondary circuit of the electric desalination transformer and are used to acquire voltage and current data of the primary or secondary side of the electric desalination transformer in real time.

[0046] Preferably, in this invention, it further includes:

[0047] The primary coil of the electric desalination transformer is connected to an AC power supply circuit with a normally closed switch.

[0048] The online monitoring device for desalination and dehydration rate also includes:

[0049] The control unit is used to generate a control command for a normally closed switch when the current resistance is greater than a first preset value, or when the current dielectric loss angle data is less than a second preset value; the normally closed switch is used to cut off the power supply to the electric desalination transformer.

[0050] In another aspect of this invention, an online monitoring device for desalination and dehydration rate is also provided, comprising:

[0051] Memory, used to store computer programs;

[0052] A processor is used to invoke and execute the computer program to implement the various steps of the online monitoring method for desalination and dehydration rate as described in any of the preceding claims.

[0053] In another aspect of the present invention, a storage medium is also provided, on which a computer program is stored, which, when executed by a processor, implements the various steps of the online monitoring method for desalination and dehydration rate as described in any of the preceding claims.

[0054] The online monitoring device for desalination and dehydration rate includes a computer program stored on a medium. The computer program includes program instructions. When the program instructions are executed by the computer, the computer performs the methods described in the above aspects and achieves the same technical effect.

[0055] Compared with the prior art, the present invention has the following beneficial effects:

[0056] As can be seen from the above scheme, the online monitoring method for desalination and dehydration rate provided by the present invention predetermines the standard dielectric loss angle data and standard resistance value when the electric desalination system generates qualified desalinated and dehydrated crude oil, and then calculates the current resistance value and dielectric loss angle data based on the real-time voltage and current data of the electric desalination transformer in the electric desalination system; then, the standard dielectric loss angle data and standard resistance value are used as a reference to determine whether the current desalination and dehydration has met the standard. Since the present invention can calculate the corresponding desalination and dehydration rate based on the real-time voltage and current data of the electric desalination transformer in the electric desalination system, it is not necessary to sample and analyze the crude oil in the desalination tank, thus greatly improving the timeliness of desalination and dehydration rate monitoring, which is beneficial to the safe operation of subsequent equipment (such as atmospheric and vacuum distillation units).

[0057] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, and to make the above and other objects, technical features and advantages of the present invention easier to understand, one or more preferred embodiments are listed below and described in detail with reference to the accompanying drawings. Attached Figure Description

[0058] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0059] Figure 1 This is a flowchart illustrating the steps of the online monitoring method for desalination and dehydration rate described in this invention.

[0060] Figure 2 This is a schematic diagram of the online monitoring system for desalination and dehydration rate described in this invention;

[0061] Figure 3 This is another step diagram of the online monitoring method for desalination and dehydration rate described in this invention;

[0062] Figure 4 This is a schematic diagram of the online monitoring device for desalination and dehydration rate described in this invention;

[0063] Figure 5 This is a schematic diagram of the online monitoring device for desalination and dehydration rate described in this invention. Detailed Implementation

[0064] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0065] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0066] In this document, the terms "first," "second," etc., are used to distinguish two different elements or parts, and are not used to define specific positions or relative relationships. In other words, in some embodiments, the terms "first," "second," etc., can also be used interchangeably. Example 1

[0067] To improve the timeliness of desalination and dehydration rate monitoring and facilitate the safe operation of subsequent equipment (such as atmospheric and vacuum distillation units), refer to Figure 1 This invention provides an online monitoring method for desalination and dehydration rate, comprising the following steps:

[0068] S11. Obtain the operating condition parameter data of the electric desalination system. The operating condition parameter data includes the rated power, primary side rated voltage, secondary side rated voltage, rated current, no-load loss, no-load current and short-circuit impedance of the electric desalination transformer, as well as the standard dielectric loss angle data and standard resistance value when the electric desalination system generates qualified desalted and dehydrated crude oil.

[0069] The inventive concept of this invention includes: pre-determining the standard dielectric loss angle data and standard resistance value when the electro-desalting system generates qualified desalted and dehydrated crude oil; then calculating the current resistance value and dielectric loss angle data based on the real-time voltage and current data of the electro-desalting transformer in the electro-desalting system; and then using the standard dielectric loss angle data and standard resistance value as a reference to determine whether the current desalting and dehydration has met the standards.

[0070] Based on the above-mentioned inventive concept, in this step, it is necessary to first obtain various operating condition parameter data of the electric desalination system, which is the monitoring object, as the basis for calculation. Specifically, this includes the rated power of the electric desalination transformer, the rated voltage value of the primary side, the rated voltage value of the secondary side, the rated current value, the no-load loss, the no-load current, and the short-circuit impedance. In addition, it is also necessary to obtain the standard dielectric loss angle data and standard resistance value when the electric desalination system generates qualified desalinated and dehydrated crude oil.

[0071] In practical applications, standard dielectric loss angle data and standard resistance values ​​can be obtained by analyzing, testing, and calculating the actual operating data of the electro-desalination system. Specifically, this can be achieved through:

[0072] After desalination and dehydration are completed, the resistance between the electrode plates is usually greater than 20kΩ.

[0073] After dehydration, the dielectric constant of the oil-water mixture is approximately 4.5~10. The electrode plate area is 0.8 square meters per group, with a total of 45 groups and a total area of ​​36 square meters. The distance between the electrode plates is 0.15 meters, and the capacitance between the electrode plates is... C for:

[0074]

[0075] The dielectric constant of the oil-water mixture. Total area of ​​electrode plates Distance between electrode plates

[0076] The typical capacitance range is 9.56~21.24nF.

[0077] After completing the electro-desalination and dehydration, the dielectric loss angle can usually be estimated based on the resistance and capacitance, and is typically less than 17°.

[0078] S12. Real-time acquisition of voltage and current data on the primary or secondary side of the electric desalination transformer;

[0079] The online monitoring method for desalination and dehydration rate in this embodiment of the invention can rely on, for example... Figure 2 The desalination and dehydration rate is achieved through an online monitoring system as shown. Figure 2 In the online monitoring system for desalination and dehydration rate shown, the circuit formed by the power supply 01 (e.g., AC power supply) and the primary side of the electric desalination transformer 02 includes a normally closed switch 03 and a voltage regulating and current limiting unit 04; the current monitoring unit 05 and the voltage monitoring unit 06 can be set in the circuit on the primary side of the electric desalination transformer 02 or in the circuit on the secondary side of the electric desalination transformer 02.

[0080] Through the current monitoring unit 05 and the voltage monitoring unit 06, the corresponding voltage and current data can be acquired in real time during the production process of the electro-desalination system; which may include the fundamental amplitude and phase of the voltage and current.

[0081] S13. Calculate the current resistance and current capacitance between the electrode plates of the electro-desalination tank based on the fundamental amplitude and phase of the voltage and current in the voltage and current data.

[0082] In this embodiment of the invention, the current resistance and capacitance between the electrode plates of the electro-desalting tank are calculated based on the fundamental amplitude and phase of the voltage and current in the voltage and current data. In practical applications, the current resistance between the electrode plates of the electro-desalting tank 08 is calculated. and current capacitance The formula can include:

[0083] ;

[0084] ;

[0085] in, This refers to the resistance between the electrode plates. This refers to the capacitance between the electrode plates. This is the secondary voltage of the electric desalination transformer. This refers to the secondary current of the electric desalination transformer. ω is the angular frequency of the alternating electric field.

[0086] S14. Calculate the current dielectric loss angle data based on the current resistance value and the current capacitance;

[0087] Next, it can also calculate the current dielectric loss angle data based on the current resistance and current capacitance values; in practical applications, the formula for calculating the current dielectric loss angle data can include:

[0088] ;in, This is the dielectric loss angle;

[0089] or,

[0090]

[0091] in, This refers to the secondary reactive current of the electric desalination transformer. This refers to the active current of the secondary winding of the desalination transformer.

[0092] It should be noted that when the current monitoring unit 05 and the voltage monitoring unit 06 are installed in the circuit on the primary side of the desalination transformer 02, the monitoring data (voltage data and current data) need to be adjusted to account for the influence of the parameters of the desalination transformer 02.

[0093] When calculating the current resistance value, the excitation resistance and short-circuit resistance need to be deducted. When calculating the current capacitance, the effects of excitation reactance and short-circuit impedance need to be considered.

[0094] S15. Using the standard dielectric loss angle data and the standard resistance value as references, determine whether the current desalination and dehydration of the electro-desalination system meets the standard based on the current dielectric loss angle data and / or the current resistance value.

[0095] This step also involves data processing to determine whether the current desalination and dehydration of the electro-desalination system meets the standards.

[0096] In practical applications, a resistance difference threshold can be preset. Then, when the difference between the current resistance value and the standard medium is less than the above resistance difference threshold, it is determined that the current desalination of the electro-desalination system has met the standard. In addition, it can also include setting a medium loss angle data difference threshold. Then, when the difference between the current medium loss angle data and the standard medium loss angle data is less than the above medium loss angle data difference threshold, it is determined that the current dehydration of the electro-desalination system has met the standard.

[0097] In summary, the online monitoring method for desalination and dehydration rate provided by this invention predetermines the standard dielectric loss angle data and standard resistance value when the electric desalination system generates qualified desalinated and dehydrated crude oil. Then, it calculates the current resistance value and dielectric loss angle data based on the real-time voltage and current data of the electric desalination transformer in the electric desalination system. The standard dielectric loss angle data and / or standard resistance value are then used as a reference to determine whether the current desalination and dehydration has met the standards. Since this invention can calculate the corresponding desalination and dehydration rate based on the real-time voltage and current data of the electric desalination transformer in the electric desalination system, it eliminates the need for sampling and analysis of the crude oil in the desalination tank. Therefore, it greatly improves the timeliness of desalination and dehydration rate monitoring, which is beneficial to the safe operation of subsequent equipment (such as atmospheric and vacuum distillation units).

[0098] Furthermore, through the embodiments of the present invention, manual operation procedures can be effectively reduced, the stability of the device can be improved, and the dehydration requirements of various oils can be adapted.

[0099] Example 2

[0100] Based on Embodiment 1, preferably, such as Figure 3 As shown, the embodiments of the present invention may further include the following steps:

[0101] S16. When the current resistance is greater than a first preset value, or when the current dielectric loss angle data is less than a second preset value, a control command for a normally closed switch is generated; the normally closed switch is used to cut off the power supply to the electric desalination transformer.

[0102] This step also involves data processing. When the current resistance is greater than the first preset value and the current dielectric loss angle data is less than the second preset value, a control command for normally closed switch 03 is generated.

[0103] This step allows the system to determine that the current desalination and dehydration of the electro-desalination system has met the standards, while simultaneously generating a control command for the normally closed switch 03 to cut off the power supply 01 to the electro-desalination transformer 02. This enables the electro-desalination system to automatically shut down in a timely manner, thereby achieving efficient and automatic operation of the device, reducing the energy consumption of the electro-desalination system, improving the stability of the device, and adapting to the dehydration and desalination requirements of various oil products.

[0104] In one embodiment of the present invention, the power of the electric desalination transformer is assumed to be 160kVA, the rated voltage on the low-voltage side is 380V, the rated voltage on the high-voltage side is 20kV, the rated current is 8A, the no-load loss is 750W, the no-load current is 1.8%, and the short-circuit impedance is 6.0%. The secondary voltage and current parameters of the electric desalination transformer 02 are obtained through monitoring and measurement as follows: , The current resistance value can be obtained through calculation. and current capacitance .

[0105] ;

[0106] ;

[0107] ;

[0108] Among them, the dielectric loss angle Based on the resistance and capacitance, the dielectric loss angle is estimated to be 10.11, indicating that the water content of the crude oil meets the requirements after electro-desalination.

[0109] In practical applications, a certain hysteresis can be set in the computing unit. When the monitored crude oil desalting and dehydration rate reaches a certain value, priority is given to values ​​greater than 10% (e.g., (≥22kΩ or tanδ≤11.12), the power supply 01 of the desalination transformer 02 is disconnected by the normally closed switch 03.

[0110] It should be noted that the specific implementation method and technical effect of the AC power control system of the electro-desalination system in the embodiments of the present invention can be referred to the power control device corresponding to Embodiment 1, and will not be repeated here.

[0111] Example 3

[0112] Corresponding to the method embodiment, another aspect of the present invention provides an online monitoring system for desalination and dehydration rate, including an online monitoring device for desalination and dehydration rate. Figure 4 This diagram illustrates the structure of an online monitoring device for desalination and dehydration rate provided in an embodiment of the present invention. The online monitoring device for desalination and dehydration rate is associated with... Figure 1 or Figure 3 The device corresponding to the online monitoring method for desalination and dehydration rate described in the corresponding embodiment is implemented through a virtual device. Figure 1 or Figure 3 In the corresponding embodiment, the online monitoring method for desalination and dehydration rate can be implemented by electronic devices, such as network devices, terminal devices, or servers.

[0113] Specifically, refer to Figure 2 In the online monitoring system for desalination and dehydration rate in this embodiment of the invention, the circuit formed by the power supply 01 (e.g., AC power supply) and the primary side of the electric desalination transformer 02 includes a normally closed switch 03 and a voltage regulating and current limiting unit 04; the current monitoring unit 05 and the voltage monitoring unit 06 can be set in the circuit on the primary side of the electric desalination transformer 02, or they can be set in the circuit on the secondary side of the electric desalination transformer 02.

[0114] Through the current monitoring unit 05 and voltage monitoring unit 06, relevant voltage and current data can be acquired in real time during the production process of the electro-desalination system; this data can include the fundamental amplitude and phase of the voltage and current. The main function of the voltage regulating and current limiting unit 04 is to prevent the electro-desalination transformer 02 from burning out under short-circuit conditions.

[0115] Among them, the online monitoring device for desalination and dehydration rate 07 includes:

[0116] The operating condition acquisition unit 11 is used to acquire the operating condition parameter data of the electric desalination system. The operating condition parameter data includes the rated power, primary side rated voltage, secondary side rated voltage, rated current, no-load loss, no-load current and short-circuit impedance of the electric desalination transformer 02, as well as the standard dielectric loss angle data and standard resistance value when the electric desalination system generates qualified desalted and dehydrated crude oil.

[0117] The real-time acquisition unit 12 is used to acquire voltage and current data on the primary or secondary side of the electric desalination transformer 02 in real time.

[0118] The first calculation unit 13 is used to calculate the current resistance value and current capacitance between the electrode plates of the electro-desalination tank 08 based on the fundamental amplitude and phase of the voltage and current in the voltage data and the current data.

[0119] The second calculation unit 14 is used to calculate the current dielectric loss angle data based on the current resistance value and the current capacitance.

[0120] The result generation unit 15 is used to determine whether the current desalination and dehydration of the electro-desalination system meets the standard, based on the standard dielectric loss angle data and the standard resistance value, and according to the current dielectric loss angle data or the current resistance value.

[0121] Furthermore, in this embodiment of the invention, the online monitoring device for desalination and dehydration rate 07 may further include:

[0122] The control unit 16 is used to generate a control command for the normally closed switch 03 when the current resistance is greater than a first preset value, or when the current dielectric loss angle data is less than a second preset value; the normally closed switch 03 is used to cut off the power supply to the electric desalination transformer.

[0123] It should be noted that the specific implementation methods and technical effects of the online monitoring system and device for desalination and dehydration rate in the embodiments of the present invention can be found by referring to... Figure 1 and Figure 2 The corresponding online monitoring methods for desalination and dehydration rates will not be elaborated here.

[0124] Example 4

[0125] Corresponding to the method embodiments, this invention also provides an online monitoring device for desalination and dehydration rate, such as a terminal or server. The server can be a standalone physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms. The terminal can be a smartphone, tablet, laptop, desktop computer, etc., but is not limited to these.

[0126] An example diagram of the hardware structure block diagram of the online monitoring device for desalination and dehydration rate provided in this application is shown below. Figure 5 As shown, it may include:

[0127] Processor 1, communication interface 2, memory 3, and communication bus 4;

[0128] The processor 1, communication interface 2, and memory 3 communicate with each other via communication bus 4.

[0129] Optionally, communication interface 2 can be an interface of a communication module, such as the interface of a GSM module;

[0130] Processor 1 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0131] Memory 3 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0132] Specifically, processor 1 is used to execute the computer program stored in memory 3 to perform the following steps:

[0133] S11. Obtain the operating condition parameter data of the electric desalination system. The operating condition parameter data includes the rated power, primary side rated voltage, secondary side rated voltage, rated current, no-load loss, no-load current and short-circuit impedance of the electric desalination transformer, as well as the standard dielectric loss angle data and standard resistance value when the electric desalination system generates qualified desalted and dehydrated crude oil.

[0134] S12. Real-time acquisition of voltage and current data on the primary or secondary side of the electric desalination transformer;

[0135] S13. Calculate the current resistance and current capacitance between the electrode plates of the electro-desalination tank based on the fundamental amplitude and phase of the voltage and current in the voltage and current data.

[0136] S14. Calculate the current dielectric loss angle data based on the current resistance value and the current capacitance;

[0137] S15. Using the standard dielectric loss angle data and the standard resistance value as references, determine whether the current desalination and dehydration of the electro-desalination system meets the standard based on the current dielectric loss angle data and / or the current resistance value.

[0138] Preferably, it may also include:

[0139] S16. When the current resistance is greater than a first preset value, or when the current dielectric loss angle data is less than a second preset value, a control command for a normally closed switch is generated; the normally closed switch is used to cut off the power supply to the electric desalination transformer.

[0140] The above-described product can perform the method provided in the embodiments of the present invention, and has the corresponding functional modules and beneficial effects for performing the method. Technical details not described in detail in this embodiment can be found in the online monitoring method for desalination and dehydration rate provided in the embodiments of the present invention. Example 5

[0141] In this embodiment of the invention, a storage medium is also provided, which can store a program suitable for execution by a processor, the program being used for:

[0142] S11. Obtain the operating condition parameter data of the electric desalination system. The operating condition parameter data includes the rated power, primary side rated voltage, secondary side rated voltage, rated current, no-load loss, no-load current and short-circuit impedance of the electric desalination transformer, as well as the standard dielectric loss angle data and standard resistance value when the electric desalination system generates qualified desalted and dehydrated crude oil.

[0143] S12. Real-time acquisition of voltage and current data on the primary or secondary side of the electric desalination transformer;

[0144] S13. Calculate the current resistance and current capacitance between the electrode plates of the electro-desalination tank based on the fundamental amplitude and phase of the voltage and current in the voltage and current data.

[0145] S14. Calculate the current dielectric loss angle data based on the current resistance value and the current capacitance;

[0146] S15. Using the standard dielectric loss angle data and the standard resistance value as references, determine whether the current desalination and dehydration of the electro-desalination system meets the standard based on the current dielectric loss angle data and / or the current resistance value.

[0147] Preferably, it may also include:

[0148] S16. When the current resistance is greater than a first preset value, or when the current dielectric loss angle data is less than a second preset value, a control command for a normally closed switch is generated; the normally closed switch is used to cut off the power supply to the electric desalination transformer.

[0149] Optionally, the refined and extended functions of the program can be found in the description above.

[0150] The above-described product can execute the methods provided in the embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the methods. Technical details not described in detail in this embodiment can be found in the methods provided in other embodiments of the present invention.

[0151] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0152] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. Furthermore, the couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0153] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0154] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0155] It should be understood that in the embodiments of this application, the claims, various embodiments, and features can be combined with each other to solve the aforementioned technical problems.

[0156] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0157] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. 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 this application. Therefore, this application is not to 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

1. A method for online monitoring of desalination and dehydration rate, characterized in that, Including the following steps: S11. Obtain the operating condition parameter data of the electric desalination system. The operating condition parameter data includes the rated power, primary side rated voltage, secondary side rated voltage, rated current, no-load loss, no-load current and short-circuit impedance of the electric desalination transformer, as well as the standard dielectric loss angle data and standard resistance value when the electric desalination system generates qualified desalted and dehydrated crude oil. S12. Real-time acquisition of voltage and current data on the primary or secondary side of the electric desalination transformer; S13. Calculate the current resistance and current capacitance between the electrode plates of the electro-desalination tank based on the fundamental amplitude and phase of the voltage and current in the voltage and current data. S14. Calculate the current dielectric loss angle data based on the current resistance value and the current capacitance value. The calculation formula is as follows: include: ;in, This is the dielectric loss angle; S15. Using the standard dielectric loss angle data and the standard resistance value as references, determine whether the current desalination and dehydration of the electro-desalination system meets the standard based on the current dielectric loss angle data and / or the current resistance value.

2. The online monitoring method for desalination and dehydration rate according to claim 1, characterized in that, The standard dielectric loss angle data was obtained through analysis and testing of the actual operating data of the electro-desalination system.

3. The online monitoring method for desalination and dehydration rate according to claim 1, characterized in that, The calculation formula for calculating the current resistance and current capacitance between the electrode plates of the electro-desalination tank based on the fundamental amplitude and phase of the voltage and current in the voltage and current data includes: ； ； in, This refers to the resistance between the electrode plates. This refers to the capacitance between the electrode plates. This is the secondary voltage of the electric desalination transformer. This refers to the secondary current of the electric desalination transformer. ω is the angular frequency of the alternating electric field.

4. The online monitoring method for desalination and dehydration rate according to claim 1, characterized in that, Also includes: When the current resistance is greater than a first preset value, or when the current dielectric loss angle data is less than a second preset value, a control command for a normally closed switch is generated. The normally closed switch is used to cut off the power supply to the electric desalination transformer.

5. An online monitoring device for desalination and dehydration rate, characterized in that, include: The operating condition acquisition unit is used to acquire operating condition parameter data of the electric desalination system. The operating condition parameter data includes the rated power, primary side rated voltage, secondary side rated voltage, rated current, no-load loss, no-load current and short-circuit impedance of the electric desalination transformer, as well as the standard dielectric loss angle data and standard resistance value when the electric desalination system generates qualified desalted and dehydrated crude oil. The real-time acquisition unit is used to acquire voltage and current data on the primary or secondary side of the electric desalination transformer in real time. The first calculation unit is used to calculate the current resistance value and current capacitance between the electrode plates of the electro-desalination tank based on the fundamental amplitude and phase of the voltage and current in the voltage data and the current data. The second calculation unit is used to calculate the current dielectric loss angle data based on the current resistance value and the current capacitance value. The calculation formula includes: ;in, This is the dielectric loss angle; The result generation unit is used to determine whether the current desalination and dehydration of the electro-desalination system meets the standard, based on the standard dielectric loss angle data and the standard resistance value, and according to the current dielectric loss angle data and / or the current resistance value.

6. The online monitoring device for desalination and dehydration rate according to claim 5, characterized in that, The standard dielectric loss angle data was obtained through analysis and testing of the actual operating data of the electro-desalination system.

7. The online monitoring device for desalination and dehydration rate according to claim 5, characterized in that, The calculation formula for calculating the current resistance and current capacitance between the electrode plates of the electro-desalination tank based on the fundamental amplitude and phase of the voltage and current in the voltage and current data includes: ； ； in, This refers to the resistance between the electrode plates. This refers to the capacitance between the electrode plates. This is the secondary voltage of the electric desalination transformer. This refers to the secondary current of the electric desalination transformer. ω is the angular frequency of the alternating electric field.

8. The online monitoring device for desalination and dehydration rate according to claim 5, characterized in that, Also includes: The control unit is used to generate a control command for a normally closed switch when the current resistance is greater than a first preset value, or when the current dielectric loss angle data is less than a second preset value. The normally closed switch is used to cut off the power supply to the electric desalination transformer.

9. An online monitoring system for desalination and dehydration rate, characterized in that, include: A voltage monitoring unit, a current monitoring unit, and, as described in any one of claims 5 to 8, an online monitoring device for desalination and dehydration rate; The voltage monitoring unit and the current monitoring unit are connected to the primary or secondary circuit of the electric desalination transformer and are used to acquire voltage and current data of the primary or secondary side of the electric desalination transformer in real time.

10. The online monitoring system for desalination and dehydration rate according to claim 9, characterized in that, Also includes: The primary coil of the electric desalination transformer is connected to an AC power supply circuit with a normally closed switch. The online monitoring device for desalination and dehydration rate also includes: The control unit is used to generate a control command for a normally closed switch when the current resistance is greater than a first preset value, or when the current dielectric loss angle data is less than a second preset value. The normally closed switch is used to cut off the power supply to the electric desalination transformer.

11. An online monitoring device for desalination and dehydration rate, characterized in that, include: Memory, used to store computer programs; A processor is configured to invoke and execute the computer program to implement the steps of the online monitoring method for desalination and dehydration rate as described in any one of claims 1 to 4.

12. A storage medium, characterized in that, Includes a software program adapted for execution by a processor of the steps of the online monitoring method for desalination and dehydration rate as described in any one of claims 1 to 4.

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