An integrated circuit system for submarine cables

Abstract

The present invention relates to the technical field of wind turbines, and in particular to an integrated circuit system applied to submarine cables. It includes: an FPGA control module, a JHS integrated circuit, a communication interface module, a multi-channel circuit, an alarm module, a circuit breaker and a cable interface; a temperature sensor is provided on the JHS integrated circuit, and a wireless temperature measurement receiving end is used to receive temperature data and send the temperature data to an industrial control computer, which is used to determine whether the temperature data is abnormal. When the temperature data is abnormal and causes a short circuit failure of the fan, the circuit breaker is controlled to be disconnected, and the alarm module is controlled to alarm. The present invention monitors the temperature of the submarine cable online throughout the entire process, and installs a circuit breaker between the fans, so that when a submarine cable fails, the circuit breaker can be cut off by remote operation, and the remaining wind turbine generator set can resume power generation after a short power outage, which greatly improves the stability of the operation of the wind turbine generator set.

Description

Background Art

[0002] Because submarine cables are used to transmit electricity in the sea, the actual application of the project must be considered when manufacturing the cables. The construction of submarine cable projects is mainly restricted by geographical conditions, marine engineering, construction equipment and other conditions. The project construction involves a wide range of technical fields, large investment scales, and complex construction technologies. The construction period can generally be divided into two stages. The pre-construction work mainly involves engineering design, submarine cable route selection, submarine cable manufacturing and transportation. The construction period mainly includes submarine cable route positioning, submarine cable laying, submarine cable protection, land equipment installation, testing and commissioning, project acceptance, etc.

[0003] However, in the prior art, since submarine cables are concealed projects, the temperature of the environment is uneven due to the limitations of cable installation and laying methods and landing methods. Seawater scouring and erosion can also cause the water-blocking performance of submarine cables to deteriorate and insulation to age, causing leakage current in the submarine cables, thereby causing the temperature at the fault point of the submarine cables to rise, and then causing breakdown accidents, resulting in huge economic losses and seriously affecting the operational safety of submarine cables. Therefore, how to provide an integrated circuit system for submarine cables is a technical problem that technicians in this field need to solve urgently. Summary of the invention

[0004] The purpose of the present invention is to provide an integrated circuit system applied to submarine cables. The present invention monitors the temperature of the submarine cables online throughout the entire process and installs circuit breakers between wind turbines, so that when a fault occurs in the submarine cable, the circuit breaker can be cut off by remote operation, and the remaining wind turbine generator sets can resume power generation after a short power outage, thereby greatly improving the stability of the operation of the wind turbine generator sets.

[0005] The present invention improves the prior art. As the submarine cable is a concealed project, the temperature of the environment is uneven. Factors such as seawater scouring and erosion may also cause the water-blocking performance of the submarine cable to deteriorate and the insulation to age, causing leakage current in the submarine cable, thereby causing the temperature to rise at the fault point of the submarine cable and causing a fault. The present invention sets a temperature sensor on the JHS integrated circuit to detect the temperature data of the JHS integrated circuit in real time and determine whether the temperature data is abnormal. When the temperature data is abnormal and causes a short circuit fault of the fan, the circuit breaker is controlled to be disconnected and the alarm module is controlled to alarm. The present invention can effectively monitor the temperature of the submarine cable online throughout the entire process and determine whether it is a fault, thereby ensuring the stable operation of the fan motor group.

[0006] The present invention improves the fault detection form of submarine cables in the prior art. The existing detection methods are all through detecting the current of the submarine cable. However, the current detection is not accurate because there are ions in seawater, and ions are conductive. Therefore, simple current detection is not accurate. The present invention detects the temperature of the submarine cable. Since the submarine cable generates leakage current, it will inevitably cause the temperature at the fault point of the submarine cable to rise, and the temperature rise is not affected by the ions in the seawater, but is compared with the temperature rise during normal operation. The healthy operation of the submarine cable is also effectively guaranteed through the form of temperature detection.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] An integrated circuit system applied to a submarine cable comprises: an FPGA control module, a JHS integrated circuit, a communication interface module, a multi-selection channel circuit, an alarm module, a circuit breaker and a cable interface; the transmission end of the FPGA control module is respectively connected to the JHS integrated circuit, the communication interface module and the transmission end of the multi-selection channel circuit; the output end of the FPGA control module is connected to the input end of the alarm module, and the circuit breaker is arranged between the fans connected to the integrated circuit of the submarine cable; wherein,

[0009] The JHS integrated circuit is provided with a temperature sensor, which is used to detect the temperature data of the JHS integrated circuit in real time, and send the temperature data to the wireless temperature measurement receiving end through wireless radio frequency, and the wireless temperature measurement receiving end is provided with an RS485 port;

[0010] The wireless temperature measurement receiving end is used to receive the temperature data and send the temperature data to the industrial control computer. The industrial control computer is used to determine whether the temperature data is abnormal. When the temperature data is abnormal and causes a short circuit fault in the fan, the circuit breaker is controlled to disconnect and the alarm module is controlled to sound an alarm.

[0011] In some embodiments of the present application, the industrial control computer is further used to establish an equivalent model of the electrical system of each of the wind turbines and an equivalent model of the generator, and perform short-circuit calculation according to the established equivalent model of the electrical system of the wind turbine and the equivalent model of the generator;

[0012] The temperature sensor is also used to obtain the fault temperature range of the fan when it has a short circuit fault;

[0013] The industrial computer is also used to calculate the tolerance time of the fan to the fault temperature when a short circuit fault occurs, and control the circuit breaker to open to cut off the circuit within the tolerance time.

[0014] In some embodiments of the present application, the temperature sensor is arranged in close contact with the JHS integrated circuit, and there are several temperature sensors;

[0015] The industrial computer is installed with a kepserver program. The industrial computer is also used to read the temperature value of the contacts of the circuit breaker through the OPC protocol, and to create a new data channel in the industrial computer to display the temperature value of the contacts of the circuit breaker on the industrial computer. When the temperature value reaches a preset warning threshold, the alarm module is controlled to sound an alarm in the form of a voice alarm.

[0016] In some embodiments of the present application, a preset fault temperature matrix T0 and a preset tolerance time matrix A are set in the industrial control computer. For the preset tolerance time matrix A, A(A1, A2, A3, A4) is set, where A1 is the first preset tolerance time, A2 is the second preset tolerance time, A3 is the third preset tolerance time, A4 is the fourth preset tolerance time, and A1<A2<A3<A4;

[0017] For the preset fault temperature matrix T0, set T0(T01, T02, T03, T04), wherein T01 is the first preset fault temperature, T02 is the second preset fault temperature, T03 is the third preset fault temperature, T04 is the fourth preset fault temperature, and 20°C<T01<T02<T03<T04<60°C;

[0018] The industrial computer is also used to select a corresponding tolerance time as the tolerance time of the fan to the fault temperature in the case of a short circuit fault calculated by the industrial computer according to the relationship between the fault temperature t of the fan obtained by the temperature sensor and the preset fault temperature matrix T0;

[0019] When t<T01, the fourth preset tolerance time A4 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer;

[0020] When T01≤t<T02, the third preset tolerance time A3 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer;

[0021] When T02≤t<T03, the second preset tolerance time A2 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer;

[0022] When T03≤t<T04, the first preset tolerance time A1 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer.

[0023] In some embodiments of the present application, the industrial control computer is also used to calculate the fault temperature of the equivalent model of the electrical system and the equivalent model of the generator during short circuit, and calculate the fault temperature during short circuit through the rotation speed of the generator and different values ​​of the crowbar resistance in the equivalent model of the generator, so as to obtain the fault temperature range of the fan during short circuit fault.

[0024] In some embodiments of the present application, the interface of the communication interface module is an RS-232 interface.

[0025] In some embodiments of the present application, the industrial computer is also used to control the circuit breaker to open when the temperature data is abnormal and causes a short circuit failure of the fan, so that the fans other than the fan with the short circuit failure can resume power generation after a short-term power outage.

[0026] In some embodiments of the present application, the industrial control computer is also used to obtain the temperature change trend of the contacts of the circuit breaker and the historical temperature change trend.

[0027] In some embodiments of the present application, the alarm module is in the form of a voice alarm, the alarm module adopts an ISD4002 chip and an SPI serial communication protocol, and the alarm module internally stores a pre-recorded alarm voice.

[0028] The present invention provides an integrated circuit system applied to a submarine cable. Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention detects the temperature of the entire submarine cable section in real time and installs a circuit breaker between the fans so that when the collector submarine cable fails, the circuit breaker can be cut off by remote operation, so that the remaining wind turbine generator sets can resume power generation after a short power outage, thereby improving the stability of the power supply of the wind turbine generator sets. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural block diagram of an integrated circuit system of a submarine cable in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the inner sides of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the prior art, since submarine cables are concealed projects, the temperature of the environment is uneven due to the limitations of cable installation and laying methods and landing methods. Factors such as seawater scouring and erosion will also cause the water-blocking performance of the submarine cable to deteriorate and the insulation to age, causing leakage current in the submarine cable, thereby causing the temperature at the fault point of the submarine cable to rise, and then causing a breakdown fault accident, resulting in huge economic losses and seriously affecting the operational safety of the submarine cable.

[0036] Therefore, the present invention provides an integrated circuit system applied to submarine cables, which monitors the temperature of the submarine cables online throughout the entire process and installs circuit breakers between wind turbines, so that when a submarine cable fails, the circuit breaker can be cut off by remote operation, and the remaining wind turbines can resume power generation after a short power outage, thereby greatly improving the stability of the operation of the wind turbines.

[0037] See also Figure 1As shown, the disclosed embodiment of the present invention provides an integrated circuit system applied to a submarine cable, comprising: an FPGA control module, a JHS integrated circuit, a communication interface module, a multi-selection channel circuit, an alarm module, a circuit breaker and a cable interface; the transmission end of the FPGA control module is respectively connected to the JHS integrated circuit and the communication interface module and the transmission end of the multi-selection channel circuit; the output end of the FPGA control module is connected to the input end of the alarm module, and the circuit breaker is arranged between the fans connected to the integrated circuit of the submarine cable; wherein,

[0038] The JHS integrated circuit is provided with a temperature sensor, which is used to detect the temperature data of the JHS integrated circuit in real time, and send the temperature data to the wireless temperature measurement receiving end through wireless radio frequency. The wireless temperature measurement receiving end is provided with an RS485 port;

[0039] The wireless temperature measurement receiver is used to receive temperature data and send the temperature data to the industrial control computer. The industrial control computer is used to determine whether the temperature data is abnormal. When the temperature data is abnormal and causes a short circuit fault in the fan, the circuit breaker is controlled to disconnect and the alarm module is controlled to alarm.

[0040] In a specific embodiment of the present application, the industrial control computer is also used to establish an equivalent model of the electrical system of each wind turbine and an equivalent model of the generator, and perform short-circuit calculation according to the established equivalent model of the electrical system of the wind turbine and the equivalent model of the generator;

[0041] The temperature sensor is also used to obtain the fault temperature range of the fan when it fails in a short circuit;

[0042] The industrial computer is also used to calculate the tolerance time of the fan to the fault temperature in the event of a short circuit fault, and control the circuit breaker to open to cut off the circuit within the tolerance time.

[0043] In a specific embodiment of the present application, the temperature sensor is bonded to the JHS integrated circuit, and there are several temperature sensors;

[0044] The kepserver program is installed on the industrial computer. The industrial computer is also used to read the temperature value of the circuit breaker contacts through the OPC protocol, and to create a new data channel in the industrial computer to display the temperature value of the circuit breaker contacts on the industrial computer. When the temperature value reaches the preset warning threshold, the alarm module is controlled to sound an alarm through voice alarm.

[0045] In a specific embodiment of the present application, a preset fault temperature matrix T0 and a preset tolerance time matrix A are set in the industrial control computer. For the preset tolerance time matrix A, A(A1, A2, A3, A4) is set, where A1 is the first preset tolerance time, A2 is the second preset tolerance time, A3 is the third preset tolerance time, A4 is the fourth preset tolerance time, and A1<A2<A3<A4;

[0046] For the preset fault temperature matrix T0, set T0(T01, T02, T03, T04), where T01 is the first preset fault temperature, T02 is the second preset fault temperature, T03 is the third preset fault temperature, T04 is the fourth preset fault temperature, and 20°C<T01<T02<T03<T04<60°C;

[0047] The industrial control computer is also used to select a corresponding tolerance time as the tolerance time of the fan to the fault temperature when the fan is short-circuited according to the relationship between the fault temperature t obtained by the temperature sensor and the preset fault temperature matrix T0 as calculated by the industrial control computer;

[0048] When t<T01, the fourth preset tolerance time A4 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer;

[0049] When T01≤t<T02, the third preset tolerance time A3 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer;

[0050] When T02≤t<T03, the second preset tolerance time A2 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer;

[0051] When T03≤t<T04, the first preset tolerance time A1 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer.

[0052] In a specific embodiment of the present application, the industrial control computer is also used to calculate the fault temperature of the equivalent model of the electrical system and the equivalent model of the generator during short circuit, and calculate the fault temperature during short circuit through the rotation speed of the generator and different values ​​of the crowbar resistance in the equivalent model of the generator, so as to obtain the fault temperature range of the fan during short circuit fault.

[0053] In a specific embodiment of the present application, the interface of the communication interface module is an RS-232 interface.

[0054] In a specific embodiment of the present application, the industrial computer is also used to control the circuit breaker to disconnect when the temperature data is abnormal and causes a short circuit failure in the fan, so that all fans except the fan with the short circuit failure can resume power generation after a short-term power outage.

[0055] In a specific embodiment of the present application, the industrial control computer is also used to obtain the temperature change trend of the contacts of the circuit breaker and the historical temperature change trend.

[0056] In a specific embodiment of the present application, the alarm module is in the form of a voice alarm, the alarm module adopts an ISD4002 chip and an SPI serial communication protocol, and the alarm module internally stores a pre-recorded alarm voice.

[0057] According to the first technical concept of the present invention, the present invention sets a temperature sensor on the JHS integrated circuit to detect the temperature data of the JHS integrated circuit in real time and determine whether the temperature data is abnormal. When the temperature data is abnormal and causes a short circuit fault of the wind turbine, the circuit breaker is controlled to disconnect and the alarm module is controlled to alarm. The present invention can effectively monitor the temperature of the submarine cable online throughout the entire process and determine whether there is a fault, thereby ensuring the stable operation of the wind turbine motor group.

[0058] According to the second technical concept of the present invention, the present invention detects the temperature of the submarine cable. Since the submarine cable generates leakage current, the temperature at the fault point of the submarine cable will inevitably rise, and the temperature rise is not affected by the ions in the seawater, but is compared with the temperature rise during normal operation. The healthy operation of the submarine cable is effectively guaranteed through temperature detection.

[0059] In summary, the present invention detects the temperature of the submarine cable in real time, installs a circuit breaker between the fans, and judges whether the temperature data is abnormal. When the temperature data is abnormal and causes a short circuit fault in the fan, the circuit breaker is controlled to disconnect, so that when the collector submarine cable fails, the circuit breaker can be cut off by remote operation, so that the remaining wind turbine generator sets can resume power generation after a short power outage. The tolerance time of the submarine cable is also determined by the fault temperature, and the circuit breaker is cut off in time according to the tolerance time, which improves the response efficiency and ensures the operational stability of the wind turbine generator set power supply.

[0060] The above is only an example of implementation of the present invention, but it cannot be used to limit the scope of the present invention. Any structural changes made according to the present invention should be regarded as falling within the protection scope of the present invention and subject to restrictions as long as they do not lose the essence of the present invention.

[0061] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process and related instructions of the system described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0062] It should be noted that the system provided in the above embodiment is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be decomposed or combined. For example, the modules in the above embodiments can be combined into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the modules or steps, and are not regarded as improper limitations of the present invention.

[0063] Those skilled in the art should be able to appreciate that the modules and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two, and the programs corresponding to the software modules and method steps can be placed in random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the technical field. In order to clearly illustrate the interchangeability of electronic hardware and software, the composition and steps of each example have been generally described in the above description according to the function. Whether these functions are performed in electronic 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 to be beyond the scope of the present invention.

[0064] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus / device.

[0065] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. An integrated circuit system applied to a submarine cable, characterized in that: include: FPGA control module, JHS integrated circuit, communication interface module, multi-channel circuit, alarm module, circuit breaker and cable interface; the transmission end of the FPGA control module is respectively connected to the JHS integrated circuit, the communication interface module and the transmission end of the multi-channel circuit; the output end of the FPGA control module is connected to the input end of the alarm module, and the circuit breaker is arranged between the wind turbines connected to the integrated circuit of the submarine cable; wherein, The JHS integrated circuit is provided with a temperature sensor, which is used to detect the temperature data of the JHS integrated circuit in real time, and send the temperature data to the wireless temperature measurement receiving end through wireless radio frequency, and the wireless temperature measurement receiving end is provided with an RS485 port; The wireless temperature measurement receiving end is used to receive the temperature data and send the temperature data to the industrial control computer, and the industrial control computer is used to determine whether the temperature data is abnormal. When the temperature data is abnormal and causes a short circuit fault of the fan, the circuit breaker is controlled to be disconnected, and the alarm module is controlled to alarm; The industrial computer is also used to establish an equivalent model of the electrical system of each of the wind turbines and an equivalent model of the generator, and perform short-circuit calculations based on the established equivalent model of the electrical system of the wind turbine and the equivalent model of the generator; The temperature sensor is also used to obtain the fault temperature range of the fan when it has a short circuit fault; The industrial computer is also used to calculate the tolerance time of the fan to the fault temperature when a short circuit fault occurs, and control the circuit breaker to disconnect to cut off the circuit within the tolerance time; The industrial computer is set with a preset fault temperature matrix T0 and a preset tolerance time matrix A. For the preset tolerance time matrix A, A(A1, A2, A3, A4) is set, wherein A1 is the first preset tolerance time, A2 is the second preset tolerance time, A3 is the third preset tolerance time, A4 is the fourth preset tolerance time, and A1<A2<A3<A4; For the preset fault temperature matrix T0, set T0(T01, T02, T03, T04), where T01 is the first preset fault temperature, T02 is the second preset fault temperature, T03 is the third preset fault temperature, T04 is the fourth preset fault temperature, and 20°C<T01<T02<T03<T04<60°C; The industrial computer is also used to select a corresponding tolerance time as the tolerance time of the fan to the fault temperature in the case of a short circuit fault calculated by the industrial computer according to the relationship between the fault temperature t of the fan obtained by the temperature sensor and the preset fault temperature matrix T0; When t<T01, the fourth preset tolerance time A4 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer; When T01≤t<T02, the third preset tolerance time A3 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer; When T02≤t<T03, the second preset tolerance time A2 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer; When T03≤t<T04, the first preset tolerance time A1 is selected as the tolerance time of the fan to the fault temperature in the event of a short circuit fault calculated by the industrial control computer; The industrial computer is also used to calculate the fault temperature of the equivalent model of the electrical system and the equivalent model of the generator during short circuit, and calculate the fault temperature during short circuit through the rotation speed of the generator and different values ​​of the crowbar resistance in the equivalent model of the generator, so as to obtain the fault temperature range of the fan during short circuit fault.

2. The integrated circuit system for submarine cables according to claim 1, characterized in that: The temperature sensor is attached to the JHS integrated circuit, and there are several temperature sensors; The industrial computer is installed with a kepserver program. The industrial computer is also used to read the temperature value of the contacts of the circuit breaker through the OPC protocol, and to create a new data channel in the industrial computer to display the temperature value of the contacts of the circuit breaker on the industrial computer. When the temperature value reaches a preset warning threshold, the alarm module is controlled to sound an alarm in the form of a voice alarm.

3. The integrated circuit system applied to a submarine cable according to claim 1, characterized in that: The interface of the communication interface module is an RS-232 interface.

4. The integrated circuit system applied to a submarine cable according to claim 1, characterized in that: The industrial computer is also used to control the circuit breaker to disconnect when the temperature data is abnormal and causes a short-circuit fault in the fan, so that the fans other than the fan with the short-circuit fault can resume power generation after a short-term power outage.

5. The integrated circuit system applied to a submarine cable according to claim 2, characterized in that: The industrial control computer is also used to obtain the temperature change trend of the contacts of the circuit breaker and the historical temperature change trend.

6. The integrated circuit system for submarine cables according to claim 1, characterized in that: The alarm module is in the form of a voice alarm. The alarm module adopts an ISD4002 chip and an SPI serial communication protocol. The alarm module stores pre-recorded alarm voices.

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