Method for reducing malfunction of water-turbine generator set

Abstract

The invention provides a method for reducing malfunction of a water-turbine generator set, which comprises the following steps of: acquiring a full-closing signal of a guide vane in the water-turbine generator set in real time; after a full-closing signal of the guide vane is received, an instruction of inputting a lock ingot is sent to the water-turbine generator set, so that a servomotor of the water-turbine generator set is locked through inputting of the lock ingot; after the full-closing signal of the guide vane is received, an instruction for opening an air brake is sent to the water-turbine generator set, so that a generator of the water-turbine generator set is braked through opening of the air brake; and after a full-closing signal of the guide vane is received, an instruction for opening the cylinder valve is sent to the water-turbine generator set, so that a water source of the water-turbine generator set is blocked through opening of the cylinder valve. According to the method for reducing the malfunction of the water-turbine generator set, the risk of malfunction of the water-turbine generator set is effectively reduced, and stable and safe operation of the water-turbine generator set is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of water turbine generator set protection, and in particular to a method for reducing malfunction of a water turbine generator set. Background Art

[0002] The misoperation of the hydro-turbine generator set may cause damage to the equipment and abnormal shutdown of the unit, directly affecting the economic benefits of the hydropower plant. At the same time, the misoperation may also pose a threat to the safety of the operators. Among them, during the start-up and shutdown and operation of the hydro-turbine generator set, the control of the relay lock spindle, the wind gate control and the cylinder valve control are particularly important. If each part does not work correctly, it may cause the start-up and shutdown failure of the unit, and even damage to the equipment and casualties. Summary of the invention

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0004] Therefore, the object of the present disclosure is to provide a method for reducing malfunction of a hydro-generator set.

[0005] To achieve the above-mentioned purpose, the first aspect of the present disclosure provides a method for reducing malfunction of a hydro-turbine generator set, comprising: real-time acquisition of a fully closed signal of a guide vane in the hydro-turbine generator set; after receiving the fully closed signal of the guide vane, sending an instruction to engage a lock spindle to the hydro-turbine generator set, so as to lock the relay of the hydro-turbine generator set by engaging the lock spindle; after receiving the fully closed signal of the guide vane, sending an instruction to open a wind gate to the hydro-turbine generator set, so as to brake the generator of the hydro-turbine generator set by opening the wind gate; after receiving the fully closed signal of the guide vane, sending an instruction to open a cylinder valve to the hydro-turbine generator set, so as to block the water source of the hydro-turbine generator set by opening the cylinder valve.

[0006] Optionally, the method also includes: collecting the speed signal of the generator in real time; comparing the speed of the generator with a set threshold; when the speed of the generator is less than the set threshold and a full-close signal of the guide vane is received, sending an instruction to open the wind gate to the hydro-turbine generator set.

[0007] Optionally, the set threshold is 10%.

[0008] Optionally, the method further includes: using a position sensor to collect the fully closed signal of the guide vane in real time, wherein when the guide vane is in the fully closed state, the output end of the position sensor is converted from an off signal to an on signal; after receiving the on signal of the position sensor, sending instructions for engaging the lock spindle, opening the wind gate, and opening the cylinder valve to the hydro-turbine generator set respectively.

[0009] Optionally, the method also includes: connecting the coil of the first relay and the first output end of the position sensor in series in a power supply circuit; connecting the normally open switch of the first relay in series in a manual control circuit for locking the spindle; wherein, when the coil of the first relay is energized, the normally open switch of the first relay is turned on.

[0010] Optionally, the method also includes: connecting the coil of the second relay and the second output end of the position sensor in series in a power supply circuit; connecting the normally open switch of the second relay in series in a manual control circuit for opening the wind damper; wherein, when the coil of the second relay is energized, the normally open switch of the second relay is turned on.

[0011] Optionally, the method also includes: connecting the coil of the third relay and the third output terminal of the position sensor in series in a power supply circuit; connecting the normally open switch of the third relay in series in a manual control circuit for opening the tube valve; wherein, when the coil of the third relay is energized, the normally open switch of the third relay is turned on.

[0012] The second aspect of the present disclosure provides a device for reducing malfunction of a hydro-turbine generator set, comprising: a collection unit, the collection unit is arranged at the fully closed position of the guide vane of the hydro-turbine generator set, and the collection unit is used to collect the fully closed signal of the guide vane; a control unit, the input end of the control unit is connected to the output end of the collection unit, and the output end of the control unit is connected to the input end of the hydro-turbine generator set, and after receiving the fully closed signal of the guide vane, the control unit is used to send an instruction to the hydro-turbine generator set to engage a lock spindle, so as to lock the relay of the hydro-turbine generator set by engaging the lock spindle, and send an instruction to the hydro-turbine generator set to open a wind gate, so as to brake the generator of the hydro-turbine generator set by opening the wind gate, and send an instruction to the hydro-turbine generator set to open a cylinder valve, so as to block the water source of the hydro-turbine generator set by opening the cylinder valve.

[0013] The third aspect of the present disclosure provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for reducing malfunction of a hydro-turbine generator set as provided in the first aspect of the present disclosure is implemented.

[0014] A fourth aspect of the present disclosure provides a computer-readable storage medium having a computer program stored thereon, wherein when the program is executed by a processor, the method for reducing malfunction of a hydro-turbine generator set as provided in the fourth aspect of the present disclosure is implemented.

[0015] The technical solution provided by the present disclosure may have the following beneficial effects:

[0016] By introducing the logic judgment of fully closing the guide vanes before the locking spindle of the hydro-turbine generator set is put into operation, before the wind gate is opened, and before the cylinder valve is opened, the risk of malfunction of the hydro-turbine generator set is effectively reduced, and the stable and safe operation of the hydro-turbine generator set is achieved, thereby ensuring the higher economic benefits of the hydropower plant.

[0017] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 It is a flow chart of a method for reducing malfunction of a hydro-generator set proposed in an embodiment of the present disclosure;

[0020] Figure 2 It is a flow chart of a method for reducing malfunction of a hydro-generator set proposed in an embodiment of the present disclosure;

[0021] Figure 3 It is a flow chart of a method for reducing malfunction of a hydro-generator set proposed in an embodiment of the present disclosure;

[0022] Figure 4 It is a circuit diagram of the arrangement of the first relay in the method for reducing malfunction of a hydro-generator set proposed in one embodiment of the present disclosure;

[0023] Figure 5 It is a circuit diagram of the arrangement of the second relay in the method for reducing malfunction of a hydro-generator set proposed in an embodiment of the present disclosure;

[0024] Figure 6 is a circuit diagram of the arrangement of the third relay in the method for reducing malfunction of a hydro-generator set proposed in an embodiment of the present disclosure;

[0025] As shown in the figure: K1 is the first output end of the position sensor, K2 is the second output end of the position sensor, and K3 is the third output end of the position sensor;

[0026] KA1, the coil of the first relay, KA11, the normally open switch of the first relay;

[0027] KA2, the coil of the second relay, KA22, the normally open switch of the second relay;

[0028] KA3, the coil of the third relay, KA33, the normally open switch of the third relay. DETAILED DESCRIPTION

[0029] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the embodiment of the present disclosure provides a method for reducing malfunction of a hydro-generator set, comprising:

[0031] Real-time acquisition of the fully closed signal of the guide vanes in the hydro-generator set;

[0032] After receiving the full closing signal of the guide vane, a command for putting in the locking spindle is sent to the hydro-turbine generator set, so as to lock the servomotor of the hydro-turbine generator set by putting in the locking spindle;

[0033] After receiving the full-close signal of the guide vane, a command to open the wind gate is sent to the hydro-generator set, so as to brake the generator of the hydro-generator set by opening the wind gate;

[0034] When the full-close signal of the guide vane is received, an instruction to open the cylinder valve is sent to the hydro-turbine generator set, so as to block the water source of the hydro-turbine generator set by opening the cylinder valve.

[0035] It can be understood that, when the fully closed signal of the guide vane is received, an instruction to engage the locking spindle is sent to the hydro-turbine generator set, thereby achieving the correct engagement of the locking spindle, avoiding damage to the relay caused by the locking spindle being engaged when the guide vane is not fully closed, and thus ensuring the safe and stable operation of the hydro-turbine generator set; when the fully closed signal of the guide vane is received, an instruction to open the wind gate is sent to the hydro-turbine generator set, thereby achieving the correct opening of the wind gate, avoiding failure or damage of the wind gate caused by opening when the guide vane is not fully closed, and thus ensuring the safe and stable operation of the hydro-turbine generator set; when the fully closed signal of the guide vane is received, an instruction to open the cylinder valve is sent to the hydro-turbine generator set, thereby achieving the correct opening of the cylinder valve, avoiding failure or damage of the cylinder valve caused by opening when the guide vane is not fully closed, and thus ensuring the safe and stable operation of the hydro-turbine generator set.

[0036] Therefore, by introducing the logical judgment of fully closing the guide vanes before the locking spindle of the hydro-turbine generator set is put into operation, before the wind gate is opened, and before the cylinder valve is opened, the risk of misoperation of the hydro-turbine generator set is effectively reduced, and the stable and safe operation of the hydro-turbine generator set is achieved, thereby ensuring the higher economic benefits of the hydropower plant.

[0037] It should be noted that the guide vanes in the hydro-turbine generator set are used to control the direction and flow of water entering the runner, thereby adjusting the output power of the generator. In practical applications, the detection and control of the guide vane position is crucial to ensure the safe and stable operation of the hydro-turbine generator set, and the use of advanced sensor technology and control strategies can effectively improve the operating efficiency and reliability of the hydro-turbine generator set. Among them, the speed governor changes the output of the turbine by adjusting the guide vane opening to achieve stable control of the grid frequency. The control system of the speed governor usually adopts a single microcomputer system and a parallel PID structure to achieve precise control.

[0038] The lock spindle in the hydro-turbine generator set is an important part of the relay. Its main function is to prevent the unit from rotating suddenly during the maintenance process of the unit to ensure the personal safety of the maintenance staff. The lock spindle is usually composed of a lock spindle beam, a lock spindle cylinder, a solenoid valve and an oil supply and discharge pipeline. The working principle is that when the relay is in the fully closed position, the solenoid valve circuit is switched by manual or remote control signals on site, and the weight of the lock spindle beam is used to realize the input of the lock spindle device; when the lock spindle needs to be withdrawn, the solenoid valve circuit is switched by the control signal, and the working oil pressure is used to act on the piston in the cylinder to lift the lock spindle beam as a whole to realize the withdrawal of the lock spindle.

[0039] It can be seen from this that the lock spindle plays a vital role in the hydro-turbine generator set, and if the lock spindle is put into operation when the guide vane is not fully closed, it will smash the relay piston rod and cause damage to the equipment. Therefore, setting a logical sequence of fully closing the guide vane and putting the lock spindle into operation can achieve the correct investment of the lock spindle and ensure the safe and stable operation of the hydro-turbine generator set.

[0040] The wind gate in the hydro-turbine generator set is also called the brake wind gate. It is an important part of the turbine and is mainly used to control the speed during the start-up and shutdown of the unit to ensure the safe operation of the unit. The wind gate system controls the air inlet or outlet by adjusting the opening and closing of the wind gate, thereby achieving the braking of the turbine rotor. The working principle of the wind gate usually includes automatic operation mode and manual operation mode. In the automatic operation mode, the opening and closing of the wind gate is automatically adjusted by the control system according to the operating status of the unit. For example, during the shutdown process, when the speed of the unit is reduced to a certain proportion of the rated speed, the wind gate will be automatically put into use to quickly reduce the speed and shut down; in the manual operation mode, the operator can control the opening and closing of the wind gate by manually operating the valve.

[0041] It can be seen from this that the wind gate plays a vital role in the hydro-turbine generator set, and if the wind gate is put into operation when the guide vane is not fully closed, it will fail or be damaged, causing the generator speed to drop slowly or unable to drop. Therefore, setting the logical sequence of fully closing the guide vane and opening the wind gate can achieve the correct operation of the wind gate and ensure the safe and stable operation of the hydro-turbine generator set.

[0042] The cylinder valve in the hydro-turbine generator set is also called a cylinder valve or annular valve. It is a cylindrical gate valve installed between the fixed guide vanes and the movable guide vanes of the turbine. The main function of the cylinder valve is to quickly close to shut down the unit when an accident such as runaway or failure of the water guide mechanism occurs. After the guide vanes are closed during normal shutdown, the cylinder valve can also be closed to reduce the cavitation and silt wear of the guide vanes caused by high-speed water flow. At the same time, it saves the time for emptying and filling the water inlet pipe, reduces water loss and start-up and shutdown time. The design of the cylinder valve makes it produce no head loss when fully open, and it has the characteristics of small size, light weight and flexible operation.

[0043] The working principle of the cylinder valve is that when the unit is shut down, the valve body of the cylinder valve falls between the fixed guide vane and the movable guide vane of the seat ring, the upper end presses the sealing strip tightly, and the lower end presses the sealing strip on the seat ring, thereby achieving the effect of cutting off flow and stopping water. When the unit is started, the valve body of the cylinder valve is lifted to the cavity formed by the upper ring of the seat ring and the top cover. The bottom surface of the valve body is flush with the lower end surface of the top cover, and does not interfere with the flow of water. Under normal shutdown conditions, the guide vane is closed first, and then the cylinder valve is closed. In the event of an accident in the unit, the cylinder valve can achieve self-closing of dynamic water. The cylinder valve is usually not used for flow regulation and is only in the fully open or fully closed position.

[0044] It can be seen from this that the cylinder valve plays a vital role in the hydro-turbine generator set, and when the unit is running, the cylinder valve is in the fully open position, and the water flow of the unit is regulated by adjusting the guide vane opening, thereby achieving load adjustment. During normal operation, the cylinder valve can only be opened and closed by static water. When opening the cylinder valve, the guide vane must be in the fully closed position to prevent damage to the equipment. Therefore, setting the logical sequence of fully closing the guide vane and opening the cylinder valve can achieve the correct input of the cylinder valve and ensure the safe and stable operation of the hydro-turbine generator set.

[0045] In some embodiments, the method further comprises:

[0046] Collect the speed signal of the generator in real time;

[0047] comparing the speed of the generator with a set threshold;

[0048] When the speed of the generator is less than the set threshold and the full-close signal of the guide vane is received, a command to open the wind gate is sent to the turbine generator set.

[0049] It can be understood that by collecting the generator speed and comparing the speed with the set threshold, the generator speed information can be obtained, and when the generator speed is less than the set threshold and after receiving the guide vane fully closed signal, an instruction to open the wind gate is sent to the hydro-turbine generator set, thereby achieving the correct opening of the wind gate, avoiding failure or damage of the wind gate due to opening when the guide vane is not fully closed or when the generator speed is too fast, thereby ensuring the safe and stable operation of the hydro-turbine generator set.

[0050] It should be noted that if the wind gate is braked when the generator is rotating at a high speed, the surface temperature of the brake ring of the brake will rise sharply, and thermal deformation and splitting will occur. At the same time, the dust generated by braking will contaminate the generator, affecting the cooling effect of the generator, causing the stator temperature to rise and the insulation level to decrease. Therefore, opening the wind gate when the generator speed is less than the set threshold can ensure the safe and stable operation of the wind gate.

[0051] The specific setting of the threshold value can be set according to actual needs and there is no restriction on this.

[0052] In some embodiments, the threshold is set at 10%.

[0053] It can be understood that when the generator speed is less than 10% of the rated speed and after receiving the full-close signal of the guide vane, an instruction to open the wind gate is sent to the hydro-turbine generator set, thereby achieving the correct opening of the wind gate and ensuring the safe and stable operation of the hydro-turbine generator set.

[0054] In some embodiments, the method further comprises:

[0055] The position sensor is used to collect the full-close signal of the guide vane in real time, wherein when the guide vane is in the fully-closed state, the output end of the position sensor is converted from the off signal to the on signal;

[0056] After receiving the conduction signal from the position sensor, the command to put in the lock spindle, the command to open the wind gate and the command to open the cylinder valve are respectively sent to the hydro-generator set.

[0057] It can be understood that the position sensor is used to collect the full-close signal of the guide vane in real time, and when the conduction signal of the position sensor is received, the instructions for locking the spindle, opening the wind gate and opening the cylinder valve are respectively sent to the hydro-turbine generator set, thereby achieving the correct opening of the lock spindle, wind gate and cylinder valve, effectively reducing the risk of malfunction of the hydro-turbine generator set, and thus ensuring the stable and safe operation of the hydro-turbine generator set.

[0058] It should be noted that the position sensor is a switching sensor, that is, the position sensor only outputs a shutdown signal (off) and a conduction signal (open). When the output end of the position sensor is a conduction signal, it indicates that the guide vane has reached the fully closed position. Therefore, the switch control of the circuit device can be used to realize the linkage between the position sensor and each valve group, thereby introducing the control logic of fully closing the guide vane into the manual control loop of the lock spindle, air brake and cylinder valve.

[0059] The specific type of the position sensor can be set according to actual needs, and there is no limitation on this. For example, the position sensor can be a displacement sensor, a rotary encoder, an inclination sensor, etc.

[0060] In order to improve the reliability of the system, a "three out of two" logical control method can be adopted, that is, three guide vane position sensors are installed, and the actual position of the guide vane is determined by comparing their signals. If the readings of any two sensors are consistent, the system considers that the reading is reliable and judges whether the guide vane is fully closed based on it. This redundant technology can improve the accuracy of guide vane position detection and the reliability of the system. Even if a sensor fails, the system can still work normally.

[0061] like Figure 4 As shown, in some embodiments, the method further includes:

[0062] Connect the coil KA1 of the first relay and the first output terminal K1 of the position sensor in series in the power supply circuit;

[0063] Connect the normally open switch KA11 of the first relay in series in the manual control circuit of the lock spindle input;

[0064] When the coil KA1 of the first relay is energized, the normally open switch KA11 of the first relay is turned on.

[0065] It can be understood that since the coil KA1 of the first relay and the first output terminal K1 of the position sensor are connected in series in the power supply circuit, and the normally open switch KA11 of the first relay is connected in series in the manual control circuit of the lock spindle, when the first output terminal of the position sensor is a conduction signal, the coil KA1 of the first relay is energized, thereby turning on the normally open switch KA11 of the first relay, and then the lock spindle can be manually controlled using the manual control circuit. Therefore, through the setting of the first relay, the full closing of the guide vane is introduced into the manual control logic of the lock spindle, thereby avoiding damage to the relay due to the lock spindle being put into operation when the guide vane is not fully closed, thereby ensuring the safe and stable operation of the hydro-turbine generator set.

[0066] It should be noted that the first relay includes: a linked coil and a normally open switch. When the first output terminal K1 of the position sensor is a conduction signal, the power supply circuit supplies power to the coil, thereby closing and conducting the normally open switch KA11 of the first relay.

[0067] like Figure 5 As shown, in some embodiments, the method further includes:

[0068] Connect the coil KA2 of the second relay and the second output terminal K2 of the position sensor in series in the power supply circuit;

[0069] Connect the normally open switch KA22 of the second relay in series in the manual control circuit for opening the damper;

[0070] When the coil KA2 of the second relay is energized, the normally open switch KA22 of the second relay is turned on.

[0071] It can be understood that since the coil KA2 of the second relay and the second output terminal K2 of the position sensor are connected in series in the power supply circuit, and the normally open switch KA22 of the second relay is connected in series in the manual control circuit for opening the wind gate, when the second output terminal of the position sensor is a conduction signal, the coil KA2 of the second relay is energized, thereby turning on the normally open switch KA22 of the second relay, and thus enabling the opening of the wind gate to be manually controlled using the manual control circuit. Thus, through the setting of the second relay, the full closing of the guide vane is introduced into the manual control logic for opening the wind gate, thereby avoiding failure or damage of the wind gate due to opening when the guide vane is not fully closed, thereby ensuring the safe and stable operation of the hydro-turbine generator set.

[0072] It should be noted that the second relay includes: a linked coil and a normally open switch. When the second output terminal K2 of the position sensor is a conduction signal, the power supply circuit supplies power to the coil, thereby closing and conducting the normally open switch KA22 of the second relay.

[0073] like Figure 6 As shown, in some embodiments, the method further includes:

[0074] Connect the coil KA3 of the third relay and the third output terminal K3 of the position sensor in series in the power supply circuit;

[0075] Connect the normally open switch KA33 of the third relay in series in the manual control circuit for opening the cylinder valve;

[0076] When the coil KA3 of the third relay is energized, the normally open switch KA33 of the third relay is turned on.

[0077] It can be understood that since the coil KA3 of the third relay and the third output terminal K3 of the position sensor are connected in series in the power supply circuit, and the normally open switch KA33 of the third relay is connected in series in the manual control circuit for opening the cylinder valve, when the third output terminal of the position sensor is a conduction signal, the coil KA3 of the third relay is energized, thereby turning on the normally open switch KA33 of the third relay, and thus enabling the opening of the wind gate to be manually controlled using the manual control circuit. Thus, through the setting of the third relay, the full closing of the guide vane is introduced into the manual control logic for opening the wind gate, thereby avoiding failure or damage of the wind gate due to opening when the guide vane is not fully closed, thereby ensuring the safe and stable operation of the hydro-turbine generator set.

[0078] It should be noted that the third relay includes: a linked coil and a normally open switch. When the third output terminal K3 of the position sensor is a conduction signal, the power supply circuit supplies power to the coil, thereby closing and conducting the normally open switch KA33 of the third relay.

[0079] The method of reducing the misoperation of the hydro-generator set of this embodiment can be implemented by using a control system such as a computer monitoring device, for example: automatic input control of the lock spindle, automatic opening control of the wind gate, and automatic opening control of the cylinder valve, etc. At the same time, the control system can also cooperate with an automated mechanical device to implement other actions, such as the arrangement of the first relay, the second relay, the third relay and other devices to implement manual input control of the lock spindle, manual opening control of the wind gate, and manual opening control of the cylinder valve, etc. The specific implementation method is not limited here.

[0080] The disclosed embodiment also proposes a device for reducing malfunction of a hydro-turbine generator set, comprising: a collection unit and a control unit, wherein the collection unit is arranged at the fully closed position of the guide vane of the hydro-turbine generator set, and the collection unit is used to collect the fully closed signal of the guide vane, the input end of the control unit is connected to the output end of the collection unit, and the output end of the control unit is connected to the input end of the hydro-turbine generator set, and after receiving the fully closed signal of the guide vane, the control unit is used to send an instruction to the hydro-turbine generator set to engage the lock spindle, so as to utilize the engagement of the lock spindle to lock the relay of the hydro-turbine generator set, and send an instruction to the hydro-turbine generator set to open the wind gate, so as to utilize the opening of the wind gate to brake the generator of the hydro-turbine generator set, and send an instruction to the hydro-turbine generator set to open the cylinder valve, so as to utilize the opening of the cylinder valve to block the water source of the hydro-turbine generator set.

[0081] It can be understood that, when the fully closed signal of the guide vane is received, an instruction to engage the locking spindle is sent to the hydro-turbine generator set, thereby achieving the correct engagement of the locking spindle, avoiding damage to the relay caused by the locking spindle being engaged when the guide vane is not fully closed, and thus ensuring the safe and stable operation of the hydro-turbine generator set; when the fully closed signal of the guide vane is received, an instruction to open the wind gate is sent to the hydro-turbine generator set, thereby achieving the correct opening of the wind gate, avoiding failure or damage of the wind gate caused by opening when the guide vane is not fully closed, and thus ensuring the safe and stable operation of the hydro-turbine generator set; when the fully closed signal of the guide vane is received, an instruction to open the cylinder valve is sent to the hydro-turbine generator set, thereby achieving the correct opening of the cylinder valve, avoiding failure or damage of the cylinder valve caused by opening when the guide vane is not fully closed, and thus ensuring the safe and stable operation of the hydro-turbine generator set.

[0082] Therefore, by introducing the logical judgment of fully closing the guide vanes before the locking spindle of the hydro-turbine generator set is put into operation, before the wind gate is opened, and before the cylinder valve is opened, the risk of misoperation of the hydro-turbine generator set is effectively reduced, and the stable and safe operation of the hydro-turbine generator set is achieved, thereby ensuring the higher economic benefits of the hydropower plant.

[0083] The embodiment of the present disclosure also proposes an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the method for reducing malfunction of a hydro-turbine generator set as in the embodiment of the present disclosure is implemented.

[0084] The embodiment of the present disclosure further provides a computer-readable storage medium having a computer program stored thereon, and when the program is executed by a processor, a method for reducing malfunction of a hydro-turbine generator set as in the embodiment of the present disclosure is implemented.

[0085] It should be noted that, in the description of the present disclosure, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "plurality" is two or more.

[0086] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0088] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A method for reducing malfunction of a hydro-generator set, characterized in that: include: Real-time acquisition of the fully closed signal of the guide vanes in the hydro-generator set; After receiving the full-close signal of the guide vane, sending a command for inserting a locking spindle to the hydro-generator set, so as to lock the servomotor of the hydro-generator set by inserting the locking spindle; After receiving the full-close signal of the guide vane, sending an instruction to open the wind gate to the hydro-generator set, so as to brake the generator of the hydro-generator set by opening the wind gate; After receiving the full-close signal of the guide vane, an instruction to open the cylinder valve is sent to the hydro-generator set, so as to block the water source of the hydro-generator set by opening the cylinder valve.

2. The method for reducing malfunction of a hydro-generator set according to claim 1, characterized in that: The method further comprises: Collecting the speed signal of the generator in real time; comparing the rotation speed of the generator with a set threshold; When the rotation speed of the generator is less than a set threshold and a full-close signal of the guide vane is received, an instruction to open the wind gate is sent to the hydro-generator set.

3. The method for reducing malfunction of a hydro-generator set according to claim 2, characterized in that: The set threshold is 10%.

4. The method for reducing malfunction of a hydro-generator set according to claim 1, characterized in that: The method further comprises: A position sensor is used to collect the fully closed signal of the guide vane in real time, wherein when the guide vane is in the fully closed state, the output end of the position sensor is converted from a closed signal to a conducting signal; After receiving the conduction signal of the position sensor, the command to put in the lock spindle, the command to open the wind gate and the command to open the cylinder valve are respectively sent to the hydro-generator set.

5. The method for reducing malfunction of a hydro-generator set according to claim 4, characterized in that: The method further comprises: Connecting the coil of the first relay and the first output terminal of the position sensor in series in a power supply circuit; Connecting the normally open switch of the first relay in series with the manual control circuit of the lock spindle input; When the coil of the first relay is energized, the normally open switch of the first relay is turned on.

6. The method for reducing malfunction of a hydro-generator set according to claim 4, characterized in that: The method further comprises: Connecting the coil of the second relay and the second output terminal of the position sensor in series in the power supply circuit; Connect the normally open switch of the second relay in series in the manual control circuit for opening the wind gate; When the coil of the second relay is energized, the normally open switch of the second relay is turned on.

7. The method for reducing malfunction of a hydro-generator set according to claim 4, characterized in that: The method further comprises: Connecting the coil of the third relay and the third output terminal of the position sensor in series in the power supply circuit; Connecting the normally open switch of the third relay in series in the manual control loop for opening the cylinder valve; When the coil of the third relay is energized, the normally open switch of the third relay is turned on.

8. A device for reducing malfunction of a hydro-generator set, characterized in that: include: A collection unit, the collection unit is arranged at the fully closed position of the guide vane of the hydro-generator set, and the collection unit is used to collect the fully closed signal of the guide vane; A control unit, wherein the input end of the control unit is connected to the output end of the acquisition unit, and the output end of the control unit is connected to the input end of the hydro-turbine generator set. After receiving the full-close signal of the guide vane, the control unit is used to send an instruction to the hydro-turbine generator set to engage the lock spindle, so as to lock the relay of the hydro-turbine generator set by engaging the lock spindle, and send an instruction to the hydro-turbine generator set to open the wind gate, so as to brake the generator of the hydro-turbine generator set by opening the wind gate, and send an instruction to the hydro-turbine generator set to open the cylinder valve, so as to block the water source of the hydro-turbine generator set by opening the cylinder valve.

9. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for reducing malfunction of a hydro-generator set as described in any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by the processor, the method for reducing malfunction of a hydro-generator set as described in any one of claims 1 to 7 is implemented.

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