Reactor turbine bypass discharge control method and apparatus

Abstract

The application relates to a reactor turbine bypass discharge control method and device. The method comprises the following steps: obtaining operation data of a turbine, generating an opening degree signal according to the operation data; the opening degree signal is used for representing a bypass discharge demand of the turbine; judging an interlocking condition of a bypass discharge system valve of the turbine according to a preset interlocking judgment condition, determining an opening condition of the bypass discharge system valve of the turbine; the opening condition is used for representing whether the bypass discharge system valve of the turbine is allowed to be opened; determining a discharge strategy of the turbine according to the opening condition and whether a bypass discharge system function of the turbine is normal; the discharge strategy comprises controlling the bypass discharge system valve to be opened for steam discharge according to the opening degree signal, or triggering a shutdown protection action. The method can improve the operation stability and safety of a nuclear power unit.

Description

Technical Field

[0001] This application relates to the field of nuclear power plant instrumentation and control system technology, and in particular to a method and apparatus for controlling turbine bypass emissions from a reactor. Background Technology

[0002] With the development of modular small modular reactor (SMR) technology, multiple steam turbines are now operating in parallel in unit configurations. In this configuration, one reactor simultaneously supplies steam to multiple steam turbines, each with its own condenser and bypass exhaust system.

[0003] In traditional technology, turbine bypass discharge systems typically employ an independent unit-based control method. When the turbine needs to discharge steam, the bypass discharge system directly discharges excess steam into the corresponding condenser on its side.

[0004] However, when multiple steam turbines are running in parallel, if one of the steam turbines trips and its corresponding condenser becomes unavailable, traditional technology can trigger the opening of the bypass discharge valve. However, since the condenser is unavailable, the discharged steam cannot be discharged into the corresponding condenser. The only way to ensure safety is to trigger a reactor shutdown, which makes it difficult to provide an effective steam discharge path control strategy. Summary of the Invention

[0005] Therefore, it is necessary to provide a turbine bypass emission control method and device for reactors to address the above-mentioned technical problems, which can improve unit availability and economy.

[0006] In a first aspect, this application provides a method for controlling turbine bypass emissions from a reactor, comprising:

[0007] The turbine's operating data is acquired, and an opening signal is generated based on the operating data; the opening signal is used to characterize the turbine's bypass discharge requirements.

[0008] The interlock status of the bypass discharge system valves of the steam turbine is judged according to the preset interlock judgment conditions to determine the opening status of the bypass discharge system valves of the steam turbine; the opening status is used to characterize whether the bypass discharge system valves of the steam turbine are allowed to be opened.

[0009] The turbine's emission strategy is determined based on the opening status and whether the turbine's bypass emission system is functioning properly. The emission strategy includes controlling the bypass emission system valves to open for steam emission based on the opening signal, or triggering a shutdown protection action.

[0010] In one embodiment, the preset interlock determination conditions include at least one of the following: turbine operating status determination conditions, condenser operating status determination conditions, and bypass discharge system lockout determination conditions.

[0011] The conditions for determining the operating status of the steam turbine include determining whether it is permissible to open the bypass discharge system valves based on the operating status of the steam turbine. The operating status includes the load change rate and the steam turbine trip signal. The bypass discharge system valves include the first group of regulating valves and the second group of regulating valves.

[0012] The criteria for determining the condenser's operating status include determining whether it is permissible to open the bypass discharge system valves based on the nuclear power value and the condenser's availability.

[0013] The bypass discharge system lockout determination criteria include determining whether to lock the corresponding bypass discharge system valve based on the lockout signal, wherein the lockout signal includes a condenser fault or unavailable signal.

[0014] In one embodiment, the preset interlocking determination conditions include turbine operating status determination conditions. Based on these preset interlocking determination conditions, the interlocking status of the turbine's bypass discharge system valves is determined to ascertain the opening status of the turbine's bypass discharge system valves, including:

[0015] Obtain the load data of the steam turbine and calculate the load change rate based on the load data;

[0016] If the load change rate exceeds the first threshold, it is determined that the first group of regulating valves is allowed to open;

[0017] If the load change rate exceeds the second threshold and the load data is lower than the third threshold, it is determined that the second set of regulating valves can be opened; wherein the second threshold is greater than the first threshold.

[0018] In one embodiment, the preset interlocking determination conditions include turbine operating status determination conditions. The interlocking status of the turbine's bypass discharge system valves is determined based on these preset interlocking determination conditions to ascertain the opening status of the turbine's bypass discharge system valves. The method further includes:

[0019] Obtain the nuclear power value;

[0020] In the event of a turbine trip, if the nuclear power value is lower than the first preset value, the first set of regulating valves is allowed to open.

[0021] In the event of a turbine trip, if the nuclear power value is higher than the first preset value, then it is determined that the first set of regulating valves and the second set of regulating valves are allowed to open.

[0022] In one embodiment, the preset interlock determination conditions include condenser operating status determination conditions. Based on these preset interlock determination conditions, the interlock status of the turbine bypass discharge system valves is determined to ascertain the opening status of the turbine bypass discharge system valves, including:

[0023] Obtain the availability status of each condenser;

[0024] If the first condenser is unavailable, the second condenser is available, the nuclear power value is lower than the first preset value, and the first set of regulating valves of the first condenser is allowed to open, then it is determined that the first set of regulating valves corresponding to the second condenser is allowed to open.

[0025] In one embodiment, the preset interlocking determination conditions include bypass discharge system lockout determination conditions. The interlocking status of the turbine bypass discharge system valves is determined based on these preset interlocking determination conditions to ascertain the turbine bypass discharge system valve opening status, including:

[0026] If a condenser malfunction or unavailability signal is detected, determine to lock the bypass discharge system valve on the side corresponding to the condenser malfunction or unavailability.

[0027] In one embodiment, the turbine's emission strategy is determined based on the turbine's activation status and whether the turbine's bypass emission system is functioning properly, including:

[0028] When the bypass discharge system valves are allowed to open and the bypass discharge system functions normally and is available, the discharge strategy is determined to be to control the bypass discharge system valves to open and discharge steam according to the opening signal;

[0029] If the reactor cannot maintain its ideal operating condition after steam venting, the venting strategy is determined to trigger a shutdown protection action.

[0030] In one embodiment, determining the turbine's emission strategy based on the turbine's activation status and the normal functioning of its bypass emission system further includes:

[0031] Determine the remaining available capacity of the bypass discharge system when the bypass discharge system valve is allowed to open but the bypass discharge system function is not working properly;

[0032] If the remaining available capacity meets the turbine's emission requirements, the emission strategy is determined to be to control the valves of the bypass emission system with remaining available capacity to release steam based on the opening signal; if the reactor cannot maintain its ideal operating state after steam emission, the emission strategy is determined to trigger a reactor shutdown protection action.

[0033] If the remaining available capacity is insufficient to meet the turbine's emission requirements, the emission strategy is determined to be to trigger a reactor shutdown protection action.

[0034] In one embodiment, the method further includes:

[0035] If the hardware failure level reaches the preset failure condition, the emission strategy is determined to trigger a reactor shutdown protection action.

[0036] Secondly, this application also provides a turbine bypass emission control device for a reactor, comprising:

[0037] The turbine opening signal generation module is used to acquire turbine operating data and generate an opening signal based on the operating data; the opening signal is used to characterize the turbine's bypass discharge requirements.

[0038] The opening status determination module is used to determine the interlock status of the bypass discharge system valves of the steam turbine according to preset interlock judgment conditions, and to determine the opening status of the bypass discharge system valves of the steam turbine; the opening status is used to characterize whether the bypass discharge system valves of the steam turbine are allowed to be opened;

[0039] The emission strategy determination module is used to determine the emission strategy of the steam turbine based on the opening status and whether the bypass emission system of the steam turbine is functioning normally. The emission strategy includes controlling the valves of the bypass emission system to open for steam emission based on the opening signal, or triggering the shutdown protection action.

[0040] The aforementioned turbine bypass emission control method and device for reactors acquires turbine operating data, generates opening signals based on the operating data, and judges the interlock status of the turbine bypass emission system valves according to preset interlock judgment conditions to determine the opening status of the turbine bypass emission system valves. Based on the opening status and whether the turbine bypass emission system is functioning normally, the emission strategy of the turbine is determined. This achieves accurate identification of emission requirements and verification of the rationality of valve opening, enabling the turbine bypass emission control system to adopt appropriate control methods under different operating conditions. It avoids malfunctions and improper opening of bypass emission system valves, reduces unnecessary reactor shutdown protection actions, and ensures the operational stability and safety of the nuclear power unit under various operating conditions. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is an application environment diagram of the turbine bypass emission control method for a reactor in one embodiment;

[0043] Figure 2 This is a schematic diagram of a configuration where multiple steam turbines operate in parallel in one embodiment.

[0044] Figure 3 This is a schematic flowchart of a turbine bypass emission control method in one embodiment;

[0045] Figure 4 This is a flowchart illustrating the process of determining the valve opening status of a bypass discharge system in one embodiment;

[0046] Figure 5 This is a flowchart illustrating the process of determining the opening status of the bypass discharge system valves in another embodiment;

[0047] Figure 6 This is a flowchart illustrating the process of determining the opening status of the bypass discharge system valves in another embodiment;

[0048] Figure 7 This is a schematic diagram of the valve interlocking logic of the bypass discharge system in one embodiment;

[0049] Figure 8 This is a flowchart illustrating the process of determining the emission strategy of a steam turbine in one embodiment;

[0050] Figure 9 This is a flowchart illustrating the process of determining the emission strategy of a steam turbine in another embodiment;

[0051] Figure 10 This is a schematic diagram illustrating the logic for determining whether a complete or partial functional failure leads to a system shutdown in one embodiment.

[0052] Figure 11 This is a schematic flowchart of a turbine bypass emission control method in one embodiment;

[0053] Figure 12 This is a structural block diagram of the turbine bypass emission control device for a reactor in one embodiment;

[0054] Figure 13 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0056] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. The term "and / or" used in this application refers to one of the embodiments, or any combination of multiple embodiments.

[0057] The reactor turbine bypass emission control method provided in this application embodiment can be applied to, for example... Figure 1 The application environment is shown. The steam turbine equipment 102 consists of various steam turbines operating in parallel within a nuclear power unit. The steam turbine equipment 102 communicates with the computer equipment 104 via a network. The steam turbine equipment 102 sends operational data generated during operation to the computer equipment 104, which then controls the bypass emissions from the steam turbines based on this data.

[0058] The turbine bypass emission control method provided in this application can be used in nuclear power units with multiple turbines operating in parallel. Figure 2 A schematic diagram of this configuration is shown. (For example...) Figure 2 As shown, the steam generated by the two direct-flow steam generators is supplied to turbine 1 and turbine 2 respectively via the main steam pipeline. Each turbine corresponds to its own condenser and turbine bypass discharge system. The turbines are connected by a steam header, forming a multi-unit parallel operation structure.

[0059] In one exemplary embodiment, such as Figure 3 As shown, a method for controlling turbine bypass emissions in a reactor is provided, which is then applied to... Figure 1 Taking a computer device as an example, the explanation includes the following steps:

[0060] S301: Acquire the turbine's operating data and generate an opening signal based on the operating data; the opening signal is used to characterize the turbine's bypass discharge requirements.

[0061] Among them, the turbine's operating data refers to relevant parameters that can reflect the turbine's current output level or steam consumption, while the opening signal refers to the control command signal generated based on the turbine's operating data, used to characterize the turbine's bypass discharge requirements.

[0062] In one implementation, the turbine's operating data may include turbine load data (e.g., secondary loop load), main steam pressure, etc. The load data can be obtained by measuring the turbine's first-stage pressure and converting it using a function generator, characterizing the actual load level of the secondary loop. After acquiring the turbine's operating data, the bypass discharge requirement is determined based on this data, i.e., whether there is excess steam on the turbine side that needs to be discharged, and the amount of steam that needs to be discharged. Based on this bypass discharge requirement, a corresponding opening signal is generated. For example, the opening signal can be expressed as a percentage or relative value, and its magnitude corresponds to the size of the bypass discharge requirement: when there is a large amount of excess steam on the turbine side that needs to be discharged, the opening signal increases accordingly; when there is no excess steam on the turbine side that needs to be discharged, the opening signal decreases accordingly or remains zero.

[0063] S302, the interlock status of the bypass discharge system valve of the steam turbine is judged according to the preset interlock judgment conditions, and the opening status of the bypass discharge system valve of the steam turbine is determined; the opening status is used to characterize whether the bypass discharge system valve of the steam turbine is allowed to be opened.

[0064] Among them, the preset interlocking judgment conditions refer to the set of rules set in advance to determine whether the bypass discharge system valves of the steam turbine have the conditions to be opened.

[0065] As one implementation method, the system acquires relevant signals regarding the current operating conditions of the turbine bypass discharge system (e.g., turbine load signal, turbine trip signal, condenser status signal, nuclear power signal, etc.) and performs a judgment based on preset interlocking conditions based on these signals. For example, the preset interlocking conditions may include multiple dimensions of judgment conditions, which can be logically ORed, meaning each judgment condition is executed independently and in parallel, and the action corresponding to any judgment condition is triggered when it is met. After all judgment conditions are executed, the system determines the final valve opening status based on whether there is a valve opening requirement and whether interlocking has been triggered.

[0066] S303, based on the opening status and whether the bypass discharge system of the turbine is functioning normally, determine the turbine's discharge strategy; the discharge strategy includes controlling the bypass discharge system valves to open for steam discharge based on the opening signal, or triggering a shutdown protection action.

[0067] As one implementation method, the opening status of the bypass discharge system valves is acquired, and the result of determining whether the bypass discharge system function of the steam turbine is normal is obtained. Based on the opening status and the normal function of the bypass discharge system, the turbine's discharge strategy is jointly determined. In one scenario, when the opening status is "allowed to open" and the bypass discharge system function is normal and available, the discharge strategy is determined to be to control the bypass discharge system valves to open for steam discharge based on the opening signal. In another scenario, when the opening status is "allowed to open" but the bypass discharge system function is not normal, the discharge strategy is determined to trigger a reactor shutdown protection action.

[0068] The aforementioned turbine bypass emission control method for reactors acquires turbine operating data, generates opening signals based on this data, and judges the interlock status of the turbine bypass emission system valves according to preset interlock judgment conditions. This determines the valve opening status and, based on the opening status and the normal functioning of the turbine bypass emission system, determines the turbine's emission strategy. This method accurately identifies emission requirements and verifies the rationality of valve opening, enabling the turbine bypass emission control system to adopt appropriate control methods under different operating conditions. It avoids malfunctions and improper opening of bypass emission system valves, reduces unnecessary reactor shutdown protection actions, and ensures the operational stability and safety of the nuclear power unit under various operating conditions.

[0069] In an exemplary embodiment, the aforementioned preset interlock determination conditions include at least one of the following: turbine operating status determination conditions, condenser operating status determination conditions, and bypass emission system lockout determination conditions:

[0070] 1) The conditions for determining the operating status of the steam turbine include determining whether it is permissible to open the bypass discharge system valves based on the operating status of the steam turbine. The operating status includes the load change rate and the steam turbine trip signal. The bypass discharge system valves include the first group of regulating valves and the second group of regulating valves.

[0071] Among them, the load change rate refers to the rate of change of turbine load per unit time, and is used to characterize the drastic degree of turbine load change.

[0072] For example, the turbine load change rate or turbine trip signal is acquired, and based on the acquired operating status, it is determined whether to allow the bypass discharge system valves to be opened, and which set of regulating valves is allowed to be opened. As one implementation, the turbine load change rate is acquired, and based on the load change rate, it is determined whether to allow the opening of the first set of regulating valves, the second set of regulating valves, or both sets of regulating valves to be opened simultaneously. As another implementation, when a turbine trip signal is detected, it is determined based on the nuclear power level whether to allow the opening of the first set of regulating valves or to allow the opening of both the first and second sets of regulating valves simultaneously.

[0073] It should be noted that a steam turbine, a condenser, and a bypass discharge system are arranged in a row, and the bypass discharge system valves in each row include a first group of regulating valves and a second group of regulating valves.

[0074] 2) The conditions for determining the operating status of the condenser include determining whether it is permissible to open the bypass discharge system valve based on the nuclear power value and the availability of the condenser.

[0075] The nuclear power value is the real-time power value of the reactor, used to characterize the reactor's current power status. The condenser availability status refers to whether the condenser can normally receive and cool the steam emitted from the bypass venting system.

[0076] For example, the decision to allow the bypass discharge system valve to be opened is determined based on the acquired nuclear power value and the availability status of each condenser. As one implementation, when a condenser is available, the bypass discharge system valve corresponding to that condenser is allowed to be opened. As another implementation, when a condenser is unavailable, the decision to allow the bypass discharge system valve to be opened is determined based on the condenser's unavailability, the nuclear power value, and the turbine status, where the turbine status may include the secondary loop load change rate.

[0077] 3) The bypass discharge system lockout determination criteria include determining whether to lock the corresponding bypass discharge system valve based on the lockout signal, wherein the lockout signal includes a condenser fault or unavailable signal.

[0078] The interlock signal includes a status signal indicating that the condenser is faulty or unavailable. An interlock signal is generated when the condenser malfunctions or becomes unavailable. The corresponding side refers to the side where the interlock signal is generated, i.e., the side where the faulty or unavailable condenser is located. Interlocking is a safety protection action that prevents the opening of the bypass discharge system valve on the corresponding side through the interlock signal. This is used to prevent steam from being discharged to the faulty or unavailable condenser, avoiding equipment damage or safety accidents.

[0079] In one implementation, when a lockout signal is detected, the bypass discharge system valve on the corresponding side is locked based on the lockout signal, thus prohibiting the opening of the bypass discharge system valve on that side. In another implementation, when no lockout signal is detected (i.e., the condenser is normally usable), lockout is not triggered, and the bypass discharge system valve can still respond to the opening signal to discharge steam.

[0080] In this embodiment, a preset interlocking judgment condition is formed by the turbine operating status judgment condition, the condenser operating status judgment condition, and the bypass emission system interlocking judgment condition. The system determines whether the bypass emission system valve can be opened based on the turbine operating status, the nuclear power value, the turbine operating status, and the condenser availability status, and determines whether the bypass emission system valve can be opened based on the interlocking signal. This enables the turbine bypass emission control system to accurately identify emission requirements, rationally allocate valves, and effectively isolate faulty equipment, avoiding valve malfunctions and improper opening. It also prevents equipment damage caused by steam emission to an unusable condenser, thus improving the safety and reliability of the turbine bypass emission control.

[0081] In one exemplary embodiment, such as Figure 4As shown, the aforementioned preset interlocking determination conditions include turbine operating status determination conditions. The aforementioned S302, "determining the interlocking status of the turbine's bypass discharge system valves according to the preset interlocking determination conditions, and determining the opening status of the turbine's bypass discharge system valves," may include:

[0082] S401: Obtain the turbine load data and calculate the load change rate based on the load data.

[0083] S402, if the load change rate exceeds the first threshold, determine that the first group of regulating valves is allowed to open.

[0084] S403, if the load change rate exceeds the second threshold and the load data is lower than the third threshold, determine that the second set of regulating valves is allowed to open; wherein the second threshold is greater than the first threshold.

[0085] Among them, load data refers to real-time values ​​that can reflect the current output level of the steam turbine or the amount of steam consumed.

[0086] For example, the load data can be secondary loop load data, which can be obtained by measuring the first-stage pressure of the turbine and transforming it through a preset function. The first threshold and the second threshold are pre-set judgment values ​​used to determine whether the load change rate has reached a level requiring the opening of the bypass discharge system valves, where the second threshold is greater than the first threshold. The first threshold can be used as the basis for valve opening judgment under normal load shedding conditions, while the second threshold can be used as the basis for valve opening judgment under more severe load shedding conditions. The third threshold is a pre-set judgment value used to determine whether the turbine load has recovered to a lower level. When the load data is lower than the third threshold, it indicates that the turbine load is still at a lower level and has not yet recovered. Furthermore, the bypass discharge system valves can be divided into a first group of regulating valves and a second group of regulating valves, where the first group of regulating valves can serve as the basic discharge group, and the second group of regulating valves can serve as the incremental discharge group.

[0087] As one implementation method, real-time load data of the steam turbine is acquired, and the current load value is compared with the load value of the previous moment to determine the amount and direction of load change per unit time, thereby obtaining the load change rate. The calculated load change rate is compared with a first threshold. When the load change rate exceeds the first threshold, it indicates that the steam turbine load decrease rate has exceeded the preset safe change rate, and there is excess steam on the steam turbine side due to the decrease in steam consumption capacity. At this time, it is determined that the first set of regulating valves is allowed to open. The load change rate is compared with a second threshold, and the steam turbine load data is also compared with a third threshold. When the load change rate exceeds the second threshold and the load data is lower than the third threshold, it is determined that the second set of regulating valves is allowed to open. It should be noted that since the second threshold is greater than the first threshold, when the load change rate exceeds the second threshold, the load change rate also exceeds the first threshold. At this time, both the first and second sets of regulating valves are in the open state, jointly providing discharge capacity to meet the large amount of steam discharge demand under more severe load shedding conditions.

[0088] In this embodiment, by acquiring turbine load data and calculating the load change rate, the load change rate is compared with a first threshold. If the load change rate exceeds the first threshold, the first set of regulating valves is allowed to open. The load change rate is then compared with a second threshold, and the load data is compared with a third threshold. If the load change rate exceeds the second threshold and the load data is below the third threshold, the second set of regulating valves is allowed to open. By setting the first and second thresholds, this application enables the bypass discharge system valves to open according to the severity of turbine load changes. When the load shedding is minor, the first set of regulating valves opens to avoid excessive discharge; when the load shedding is more severe, the second set of regulating valves opens to meet the large-capacity discharge requirements. Simultaneously, by setting the third threshold, the second set of regulating valves is allowed to open when the turbine load has not recovered, preventing accidental valve opening.

[0089] In one exemplary embodiment, such as Figure 5 As shown, the aforementioned preset interlocking determination conditions include turbine operating status determination conditions. The aforementioned S302, "determining the interlocking status of the turbine's bypass discharge system valves based on the preset interlocking determination conditions, and determining the opening status of the turbine's bypass discharge system valves," may further include:

[0090] S501, obtain the nuclear power value.

[0091] S502, in the event of a turbine trip, if the nuclear power value is lower than the first preset value, the first set of regulating valves is allowed to open.

[0092] S503: In the event of a turbine trip, if the nuclear power value is higher than the first preset value, then the first set of regulating valves and the second set of regulating valves are allowed to open.

[0093] The first preset value is a pre-set nuclear power determination benchmark value.

[0094] For example, the nuclear power value can be collected in real time by the reactor protection system, and 20% of the rated nuclear power can be set as the first preset value. When the turbine trips, the acquired nuclear power value is compared with the first preset value: if the nuclear power value is lower than the first preset value, it indicates that the reactor is currently operating at low power, the steam production is relatively small, and the amount of excess steam that needs to be discharged after the turbine trips is limited. In this case, it is determined that the first set of regulating valves is allowed to open to provide basic steam discharge capacity; if the nuclear power value is higher than the first preset value, it indicates that the reactor is currently operating at high power, the steam production is relatively large, and the amount of excess steam that needs to be discharged after the turbine trips is large. In this case, it is determined that both the first set of regulating valves and the second set of regulating valves are allowed to be open to provide greater discharge flow capacity. In addition, when the turbine trips, besides determining the valve opening strategy based on the nuclear power value, in order to ensure that the load change rate determination can respond quickly, the load data used to calculate the load change rate can be switched to a preset value (such as a set value 1, which is usually 0), so that the calculated load change rate is forced to exceed the first threshold and the second threshold, thereby ensuring that the valve opening determination can be executed in a timely manner.

[0095] In this embodiment, based on the comparison between the nuclear power value and the first preset value, the valve group that can be opened is determined when the turbine trips, so that the discharge capacity after the trip matches the actual power level. This avoids excessive discharge caused by opening the second set of regulating valves when the steam generation is limited, while ensuring sufficient discharge capacity when a large amount of steam needs to be discharged. This enables the turbine bypass discharge control to achieve reasonable allocation of discharge capacity under various transient conditions, thereby improving adaptability to various operating conditions.

[0096] In one exemplary embodiment, such as Figure 6 As shown, the aforementioned preset interlocking determination conditions include condenser operating status determination conditions. The aforementioned S302, "determining the interlocking status of the turbine bypass discharge system valves according to the preset interlocking determination conditions, and determining the opening status of the turbine bypass discharge system valves," may include:

[0097] S601, obtain the availability status of each condenser.

[0098] S602, if the first condenser is unavailable, the second condenser is available, the nuclear power value is lower than the first preset value, and the first set of regulating valves of the first condenser is allowed to open, then it is determined that the first set of regulating valves corresponding to the second condenser is allowed to open.

[0099] The availability status of the condenser refers to whether the condenser can normally receive and cool the steam discharged from the bypass discharge system.

[0100] As one implementation method, the availability status of each condenser is obtained to determine whether each condenser has the ability to normally receive steam. The availability status of the condenser can be comprehensively judged by condenser operating parameters (such as condenser pressure, cooling water flow rate, vacuum degree, etc.). When the condenser pressure exceeds the threshold, the cooling water is interrupted, or the vacuum degree drops to an unacceptable level, the availability status of the condenser is marked as unavailable; conversely, when all operating parameters of the condenser are within the normal operating range, the availability status of the condenser is marked as available. Based on the obtained availability status and core power value of each condenser, the opening status of the bypass discharge system valve is determined: when the availability status of the first-side condenser is unavailable, the availability status of the second-side condenser is available, the core power value is lower than the first preset value, and the first set of regulating valves of the first-side condenser is allowed to open, the valve opening permission signal generated by the first side is determined to act on the first set of regulating valves corresponding to the second-side condenser, that is, the discharge path is switched from the unavailable first-side condenser to the available second-side condenser, so that steam is discharged through the second-side condenser.

[0101] In this embodiment, when the first-side condenser is unavailable, the second-side condenser is available, the nuclear power value is lower than a first preset value, and the first set of regulating valves for the first-side condenser is allowed to open, the first set of regulating valves corresponding to the second-side condenser is also allowed to open. This allows steam to be discharged through the available-side condenser, avoiding the direct triggering of reactor shutdown protection actions due to the unavailability of this-side condenser, thus improving the availability of the nuclear power unit. Simultaneously, by setting the condition that the nuclear power value is lower than the first preset value, cross-side discharge is ensured to be performed under low-power conditions, preventing cross-side discharge from exceeding the receiving capacity of the available-side condenser when the power is too high, thus ensuring the safe operation of the condenser.

[0102] In an exemplary embodiment, the preset interlocking determination condition includes the bypass discharge system lockout determination condition. The above-mentioned S302 "determines the interlocking status of the bypass discharge system valve of the turbine according to the preset interlocking determination condition and determines the opening status of the bypass discharge system valve of the turbine" may include: when a condenser fault or unavailability signal is detected, determining to lock the bypass discharge system valve on the side corresponding to the condenser fault or unavailability.

[0103] For example, a condenser fault or unavailability signal is detected in real time. This signal can come from a condenser operation status monitoring system, which generates a condenser fault or unavailability signal when the condenser pressure exceeds a threshold, the cooling water flow is insufficient, the vacuum level drops to an unacceptable level, or the condenser is manually marked as unavailable. Upon detecting this signal, the bypass venting system valve on the side of the condenser is locked, i.e., the valve on that side is prohibited from opening, preventing steam from being discharged to the faulty or unavailable condenser through the bypass venting system on that side. The locked state remains until the condenser fault is resolved or the unavailability is lifted.

[0104] In this embodiment, the valve on that side can be locked in time when the condenser malfunctions or becomes unusable, effectively preventing steam from being discharged to the condenser that cannot receive it normally, and avoiding damage to the condenser caused by steam being discharged to the malfunctioning condenser.

[0105] To more clearly explain the specific method for determining the valve interlock status of the turbine bypass discharge system. Figure 7 A schematic diagram of the valve interlocking logic for the bypass discharge system is shown. Figure 7 As shown, the interlocking logic can include three dimensions: turbine operating status determination, condenser operating status determination, and bypass emission system interlock determination. Regarding turbine operating status determination, the secondary loop load A, after load change rate calculation, is compared with the first threshold MAXP1 and the second threshold MAXP2, and load recovery is determined through the third threshold MINP3. When the corresponding threshold conditions are met, a C7A signal and / or a C7B signal are generated, which are used to allow the opening of the first and second sets of regulating valves, respectively. When a turbine trip occurs, the load data used to calculate the load change rate is switched from the secondary loop load A to a preset setpoint 1, ensuring that the calculated load change rate exceeds the first and second thresholds, thus ensuring timely valve opening determination. When the turbine trips, if the nuclear power is higher than a setpoint 2, a C7B signal is generated, used to determine whether the second set of regulating valves can be opened based on the reactor power level during the trip. When one condenser is unavailable (e.g., ...), ... Figure 7 When "Condenser B is unavailable" (as shown in the image) and the nuclear power is below a set value of 2, the C7A signal generated on the unavailable side of the condenser is used to unlock the bypass discharge system valve corresponding to the available side condenser (e.g., ...). Figure 7 As shown in column B, C7A), this allows steam to be discharged through the available side condenser, avoiding direct reactor shutdown due to the unavailability of this side condenser. Regarding the bypass discharge system interlock determination, the "signals that other GCTs should be interlocked" screen signals C7A and C7B. When a condenser fault or unavailability signal is detected, signals C7A and C7B are interlocked, and the valves remain closed. After interlock screening, signals C7A and C7B ultimately determine whether the bypass discharge system valves are allowed to open. Furthermore, Figure 7The "valve interlock reset control station" is used to manually reset the C7A and C7B signals after the accident is handled, returning the system to its normal standby state. It should be noted that in the figure, ≥1 represents an OR gate logic, & represents an AND gate logic, and OFF / ON represents a switch state. Through the combination of these logic gates and switches, logical operations and conditional enabling between various decision signals are realized. Furthermore, in this embodiment, setpoint 1 can be 0, and setpoint 2 can be 20% of the rated nuclear power; wherein, setpoint 2 corresponds to the first preset value in this application.

[0106] In one exemplary embodiment, such as Figure 8 As shown, the above-mentioned S303 "determine the turbine's emission strategy based on the turbine's opening status and whether the turbine's bypass emission system is functioning normally" may include:

[0107] S801, when the bypass discharge system valve is allowed to open and the bypass discharge system is functioning normally and is available, the discharge strategy is determined to be to control the bypass discharge system valve to open and discharge steam according to the opening signal.

[0108] For example, whether the bypass discharge system is functioning properly is a comprehensive condition, which may include the health status of the bypass discharge system valves themselves, the availability status of the corresponding condenser, and the fulfillment of interlocking conditions. For instance, normal functionality means that the valves in the bypass discharge system can respond normally to opening signals and complete the steam discharge action as required, and the corresponding condenser has the ability to receive steam normally; malfunction means that any of the above conditions are not met, resulting in the loss of part or all of the discharge capacity of the bypass discharge system.

[0109] As one implementation method, the opening status of the bypass discharge system valves and the determination results of whether the turbine bypass discharge system is functioning normally are obtained. When the opening status is "allowed to open" and the bypass discharge system is functioning normally and available, the discharge strategy is determined to be to control the bypass discharge system valves to open and discharge steam according to the opening signal. Under this strategy, the bypass discharge system valves perform the opening action according to the opening value indicated by the opening signal, discharging excess steam on the turbine side to the condenser through the bypass discharge system, thereby releasing excess steam on the turbine side and maintaining system pressure balance.

[0110] S802, if the reactor cannot maintain its ideal operating condition after steam venting, the venting strategy is determined to trigger a shutdown protection action.

[0111] For example, the ideal operating state refers to the normal, safe and stable operating state that the reactor can maintain after the steam turbine discharges steam. This state can be characterized by whether the key operating parameters of the reactor are within the preset normal operating range.

[0112] As one implementation method, after steam venting, the turbine bypass venting control system continuously monitors the reactor's operating status. If, after steam venting, the reactor's key operating parameters still deviate from the normal operating range and cannot be restored to normal status through continued venting, the venting strategy is determined to trigger a reactor shutdown protection action. This determination is a further decision made after evaluating the venting effect following the completion of the strategy determined in S801, which involves "controlling the bypass venting system valves to open based on the opening signal for steam venting."

[0113] In this embodiment, steam discharge is performed when the bypass discharge system valve is allowed to open and is functioning normally. If the reactor still cannot maintain an ideal working state after discharge, a shutdown protection action is triggered, allowing the system to release excess steam through discharge, avoiding unnecessary shutdown protection actions. If discharge cannot solve the problem, the shutdown protection is triggered in a timely manner to prevent equipment damage, providing a safety net for the system and achieving a balance between availability and safety.

[0114] In one exemplary embodiment, such as Figure 9 As shown, the above-mentioned S303 "determine the turbine's emission strategy based on the opening status and whether the turbine's bypass emission system is functioning normally" may further include:

[0115] S901, when the bypass discharge system valve is allowed to open but the bypass discharge system function is not working properly, determine the remaining available capacity of the bypass discharge system.

[0116] S902, if the remaining available capacity meets the turbine's emission requirements, the emission strategy is determined to be to control the bypass emission system valve with remaining available capacity to discharge steam according to the opening signal; if the reactor cannot maintain its ideal operating state after steam discharge, the emission strategy is determined to trigger a reactor shutdown protection action.

[0117] S903 determines the emission strategy to trigger a reactor shutdown protection action when the remaining available capacity cannot meet the turbine emission requirements.

[0118] For example, the remaining available capacity refers to the actual discharge capacity of the bypass discharge system to perform steam discharge tasks even when the system is not functioning properly. When only some valves are available, the remaining available capacity is the discharge capacity corresponding to the available valves; when all valves are unavailable, the remaining available capacity is zero.

[0119] As one implementation method, when the bypass discharge system valve is allowed to open but the bypass discharge system is not functioning properly, the remaining available capacity of the bypass discharge system is determined. This remaining available capacity is compared with the turbine's discharge requirements. If the remaining available capacity meets the turbine's discharge requirements, the discharge strategy is determined to be to control the bypass discharge system valves with remaining available capacity to discharge steam based on the opening signal, thus using the remaining available valves to perform the discharge task. After discharge, if the reactor still cannot maintain an ideal operating state, the discharge strategy is determined to switch to triggering a reactor shutdown protection action. If the remaining available capacity cannot meet the turbine's discharge requirements, i.e., the remaining discharge capacity of the bypass discharge system is insufficient to safely and effectively discharge excess steam on the turbine side, the discharge strategy is determined to trigger a reactor shutdown protection action. It should be noted that the remaining available capacity not meeting the turbine's discharge requirements includes at least the following situations: the bypass discharge system is completely unavailable (remaining available capacity is zero) and the bypass discharge system is partially available but the remaining available capacity is insufficient to meet the current discharge requirements.

[0120] In addition to the dynamic shutdown determination based on the comparison of remaining available capacity and emission requirements, this application also sets static shutdown determination criteria for certain preset hardware failure conditions. When the degree of hardware failure reaches the preset complete failure or partial failure conditions, shutdown is directly triggered without dynamic capacity assessment. Figure 10 This illustration shows a schematic diagram of the logic for determining whether a complete or partial functional failure leads to a reactor shutdown, as shown in an embodiment of this application. Figure 10 As shown, this judgment logic is based on hardware status signals, including condenser fault signals, condenser availability signals, GCT manual interlock signals, isolation valve status signals, etc., which are combined logically to determine whether the bypass discharge system is in a state of complete or partial functional failure. Figure 10In the specific implementation shown, the criteria for determining complete functional failure are as follows: When the condenser operating conditions deteriorate (e.g., the condenser pressure exceeds the set value that varies with the turbine load, or the cooling water fails upon receiving a bypass discharge system valve opening signal), a condenser fault signal is generated, triggering a turbine trip. Furthermore, when both condensers are in a faulty or unavailable state (i.e., condenser A is faulty or unavailable, and condenser B is faulty or unavailable), and the GCT manual interlock signal is present, it indicates that both condensers have lost their steam receiving capacity and the system has been forcibly locked by the operator, with no available discharge path for the bypass discharge system. At this point, if another turbine trips and the nuclear power exceeds the setpoint 3, the reactor shutdown protection action is triggered. Functional failures can include the following two scenarios: First, when the isolation valve of any bypass discharge system closes, the discharge channel of that system is cut off, and the discharge capacity decreases. If a turbine trips at this time and the nuclear power exceeds the setpoint 2 for a preset time, the reactor shutdown protection action is triggered. Second, when any condenser malfunctions, the corresponding discharge path becomes unavailable. If the nuclear power exceeds the setpoint 2 at this time, the reactor shutdown protection action is triggered. In the diagram, AND gates indicate that multiple conditions must be met simultaneously, and OR gates indicate that any condition being met triggers the corresponding determination. This logical combination achieves automatic shutdown protection under hardware failure conditions. It should be noted that in this embodiment, the setpoint 3 can be 10% of the rated nuclear power, and the setpoint 2 can be 20% of the rated nuclear power; wherein, the setpoint 2 corresponds to the first preset value in this application.

[0121] In this embodiment, by determining the remaining available capacity of the bypass discharge system, steam is discharged using a valve with remaining available capacity when the remaining available capacity meets the discharge requirements. If the ideal state cannot be maintained after discharge, a shutdown protection action is triggered. If the remaining available capacity cannot meet the discharge requirements, a shutdown protection action is directly triggered, reducing unnecessary shutdown protection actions and ensuring that shutdown protection can be triggered in a timely manner when the capacity is insufficient or the discharge effect is not ideal, thus achieving a balance between availability and safety.

[0122] Figure 11 A flowchart illustrating the turbine bypass emission control method for a reactor is shown. The following will combine... Figure 11 The present application provides an explanation of the reactor turbine bypass emission control method. Based on some embodiments of the present application, a reactor turbine bypass emission control method is provided, which may include the following steps:

[0123] S1: Acquire the turbine's operating data and generate an opening signal based on the operating data.

[0124] S2, based on the preset interlock judgment conditions, judge the interlock status of the bypass discharge system valves of the steam turbine, and determine the opening status of the bypass discharge system valves of the steam turbine.

[0125] S21: Obtain the turbine load data and calculate the load change rate based on the load data.

[0126] S22, if the load change rate exceeds the first threshold, determine that the first group of regulating valves is allowed to open.

[0127] S23, if the load change rate exceeds the second threshold and the load data is lower than the third threshold, determine that the second set of regulating valves can be opened.

[0128] S24, obtain the nuclear power value.

[0129] S25, in the event of a turbine trip, determine the control valve group that can be opened based on the comparison result between the nuclear power value and the first preset value.

[0130] S26, obtain the availability status of each condenser, and if the availability status of the condenser meets the cross-side discharge conditions, determine that the first set of regulating valves corresponding to the second-side condenser is allowed to open.

[0131] S27, if a condenser malfunction or unavailability signal is detected, determine to lock the bypass discharge system valve on the corresponding side.

[0132] S3 determines the turbine's emission strategy based on the turbine's opening status and whether the turbine's bypass emission system is functioning properly.

[0133] S31, when the bypass discharge system valve is allowed to open and the bypass discharge system is functioning normally and is available, the discharge strategy is determined to be to control the bypass discharge system valve to open and discharge steam according to the opening signal.

[0134] S32, if the reactor cannot maintain its ideal operating condition after steam venting, the venting strategy is determined to trigger a shutdown protection action.

[0135] S33, when the bypass discharge system valve is allowed to open but the bypass discharge system function is not working properly, determine the remaining available capacity of the bypass discharge system.

[0136] S34, if the remaining available capacity meets the turbine's emission requirements, the emission strategy is determined to be to control the valves of the bypass emission system with remaining available capacity to discharge steam according to the opening signal; if the reactor cannot maintain its ideal operating state after steam discharge, the emission strategy is determined to trigger the reactor shutdown protection action.

[0137] S35 determines the emission strategy to trigger a reactor shutdown protection action when the remaining available capacity cannot meet the turbine emission requirements.

[0138] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps. It is understood that the steps in different embodiments can be freely combined as needed, and all non-contradictory solutions formed by such combinations are within the scope of protection of this application.

[0139] Based on the same inventive concept, this application also provides a turbine bypass emission control device for implementing the above-described reactor turbine bypass emission control method. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of one or more turbine bypass emission control device embodiments provided below can be found in the above-described limitations of the reactor turbine bypass emission control method, and will not be repeated here.

[0140] In one exemplary embodiment, such as Figure 12 As shown, a turbine bypass emission control device for a reactor is provided, comprising: an opening signal generation module, an opening status determination module, and an emission strategy determination module, wherein:

[0141] The opening signal generation module 1201 is used to acquire the operating data of the steam turbine and generate an opening signal based on the operating data; the opening signal is used to characterize the bypass discharge requirement of the steam turbine.

[0142] The opening status determination module 1202 is used to determine the interlock status of the bypass discharge system valve of the steam turbine according to the preset interlock judgment conditions, and to determine the opening status of the bypass discharge system valve of the steam turbine; the opening status is used to characterize whether the bypass discharge system valve of the steam turbine is allowed to be opened.

[0143] The emission strategy determination module 1203 is used to determine the emission strategy of the steam turbine based on the opening status and whether the bypass emission system of the steam turbine is functioning normally. The emission strategy includes controlling the valves of the bypass emission system to open for steam emission based on the opening signal, or triggering the shutdown protection action.

[0144] Based on the above embodiments, the above device further includes: a turbine operating status determination module, a condenser operating status determination module, and a bypass emission system interlock determination module, wherein:

[0145] The turbine operating status determination module is used to determine whether the bypass discharge system valves are allowed to be opened based on the turbine's operating status. The operating status includes the load change rate and the turbine trip signal. The bypass discharge system valves include a first set of regulating valves and a second set of regulating valves.

[0146] The condenser operating status determination module is used to determine whether the bypass discharge system valve can be opened based on the nuclear power value and the condenser's availability.

[0147] The bypass discharge system lockout determination module is used to determine whether to lock the corresponding bypass discharge system valve based on the lockout signal, wherein the lockout signal includes a condenser fault or unavailable signal.

[0148] Based on the above embodiments, the above-mentioned opening status determination module 1202 includes: a calculation unit, a first opening unit, and a second opening unit, wherein:

[0149] The calculation unit is used to acquire the load data of the steam turbine and calculate the load change rate based on the load data.

[0150] The first opening unit is used to determine whether the first group of regulating valves can be opened when the load change rate exceeds a first threshold.

[0151] The second opening unit is used to determine whether the second set of regulating valves can be opened when the load change rate exceeds the second threshold and the load data is lower than the third threshold; wherein the second threshold is greater than the first threshold.

[0152] Based on the above embodiments, the above-mentioned activation status determination module 1202 includes: a power acquisition unit, a third activation unit, and a fourth activation unit, wherein:

[0153] The power acquisition unit is used to acquire the nuclear power value.

[0154] The third opening unit is used to determine whether the first set of regulating valves can be opened if the nuclear power value is lower than the first preset value in the event of a turbine trip.

[0155] The fourth opening unit is used to determine whether to allow the opening of the first group of regulating valves and the second group of regulating valves if the nuclear power value is higher than the first preset value in the event of a turbine trip.

[0156] Based on the above embodiments, the above-mentioned opening status determination module 1202 includes: a status acquisition unit and a fifth opening unit, wherein:

[0157] The status acquisition unit is used to acquire the available status of each condenser.

[0158] The fifth activation unit is used to determine whether to allow the first set of regulating valves corresponding to the second condenser to open when the first condenser is in an unavailable state, the second condenser is available, the nuclear power value is lower than a first preset value, and the first set of regulating valves of the first condenser is allowed to open.

[0159] Based on the above embodiments, the opening status determination module 1202 further includes: a locking unit, wherein:

[0160] The interlocking unit is used to determine and lock the bypass discharge system valve on the side corresponding to the condenser failure or unavailability signal when a condenser failure or unavailability signal is detected.

[0161] Based on the above embodiments, the emission strategy determination module 1203 includes: a normal emission unit and a first shutdown protection unit, wherein:

[0162] The normal discharge unit is used to determine the discharge strategy as steam discharge by controlling the opening of the bypass discharge system valves according to the opening signal, when the bypass discharge system valves are allowed to open and the bypass discharge system is functioning normally.

[0163] The first shutdown protection unit is used to determine the discharge strategy to trigger a shutdown protection action when the reactor cannot maintain an ideal operating state after steam discharge.

[0164] Based on the above embodiments, the emission strategy determination module 1203 further includes: a capacity determination unit, a strategy determination unit, and a second shutdown protection unit, wherein:

[0165] The capacity determination unit is used to determine the remaining available capacity of the bypass discharge system when the bypass discharge system valves are allowed to open but the bypass discharge system function is not working properly.

[0166] The strategy determination unit is used to determine the emission strategy as steam emission by controlling the valves of the bypass emission system with remaining available capacity according to the opening signal when the remaining available capacity meets the turbine emission requirements; and to determine the emission strategy as triggering the reactor shutdown protection action when the reactor cannot maintain the ideal operating state after steam emission.

[0167] The second shutdown protection unit is used to determine the emission strategy to trigger a shutdown protection action when the remaining available capacity cannot meet the turbine emission requirements.

[0168] Based on the above embodiments, the device further includes:

[0169] The failure shutdown module is used to determine that the emission strategy should trigger a shutdown protection action when the hardware failure level reaches a preset failure condition.

[0170] Each module in the aforementioned turbine bypass emission control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the computer device's memory as software, so that the processor can call and execute the corresponding operations of each module.

[0171] In one exemplary embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 13 As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores turbine operating data. The I / O interfaces are used for information exchange between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When executed by the processor, the computer program implements a turbine bypass emission control method for a reactor.

[0172] Those skilled in the art will understand that Figure 13 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0173] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.

[0174] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps in the above method embodiments.

[0175] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0176] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0177] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0178] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0179] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for controlling turbine bypass emissions in a reactor, characterized in that, The method includes: The turbine's operating data is acquired, and an opening signal is generated based on the operating data; the opening signal is used to characterize the turbine's bypass discharge requirement. The interlock status of the bypass discharge system valve of the steam turbine is judged according to the preset interlock judgment conditions to determine the opening status of the bypass discharge system valve of the steam turbine; the opening status is used to characterize whether the bypass discharge system valve of the steam turbine is allowed to be opened; The turbine's emission strategy is determined based on the opening status and whether the turbine's bypass emission system is functioning normally. The emission strategy includes controlling the bypass emission system valves to open for steam emission based on the opening signal, or triggering a reactor shutdown protection action.

2. The method according to claim 1, characterized in that, The preset interlocking determination conditions include at least one of the following: turbine operating status determination conditions, condenser operating status determination conditions, and bypass emission system lockout determination conditions. The turbine operating status determination conditions include determining whether the bypass discharge system valve is allowed to be opened based on the turbine operating status. The operating status includes the load change rate and the turbine trip signal. The bypass discharge system valve includes a first set of regulating valves and a second set of regulating valves. The condenser operating status determination criteria include determining whether the bypass discharge system valve is allowed to be opened based on the nuclear power value and the condenser availability status. The bypass discharge system lockout determination criteria include determining whether to lock the corresponding bypass discharge system valve based on a lockout signal, wherein the lockout signal includes a condenser fault or unavailable signal.

3. The method according to claim 2, characterized in that, The preset interlocking determination conditions include the turbine operating status determination conditions. The step of determining the interlocking status of the turbine's bypass discharge system valves based on the preset interlocking determination conditions, and determining the opening status of the turbine's bypass discharge system valves, includes: Obtain the load data of the steam turbine, and calculate the load change rate based on the load data; If the load change rate exceeds a first threshold, it is determined that the first set of regulating valves is allowed to open; If the load change rate exceeds a second threshold and the load data is lower than a third threshold, it is determined that the second set of regulating valves is allowed to open; wherein the second threshold is greater than the first threshold.

4. The method according to claim 2, characterized in that, The preset interlocking determination conditions include the turbine operating status determination conditions. The step of determining the interlocking status of the turbine bypass discharge system valves based on the preset interlocking determination conditions, and determining the opening status of the turbine bypass discharge system valves, further includes: Obtain the nuclear power value; In the event of a turbine trip, if the nuclear power value is lower than a first preset value, it is determined that the first set of regulating valves is allowed to open. In the event of a turbine trip, if the nuclear power value is higher than the first preset value, then it is determined that the first set of regulating valves and the second set of regulating valves are allowed to open.

5. The method according to claim 2, characterized in that, The preset interlock determination conditions include the condenser operating status determination conditions. The step of determining the interlock status of the turbine bypass discharge system valves based on the preset interlock determination conditions, and determining the opening status of the turbine bypass discharge system valves, includes: Obtain the availability status of each condenser; If the first-side condenser is unavailable, the second-side condenser is available, the nuclear power value is lower than the first preset value, and the first set of regulating valves of the first-side condenser is allowed to open, then it is determined that the first set of regulating valves corresponding to the second-side condenser is allowed to open.

6. The method according to claim 2, characterized in that, The preset interlocking determination conditions include the bypass discharge system lockout determination conditions. The step of determining the interlocking status of the turbine bypass discharge system valves based on the preset interlocking determination conditions, and determining the opening status of the turbine bypass discharge system valves, includes: If a condenser malfunction or unavailability signal is detected, the bypass discharge system valve on the side corresponding to the condenser malfunction or unavailability is locked.

7. The method according to any one of claims 1-6, characterized in that, The step of determining the turbine's emission strategy based on the turbine's activation status and whether the turbine's bypass emission system is functioning properly includes: When the bypass discharge system valve is allowed to open and the bypass discharge system is functioning normally and is available, the discharge strategy is determined to be to control the bypass discharge system valve to open for steam discharge based on the opening signal; If the reactor cannot maintain its ideal operating condition after steam venting, the venting strategy is determined to trigger a reactor shutdown protection action.

8. The method according to any one of claims 1-6, characterized in that, The step of determining the turbine's emission strategy based on the opening status and whether the turbine's bypass emission system is functioning normally also includes: When the bypass discharge system valve is allowed to open but the bypass discharge system is not functioning properly, determine the remaining available capacity of the bypass discharge system; If the remaining available capacity meets the turbine's emission requirements, the emission strategy is determined to be to control the bypass emission system valve with the remaining available capacity to discharge steam according to the opening signal; if the reactor cannot maintain its ideal operating state after steam discharge, the emission strategy is determined to trigger a reactor shutdown protection action. If the remaining available capacity is insufficient to meet the turbine's emission requirements, the emission strategy is determined to trigger a reactor shutdown protection action.

9. The method according to any one of claims 1-6, characterized in that, The method further includes: If the hardware failure level reaches the preset failure condition, the emission strategy is determined to trigger a reactor shutdown protection action.

10. A turbine bypass emission control device for a reactor, characterized in that, The device includes: An opening signal generation module is used to acquire the operating data of the steam turbine and generate an opening signal based on the operating data; the opening signal is used to characterize the bypass discharge requirement of the steam turbine. The opening status determination module is used to determine the interlock status of the bypass discharge system valve of the steam turbine according to preset interlock judgment conditions, and to determine the opening status of the bypass discharge system valve of the steam turbine; the opening status is used to characterize whether the bypass discharge system valve of the steam turbine is allowed to be opened; The emission strategy determination module is used to determine the emission strategy of the steam turbine based on the opening status and whether the bypass emission system of the steam turbine is functioning normally; the emission strategy includes controlling the valve of the bypass emission system to open for steam emission based on the opening signal, or triggering a shutdown protection action.

Images