CN110989460A - Secondary locking signal anti-error method in sequential control operation - Google Patents
Secondary locking signal anti-error method in sequential control operation Download PDFInfo
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- CN110989460A CN110989460A CN201911343063.6A CN201911343063A CN110989460A CN 110989460 A CN110989460 A CN 110989460A CN 201911343063 A CN201911343063 A CN 201911343063A CN 110989460 A CN110989460 A CN 110989460A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
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Abstract
The invention provides a secondary locking signal anti-error method in sequence control operation, which constructs a secondary locking signal library in a sequence control system according to the selection and application rules of a secondary locking signal of a regulation and control system, forms the incidence relation between operation equipment and the secondary locking signal, organizes a retrieval interface of sequence control locking signal service, associates signal states, adds an automatic retrieval and processing mechanism for the secondary locking signal in the sequence control process, and suspends sequence control when a prompt signal appears in the sequence control process; when a locking signal occurs, sequential control is directly interrupted, misoperation of sequential control can be effectively avoided, safety of power production is improved, and a safer and more reliable new defense line is provided for the smart power grid.
Description
Technical Field
The invention relates to the technical field of power sequence control operation, in particular to a secondary locking signal anti-misoperation method in sequence control operation.
Background
In order to improve the safety and efficiency of switching operation and further improve the lean level of switching operation, the national grid develops the construction work of 'one-key sequential control' of the transformer substation. The 'one-key sequential control' of the transformer substation mainly has the following two modes: deploying a sequence control operating system in the dispatching system to realize remote execution of sequence control operation; and upgrading and transforming the comprehensive automation system in the transformer substation to realize sequential control operation of the transformer substation. In order to avoid sequential control misoperation, an anti-misoperation system is used for carrying out anti-misoperation verification on sequential control operation.
The existing anti-misoperation system comprises topology anti-misoperation verification and logic expression anti-misoperation verification, and basically meets the requirement of avoiding manual remote control mode misoperation. But before remote control it also needs to consider whether there is a secondary lock signal. Due to the change of the operation mode of the power grid, the monitoring system may generate warning and accident secondary locking signals, in the traditional manual remote control operation mode, the secondary locking signals are confirmed and reset manually, and then remote control operation is allowed. The sequential control operation is an operation mode that the system automatically and sequentially completes a remote control operation sequence, and when a secondary locking signal is generated, prompt interruption or sequential control termination is required. Therefore, it is necessary to develop a research on a secondary lock signal safety constraint method in the sequence control system, enrich the anti-error system function, and solve the problem that the secondary lock signal is not processed correspondingly in the sequence control process, so that the sequence control operation is more standard and safe.
Disclosure of Invention
The invention aims to provide a secondary locking signal anti-misoperation method in sequence control operation, which aims to solve the problem that secondary locking signals cannot be processed correspondingly in the sequence control process in the prior art, effectively avoid sequence control misoperation and improve the safety of power production.
In order to achieve the technical purpose, the invention provides a secondary locking signal anti-misoperation method in sequential control operation, which comprises the following operations:
constructing a secondary locking signal library, forming an incidence relation between the operating equipment and a secondary locking signal, and organizing a retrieval interface of a sequence control locking signal service;
acquiring and recording the state of the secondary locking signal from the real-time service in a subscription mode;
and forming a locking rule according to the type of the sequence control operation equipment, calling related locking signals through the associated topology, respectively retrieving secondary locking signals in the process of sequence control formal operation rehearsal and formal sequence control, and interrupting sequence control when locking signals occur.
Preferably, the information of the secondary blocking signal includes a signal name, a protection level, a signal type, a name of a station to which the secondary blocking signal belongs, an ID of the station to which the secondary blocking signal belongs, an ID of a voltage class to which the secondary blocking signal belongs, a name of an interval to which the secondary blocking signal belongs, an ID of an interval to which the secondary blocking signal belongs, a state, a service latitude, and a point number.
Preferably, the primary and secondary signals in the power system model are brought into a secondary blocking signal library, the primary signal is subdivided and divided into a core signal and a general signal, the core signal is classified into a blocking signal, and the general signal and the secondary signal are classified into a prompting signal.
Preferably, the core signals include circuit breaker operating mechanism and circuit breaker SF6 abnormal signals, disconnecting link air chamber abnormal signals, bus air chamber abnormal signals, direct current ground loss of a direct current system, and direct current system insulation fault abnormal signals.
Preferably, the association relationship between the operating device and the secondary blocking signal includes association between the plant station and a total station common blocking signal, association between the voltage level and the present voltage level common blocking signal, and association between the operating device and a corresponding interval blocking signal.
Preferably, the retrieval interface comprises all latching signals under the retrieval plant station and latching signals of the retrieval operation equipment;
all blocking signals under the retrieval plant station are specifically as follows: the input is station ID, the output is a locking signal array, all locking signals under the station are obtained through the interface, the accuracy of a locking signal library is checked, and the locking signal library is adjusted in time;
the blocking signal of the retrieval operation device is specifically: the input is operating equipment, the output is a locking signal array, all locking signals of the operating equipment are obtained through the interface, and related service processing is carried out on the locking signals during sequential control.
Preferably, the locking rule comprises:
the switch interval locking rules are adopted, and the polling signals comprise the interval locking signal, the common interval locking signal with the same voltage level and the total station common interval locking signal;
the circuit is locked regularly, and the polling signal is the same as the interval locking signal of the connected switch;
the bus locking rule is that the patrol inspection signals comprise bus locking signals, all interval locking signals physically connected with the bus, common interval locking signals at the same voltage level and total station common interval locking signals;
the main transformer locking rule is that the polling signals comprise switch interval locking signals at each side, main transformer body locking signals, voltage grade public interval locking signals at each side and total station public interval locking signals.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
compared with the prior art, the method has the advantages that a secondary blocking signal library is established in the sequence control system according to the secondary blocking signal selection and application rule of the regulation and control system, the incidence relation between the operation equipment and the secondary blocking signal is formed, the retrieval interface of the sequence control blocking signal service is organized, the signal state is correlated, an automatic retrieval and processing mechanism for the secondary blocking signal is added in the sequence control process, and when a prompt signal appears in the sequence control process, the sequence control is suspended; when a locking signal occurs, sequential control is directly interrupted, misoperation of sequential control can be effectively avoided, safety of power production is improved, and a safer and more reliable new defense line is provided for the smart power grid.
Drawings
FIG. 1 is a logic diagram of a secondary locking signal anti-error method in sequential control operation according to an embodiment of the present invention;
fig. 2 is a schematic diagram of primary connection of a power grid provided in the embodiment of the present invention.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
The following describes in detail a method for preventing error of a secondary locking signal in a sequential control operation according to an embodiment of the present invention with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention discloses a method for preventing error of a secondary locking signal in a sequential control operation, where the method includes the following operations:
constructing a secondary locking signal library, forming an incidence relation between the operating equipment and a secondary locking signal, and organizing a retrieval interface of a sequence control locking signal service;
acquiring and recording the state of the secondary locking signal from the real-time service in a subscription mode;
and forming a locking rule according to the type of the sequence control operation equipment, calling related locking signals through the associated topology, respectively retrieving secondary locking signals in the process of sequence control formal operation rehearsal and formal sequence control, and interrupting sequence control when locking signals occur.
And forming a secondary blocking signal library according to the secondary blocking signal selection and the application rule of the regulation and control system. The secondary signal alarm level in the electric power system model is divided into four levels, namely a first level, a second level, a third level and a fourth level, and the states of the first level and the second level signals are needed during remote control, so that only the first level and the second level signals are brought into a secondary blocking signal library. The primary signal is generally defined as a latch-type signal and the secondary signal as a cue-type signal. In order to avoid the problem of incorrect locking in the sequence control process due to an overlarge range of locking signals, and simultaneously, the processing function of the original service of an EMS system on secondary signals is not influenced, the alarm level of the secondary signals cannot be modified, the types of the secondary signals are subdivided in the sequence control locking signal service according to the action of primary secondary signals, and a circuit breaker operating mechanism, a circuit breaker SF6 abnormal signal, a disconnecting link air chamber abnormal signal, a bus air chamber abnormal signal, a direct current ground loss of a direct current system and a direct current system insulation fault abnormal signal are core signals, for example, a direct current ground loss and a main transformer body pressure mutation alarm are core signals, non-core signals are general signals, the core signals are locking signals, and the general signals are prompting signals.
In order to increase the universality of blocking signals, the service latitude types are added in the secondary blocking signal information, and the service latitude types are divided into monitoring types, non-monitoring types and all three types, so that the method is applicable to various application scenes. For example, the monitoring station and the operation and maintenance station can acquire the required secondary blocking signal by setting the service latitude type according to respective service requirements. The information of the secondary latching signal includes: signal name, protection level, signal type, name of the station to which the terminal belongs, ID of voltage class to which the terminal belongs, name of the interval to which the terminal belongs, ID of the interval to which the terminal belongs, state, service latitude and point number. And completing the secondary blocking signal information when constructing a secondary blocking signal library.
When the secondary blocking signal library is constructed, the association relationship is established, including the association between the plant station and the total station public blocking signal, the association between the voltage level and the voltage level public blocking signal and the association between the operating equipment and the corresponding interval blocking signal, so that the secondary blocking signal corresponding to the operating equipment can be quickly inquired.
And the retrieval interface for organizing the sequential control blocking signal service comprises all blocking signals under the retrieval plant station and the blocking signals of the retrieval operation equipment. All blocking signals under the retrieval plant station are specifically as follows: the input is station ID, the output is a locking signal array, all locking signals under the station can be obtained through the interface, the accuracy of a locking signal library is checked, and the locking signal library is adjusted in time; the latch signal for the retrieval operation device is specifically: the input is operating equipment (station ID, voltage class ID, interval ID, operating equipment ID) and the output is a blocking signal array. All blocking signals of the operation equipment can be obtained through the interface, and relevant service processing is carried out on the blocking signals during sequential control.
The sequence control blocking signal service constructs a secondary blocking signal library and records the state of a secondary signal, and can simultaneously obtain the signal state when the blocking signal is inquired in sequence control, and can directly use the signal state to process the service. And a subscription mode is adopted to obtain a secondary signal state from the real-time service, and the secondary signal state is consistent with the real-time state, so that the accuracy of a locking signal query result is ensured.
Using a secondary locking signal library in sequence control operation, forming a locking rule according to the type of operation equipment, and calling related locking signals through association topology: the switch interval locking rules are adopted, and the polling signals comprise the interval locking signal, the common interval locking signal with the same voltage level and the total station common interval locking signal; the circuit is locked regularly, and the polling signal is the same as the interval locking signal of the connected switch; the bus locking rule is that the patrol inspection signals comprise bus locking signals, all interval locking signals physically connected with the bus, common interval locking signals at the same voltage level and total station common interval locking signals; the main transformer locking rule is that the polling signals comprise switch interval locking signals at each side, main transformer body locking signals, voltage grade public interval locking signals at each side and total station public interval locking signals.
And searching the secondary locking signals when the sequence control formal operation is previewed, analyzing the type of the operation equipment in the sequence control task, polling the locking signals according to the polling range defined in the locking rule, and directly interrupting the sequence control when the locking signals appear.
And searching the secondary locking signal in the sequence control process, analyzing the type of the operating equipment in the sequence control task, polling the secondary locking signal according to the polling range defined in the locking rule, generating a prompt signal, suspending sequence control, manually judging, selecting to continue sequence control or jump out sequence control, and directly interrupting sequence control when a locking signal is generated.
As shown in fig. 2, during the 101-switch sequential operation, the following latching signals need to be checked: the method comprises the steps that 101 switch interval blocking signals, 110kV voltage class public interval blocking signals and total station public interval blocking signals are searched when sequence control formal operation rehearsal is conducted, operation equipment (101 switches) in sequence control tasks are of switch types, blocking signals are patrolled according to a patrolling range defined in blocking rules, and sequence control is directly interrupted when the blocking signals occur. In the sequence control task, the operating equipment (101 switch) is of a switch type, a secondary locking signal is patrolled according to a patrolling range defined in a locking rule, sequence control is suspended when a prompt signal appears, sequence control is selected to continue or jump out after manual judgment, and sequence control is directly interrupted when a locking signal appears.
In the embodiment of the invention, a secondary locking signal library is constructed in a sequence control system according to the selection and application rules of secondary locking signals of a regulation and control system, the incidence relation between operation equipment and the secondary locking signals is formed, a retrieval interface of sequence control locking signal service is organized, the signal state is correlated, a retrieval and processing mechanism for automatically retrieving and processing the secondary locking signals is added in the sequence control process, and when a prompt signal appears in the sequence control process, the sequence control is suspended; when a locking signal occurs, sequential control is directly interrupted, misoperation of sequential control can be effectively avoided, safety of power production is improved, and a safer and more reliable new defense line is provided for the smart power grid.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A secondary locking signal anti-misoperation method in sequential control operation is characterized by comprising the following operations:
constructing a secondary locking signal library, forming an incidence relation between the operating equipment and a secondary locking signal, and organizing a retrieval interface of a sequence control locking signal service;
acquiring and recording the state of the secondary locking signal from the real-time service in a subscription mode;
and forming a locking rule according to the type of the sequence control operation equipment, calling related locking signals through the associated topology, respectively retrieving secondary locking signals in the process of sequence control formal operation rehearsal and formal sequence control, and interrupting sequence control when locking signals occur.
2. The method as claimed in claim 1, wherein the information of the secondary locking signal includes a signal name, a protection level, a signal type, a name of a station to which the secondary locking signal belongs, an ID of the station to which the secondary locking signal belongs, a voltage class ID of the station to which the secondary locking signal belongs, a name of an interval to which the secondary locking signal belongs, an ID of the interval to which the secondary locking signal belongs, a state, a service latitude, and a point number.
3. The method as claimed in claim 1, wherein the first and second signals in the power system model are collected into a secondary locking signal library, the first signal is subdivided into a core signal and a general signal, the core signal is classified as a locking signal, and the general signal and the second signal are classified as a prompting signal.
4. The method as claimed in claim 3, wherein the core signals include SF6 abnormal signals of circuit breaker operating mechanism and circuit breaker, SF6 abnormal signals of disconnecting link air chamber, bus air chamber abnormal signals, dc earth loss of dc system, and dc system insulation fault abnormal signals.
5. The method of claim 1, wherein the relationship between the operation device and the secondary locking signal comprises the relationship between the plant station and the total station common locking signal, the relationship between the voltage level and the voltage level common locking signal, and the relationship between the operation device and the corresponding interval locking signal.
6. The method according to claim 1, wherein the search interface comprises a search interface for all blocking signals under the plant and a search interface for blocking signals of the operating device;
all blocking signals under the retrieval plant station are specifically as follows: the input is station ID, the output is a locking signal array, all locking signals under the station are obtained through the interface, the accuracy of a locking signal library is checked, and the locking signal library is adjusted in time;
the blocking signal of the retrieval operation device is specifically: the input is operating equipment, the output is a locking signal array, all locking signals of the operating equipment are obtained through the interface, and related service processing is carried out on the locking signals during sequential control.
7. The method of claim 1, wherein the locking rule comprises:
the switch interval locking rules are adopted, and the polling signals comprise the interval locking signal, the common interval locking signal with the same voltage level and the total station common interval locking signal;
the circuit is locked regularly, and the polling signal is the same as the interval locking signal of the connected switch;
the bus locking rule is that the patrol inspection signals comprise bus locking signals, all interval locking signals physically connected with the bus, common interval locking signals at the same voltage level and total station common interval locking signals;
the main transformer locking rule is that the polling signals comprise switch interval locking signals at each side, main transformer body locking signals, voltage grade public interval locking signals at each side and total station public interval locking signals.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111600279A (en) * | 2020-06-15 | 2020-08-28 | 广东电网有限责任公司电力调度控制中心 | Power equipment locking method and device |
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