CN111143630A

CN111143630A - Method and device for checking maintenance safety measure execution state of intelligent substation

Info

Publication number: CN111143630A
Application number: CN201911172314.9A
Authority: CN
Inventors: 徐小俊; 骆兆军; 纪陵
Original assignee: Nanjing SAC Automation Co Ltd
Current assignee: Nanjing SAC Automation Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-05-12
Anticipated expiration: 2039-11-26
Also published as: CN111143630B

Abstract

The invention discloses a method and a device for checking maintenance safety measure execution states of an intelligent substation, wherein the method comprises the steps of obtaining states of a primary switch, a disconnecting link and a grounding wire of the intelligent substation, operation state information and soft and hard pressing plate state information of relay protection equipment, and analyzing to obtain an actual primary interval state and an actual secondary equipment state of the relay protection equipment; acquiring safety measure requirements of an actual overhaul working scene of the intelligent substation to obtain a safety measure task; according to the safety measure task, combining a pre-constructed safety measure checking rule expert knowledge base based on the safety measure task and the primary and secondary equipment states, and analyzing to obtain a corresponding standard primary interval state and a standard secondary equipment state; comparing the actual primary interval state with the standard primary interval state, and comparing the actual secondary equipment state with the standard secondary equipment state to obtain a checking result; and outputting the checking result. And checking the execution state of the safety measure task of the intelligent substation is realized.

Description

Method and device for checking maintenance safety measure execution state of intelligent substation

Technical Field

The invention belongs to the technical field of relay protection intelligent operation and detection of a power system, and particularly relates to a method and a device for checking an execution state of an overhaul safety measure of an intelligent substation.

Background

In a traditional transformer substation, the safety measures of a secondary circuit follow the principle of 'due obvious disconnection point', the secondary circuit and a pressing plate of the transformer substation are physical, the obvious physical disconnection point can be formed, and the equipment can be ensured not to be wrongly exported through obvious physical isolation. However, the intelligent substation is different from the traditional substation, the intelligent substation uses optical fibers as media to realize data transmission, the interconnection between devices is changed into an optical fiber communication link, the corresponding secondary circuit and the pressing plate are changed into virtual forms built in a program, the virtual circuit and the soft pressing plate are called, and in the eyes of operation and maintenance personnel, one substation capable of operating and detecting is changed from real to virtual. Therefore, the intelligent station and the conventional station have great difference in operation, maintenance and repair modes, the secondary safety measure formulation and execution have higher technical requirements on operators, safe and effective technical management and control means are lacked, the intelligent station can only depend on the skill level and working experience of the operators, and the potential safety hazards of the maintenance and repair work of the intelligent equipment are not effectively controlled.

In recent years, a plurality of 220kV and above voltage level intelligent substations of a national grid company continuously generate accidents of protection, no movement and refusal movement caused by incorrect and unavailable safety measures in the operation process of operation and detection, and great harm is caused to the safe and stable operation of a power grid.

In order to improve the safe operation level of a power grid, a lot of research work about the management and control of the operation and the inspection safety measures of the intelligent substation is developed domestically, but the operation process of the safety measures is mainly managed and controlled from the aspects of compiling, auditing, executing monitoring and sequential control of electronic safety measure tickets according to the traditional thinking of the safety measure tickets. This mode has the following limitations and disadvantages:

the contents and the sequence of each operation step in the electronic safety measure ticket are solidified, the requirements on secondary safety measures under different operation environments on site cannot be met, the operation and maintenance habits in different regions cannot be adapted, the requirement on the business quality of operation and maintenance personnel is high, and the popularization and the implementation are difficult;

the checking of the safety measure execution state can only be limited by checking and confirming steps in a single safety measure ticket, and the checking of the safety measure relation between the overhaul interval and the associated operation interval cannot be realized; moreover, the checking mode depends on a specific safety measure ticket, and online real-time checking cannot be realized;

the total station safety measure tickets are various in types, complex in establishment and lack of effective control means.

Disclosure of Invention

The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a method and a device for checking the maintenance safety measure execution state of an intelligent substation.

The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:

in a first aspect, a method for checking an execution state of an overhaul safety measure of an intelligent substation is provided, which includes:

acquiring states of a primary switch, a disconnecting link and a grounding wire of the intelligent substation, and operating state information and soft and hard pressing plate state information of relay protection equipment;

analyzing the states of a primary switch, a disconnecting link and a grounding wire of the intelligent substation to obtain an actual primary interval state; analyzing to obtain the actual secondary equipment state of the relay protection equipment according to the running state information of the relay protection equipment and the soft and hard pressing plate state information;

acquiring safety measure requirements of an actual overhaul working scene of the intelligent substation to obtain a safety measure task;

according to the safety measure task, combining a pre-constructed safety measure checking rule expert knowledge base based on the safety measure task and the primary and secondary equipment states, and analyzing to obtain a corresponding standard primary interval state and a standard secondary equipment state;

comparing the actual primary interval state with the standard primary interval state, and comparing the actual secondary equipment state with the standard secondary equipment state to obtain a checking result;

and outputting the checking result.

In some embodiments, the method for checking the state of the intelligent substation overhaul safety measure includes:

the actual primary interval state is consistent with the standard primary interval state, and the actual secondary equipment state is consistent with the standard secondary equipment state, so that the checking is correct;

or, the actual primary interval state is inconsistent with any one of the standard primary interval state and the actual secondary equipment state, and the error is checked.

The method for checking the maintenance safety measure execution state of the intelligent substation outputs a checking result, and comprises the following steps:

responding to the correct checking, and outputting detailed information of the execution state of the safety measure task; the detailed information comprises a safety measure task, primary equipment state information related to the safety measure task, running state information of secondary equipment related to the safety measure task and soft and hard pressing plate state information;

or responding to the checking error, sending an alarm instruction, prompting that the safety measure is abnormal, and identifying the primary interval and the secondary equipment which do not meet the standard state.

In some embodiments, the method for checking the maintenance safety measure execution state of the intelligent substation, which is a method for constructing an expert knowledge base of a safety measure checking rule based on a safety measure task and a primary and secondary equipment state, includes:

s1, analyzing various overhaul work scenes of the intelligent substation, and defining an overhaul safety measure task set of the intelligent substation;

step S2, defining a primary safety measure rule and a secondary safety measure rule of an intelligent substation maintenance safety measure task based on the step S1, and forming a safety measure task rule knowledge base;

step S3, defining a secondary equipment state set of various relay protection and safety equipment of the intelligent substation based on the safety measure task rule knowledge base in the step S2;

and step S4, defining safety measure relation between the safety measure task and the primary interval state and the secondary equipment state based on the steps S2 and S3, and forming a safety measure checking rule expert knowledge base based on the safety measure task and the primary and secondary equipment states.

In some embodiments, the step S1 includes:

the method comprises the following steps of S1.1, analyzing various actual overhaul working scenes of the intelligent substation, wherein the overhaul working range is mainly divided into three main types, namely a line interval, a main transformer interval and a bus interval, and the overhaul working scenes comprise ① line protection overhaul verification under the condition of primary equipment power failure, ② line protection overhaul verification under the condition of no power failure of the primary equipment, ③ line protection treatment defects under the condition of primary equipment power failure, ④ line protection treatment defect defects under the condition of no power failure of the primary equipment, ⑤ line protection shutdown and reclosing, ⑥ line protection resetting under the condition of no power failure of the primary equipment, ⑦ main transformer protection overhaul verification under the condition of primary equipment power failure, ⑧ main transformer protection overhaul verification, ⑨ line protection overhaul verification under the condition of power failure of the primary equipment, and ⑩ bus protection overhaul verification under the condition of the primary equipment power failure of the primary equipment;

s1.2, based on the various actual overhaul working scenes in the step S1.1, extracting and integrating safety measure requirements under various overhaul working scenes according to a standard safety measure database of the intelligent station, merging the scenes with the same safety measure requirements, and defining an overhaul safety measure task set of the intelligent substation; the intelligent substation overhaul safety measure task set comprises a line interval overhaul safety measure task set, a main transformer interval overhaul safety measure task set and a bus interval overhaul safety measure task set; the line interval maintenance safety measure task set comprises { line operation, line regular inspection, line primary one/two protection modification value and line outage }; the main transformer interval overhaul safety measure task set comprises main transformer operation, main transformer constant inspection, main transformer A/B set protection modification value and main transformer shutdown }; the bus interval overhaul safety measure task set comprises { bus running, bus A/B set protection regular inspection, bus A/B set protection set value changing and bus outage }.

In some embodiments, in the step S2, the primary safety measure rule of each safety measure task in the task set refers to the state requirement of the safety measure task associated with a primary interval, and includes four types of operation, hot standby and overhaul, the secondary safety measure rule of each safety measure task in the task set is described based on 6 types of typical secondary safety isolation measures in a standard safety measure database of an intelligent substation, and is respectively ① input device overhaul pressing plates, ② quits a relay protection device function soft pressing plate, ③ quits a device GOOSE receiving/sending soft pressing plate, ④ quit device SV receiving soft pressing plate ⑤ quits an intelligent terminal jump and closing outlet hard pressing plate, ⑥ unplugging communication optical fibers between devices, wherein the communication optical fibers comprise SV optical fibers and GOOSE optical fibers;

the safety measure task rule group comprises a line operation task safety measure rule, a line regular inspection task safety measure rule, a line main protection modification value task safety measure rule, a line shutdown task safety measure rule, a main transformer operation task safety measure rule, a main transformer regular inspection task safety measure rule, a main transformer A set protection modification value task safety measure rule, a main transformer shutdown task safety measure rule, a bus operation task safety measure rule, a bus A set protection modification value task safety measure rule, a bus shutdown task safety measure rule;

and forming an intelligent substation maintenance safety measure task rule base knowledge base based on various safety measure task rules under various interval types.

In some embodiments, in step S3, the various relay protection and safety devices of the intelligent substation include line protection, main transformer protection, bus differential protection, and an intelligent terminal; setting a state set of each type of secondary equipment according to different safety measure state requirements of each type of safety measure task on the secondary equipment; the equipment state set for line protection comprises four states of an input state, a maintenance state, a fixed value changing state and an exit state; the main transformer protection equipment state set comprises an input state, a coordination state, a maintenance state and an exit state; the bus protection equipment state set comprises four states of an input state, a first matching state, a second matching state, a maintenance state and an exit state; the intelligent terminal equipment state set comprises an input state, a maintenance state and an exit state.

Further, in some embodiments, the line protection switching state refers to a state in which the line protection device normally operates, and a GOOSE sending soft pressing plate and a functional soft pressing plate are switched according to a fixed value single requirement, and the line protection switching state exits from the state in which the pressing plates are overhauled; the line protection maintenance state refers to a state when the line protection device quits all GOOSE sending soft pressing plates related to the running equipment and puts the pressing plates into maintenance; the line protection value-changing state refers to a state when the line protection device exits all GOOSE sending soft pressing plates except reclosing, exits all differential protection function soft pressing plates and is put into maintenance; line protection exit state: the line protection device is indicated to quit all GOOSE sending soft pressing plates and functional soft pressing plates, and the state of the line protection device when the line protection device is put into maintenance and repair;

the main transformer protection input state refers to the state when a main transformer protection device normally operates, and a GOOSE sending soft pressing plate, a GOOSE receiving soft pressing plate and a functional soft pressing plate are input according to a fixed value single requirement, and the pressing plates are withdrawn from maintenance; the main transformer protection maintenance state refers to a state when a main transformer protection device normally operates and is matched with a quit failure joint tripping GOOSE receiving soft pressing plate; the main transformer protection coordination state refers to a state when the main transformer protection device quits all GOOSE sending soft pressing plates related to the operation equipment and is put into maintenance of the pressing plates; the main transformer protection quitting state refers to a state when the main transformer protection device quits all the GOOSE sending soft pressing plates, the GOOSE receiving soft pressing plates and the functional soft pressing plates and is put into maintenance;

the bus protection switching-in state refers to a state that the bus protection device normally operates, a GOOSE sending soft pressing plate, a GOOSE receiving soft pressing plate, an interval receiving soft pressing plate and a function soft pressing plate are switched in according to a fixed value single requirement, and the bus protection device is withdrawn from the state when the bus protection device overhauls the pressing plates; the bus protection maintenance state refers to a state when the bus protection device exits all GOOSE sending soft pressing plates related to the operation equipment and is put into maintenance of the pressing plates; the bus protection coordination state refers to a state that when the bus protection device works at intervals of a circuit and a main transformer without power failure, the bus protection coordination exits from a state that a corresponding interval start failure GOOSE receives a soft pressing plate; the bus protection coordination two-state refers to the state that when the bus protection device works in the interval power failure of a circuit and a main transformer, the bus protection coordination quits the state of the corresponding interval startup failure GOOSE receiving soft pressing plate and the interval receiving soft pressing plate; the bus protection exit state refers to a state when the bus protection device exits all the GOOSE transmitting soft pressing plates, the GOOSE receiving soft pressing plates, the interval receiving soft pressing plates and the functional soft pressing plates and is put into maintenance;

the intelligent terminal is in a state that the intelligent terminal normally operates, a hard pressing plate is put into an outlet, and the intelligent terminal is out of the state when the pressing plate is overhauled; the intelligent terminal maintenance state refers to a state that the intelligent terminal normally operates, exits from the outlet hard pressing plate and is put into maintenance; the intelligent terminal quitting state is a state when the intelligent terminal quits the hard pressing plate at the outlet and is put into maintenance.

In some embodiments, in step S4, the safety measure relations between the safety measure tasks and the primary interval states and the secondary device states include safety measure relations between ① line interval safety measure tasks and line interval primary states, secondary line protection, bus protection, and line intelligent terminal states, safety measure relations between ② main transformer interval safety measure tasks and main transformer interval primary states, secondary main transformer protection, bus protection, and main transformer three-side intelligent terminal states, safety measure relations between ③ bus interval safety measure tasks and branch line primary interval states, secondary main transformer protection, bus protection, and branch line intelligent terminal states, and a safety measure rule expert knowledge base based on the safety measure tasks and the primary and secondary device states is formed based on the above safety measure relations.

The safety measure task and the safety measure checking rule expert knowledge base of the primary and secondary equipment states can be divided according to the primary interval type and the safety measure task type; for a line interval, a primary line interval is required to be in an operating state, double-set line protection is required to be in an input state, double-set line intelligent terminals are required to be in an input state, and double-set bus protection is required to be in an operating state in an safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a line operation safety measure task; the safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to the safety measure task of line regular inspection requires that a line is in a cold standby or overhaul state at intervals, double-set protection of the line is in an overhaul state, double-set intelligent terminals of the line are in an overhaul state, and double-set protection of a bus is in a matching two state; the safety measure rule expert knowledge base of the primary and secondary equipment states corresponding to the primary and primary protection and setting value safety measure task of the line requires that the line is in an operating state at an interval, the primary and primary protection of the line is in a setting value state, the primary and secondary protection of the line is in an operating state, the double intelligent terminals of the line are in an operating state, the protection of the bus A sleeve is in a matching state, and the protection of the bus B sleeve is in an operating state; the safety measure rule expert knowledge base of the primary equipment state and the secondary equipment state corresponding to the line outage safety measure task requires that a line is in a maintenance state at an interval, two sets of line protection are in an exit state, two sets of line intelligent terminals are in an exit state, and two sets of bus protection are in a matching state; for a main transformer interval, a main transformer primary interval is required to be in an operating state (at least one side of the safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a main transformer operation safety measure task), double main transformer protection is required to be in an input state, double intelligent terminal sets are required to be in an input state at the operating side, and double bus protection sets are required to be in an input state; the safety measure rule expert knowledge base of a primary and secondary equipment state corresponding to a main transformer safety measure task requires that a main transformer is in a maintenance state (three-side maintenance) at intervals for the first time, double main transformer protection is in the maintenance state, a three-side intelligent terminal is in a double-sleeve maintenance state, and double-sleeve bus protection is in a matching two state; the safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a protection and setting value safety measure task of a main transformer A requires that the main transformer is in an operating state at intervals, the protection of the main transformer A is in an overhaul state, the intelligent terminal on three sides is in an input state in a double-sleeve mode, the protection of a bus A sleeve is in a matching state, and the protection of a bus B sleeve is in an operating state; the safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a main transformer shutdown safety measure task requires that a main transformer is in a maintenance state (three-side maintenance) at an interval, two sets of main transformer protection are in an exit state, two sets of intelligent terminals on three sides exit, and two sets of bus protection are in a matching two state; for a bus interval, a bus primary interval is required to be in an operating state (at least one branch circuit operates), a bus double-protection input and a corresponding branch circuit double-intelligent terminal are required to be in an input state in an safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a bus operation safety measure task; the safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a bus A set protection and safety measure task requires that a bus is in an operating state (at least one branch circuit operates) at an interval, a bus A set protection is in an overhaul state, a bus B set protection is in an input state, a main transformer A set protection is in a matching state, a main transformer B set protection is in an input state, and a corresponding branch circuit double-set intelligent terminal is in an input state; the safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a bus A set protection setting value safety measure task requires that a bus is in an operating state (at least one branch circuit operates) at an interval for one time, a bus A set protection is in an overhaul state, a bus B set protection is in an input state, a main transformer A set protection is in a matching state, a main transformer B set protection is in an input state, and a corresponding branch circuit double-set intelligent terminal is in an input state; the safety measure rule expert knowledge base of the primary equipment state and the secondary equipment state corresponding to the bus outage safety measure task requires that a bus is in a non-operation state (all branches are in a non-operation state) at an interval, a bus double-set protection is in an exit state, a main transformer double-set protection is in an input state, and a corresponding branch double-set intelligent terminal is in an exit state.

In a second aspect, the present invention further provides an apparatus for checking an execution state of an overhaul safety measure of an intelligent substation, including:

an acquisition module to: acquiring states of a primary switch, a disconnecting link and a grounding wire of the intelligent substation, and operating state information and soft and hard pressing plate state information of relay protection equipment; acquiring safety measure requirements of an actual overhaul working scene of the intelligent substation to obtain a safety measure task;

an analysis module to: analyzing the states of a primary switch, a disconnecting link and a grounding wire of the intelligent substation to obtain an actual primary interval state; analyzing to obtain the actual secondary equipment state of the relay protection equipment according to the running state information of the relay protection equipment and the soft and hard pressing plate state information;

a comparison module for: comparing the actual primary interval state with the standard primary interval state, and comparing the actual secondary equipment state with the standard secondary equipment state to obtain a checking result;

and the check result output module is used for: and outputting the checking result.

Has the advantages that: according to the method and the device for checking the maintenance safety measure execution state of the intelligent substation, provided by the invention, the safety measure execution state can be dynamically checked on line based on a safety measure task and a safety measure checking rule expert knowledge base of a primary and secondary equipment state, and checking result information is output. Effective assistance is provided for daily operation and inspection work of the intelligent substation, and a brand-new primary and secondary anti-misoperation system is established. Starting from safety measure requirements of various actual maintenance work tasks of the intelligent substation, a safety measure task set is flexibly defined, and meanwhile, a state set of the secondary equipment is flexibly defined according to the state requirements of the safety measure tasks on the secondary equipment. And then, constructing an expert knowledge base of safety measure checking rules based on the safety measure task and the primary and secondary equipment states. And finally, dynamically detecting and checking whether all safety measures are correctly executed or not based on the knowledge base, providing safety guarantee for the daily operation and maintenance work of the intelligent substation, greatly improving the maintenance work efficiency of the intelligent substation, ensuring the safe operation of a regional power grid and bringing considerable economic and social benefits.

Drawings

Fig. 1 is a flowchart of an intelligent substation overhaul safety measure execution state checking method according to an embodiment.

FIG. 2 is a block diagram of an intelligent substation overhaul safety measure execution state checking device according to an embodiment;

FIG. 3 is a diagram illustrating the trigger condition and operation of the safety measure verification detection state machine according to the first application example;

FIG. 4 is a diagram illustrating the trigger condition and operation of the safety measure checking and detecting state machine according to the second application example;

fig. 5 is a diagram of the trigger condition and the working principle of the safety measure checking and detecting state machine for implementing the third application example.

Detailed Description

The invention is further described below with reference to the figures and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Example 1

A method for checking an execution state of an overhaul safety measure of an intelligent substation comprises the following steps:

and outputting the checking result.

The checking result comprises:

And outputting the checking result, which comprises:

The construction method of the safety measure checking rule expert knowledge base based on the safety measure task and the primary and secondary equipment states comprises the following steps:

In some embodiments, the step S1 specifically includes the following steps:

the method comprises the following steps of S1.1, analyzing various actual maintenance working scenes of the intelligent substation, wherein the maintenance working range is mainly divided into three main types of line intervals, main transformer intervals and bus intervals, and a typical maintenance working scene comprises that under the condition that ① primary equipment is powered off, under the condition that ② primary equipment is not powered off for line protection maintenance verification, under the condition that ③ primary equipment is powered off for line protection maintenance verification, under the condition that ④ primary equipment is powered off for line protection processing, ⑤ primary equipment is powered off for line protection processing and is switched into a reclosing ⑥ for reclosing, under the condition that ⑦ primary equipment is powered off for line protection change value, under the condition that ⑧ primary equipment is powered off for main transformer protection maintenance verification, under the condition that ⑨ primary equipment is powered off for main transformer protection maintenance verification, and under the condition that ⑩ primary equipment is powered off for bus protection maintenance verification.

And S1.2, extracting and integrating safety measure requirements under various overhaul work scenes according to the standard safety measure database of the intelligent station based on various actual overhaul work scenes in the step S1.1, merging the scenes with the same safety measure requirements, and defining an overhaul safety measure task set of the intelligent substation. The intelligent substation overhaul safety measure task set comprises a line interval overhaul safety measure task set, a main transformer interval overhaul safety measure task set and a bus interval overhaul safety measure task set. The line interval maintenance safety measure task set comprises { line operation, line regular inspection, line primary one/two protection modification value and line outage }. The main transformer interval overhaul safety measure task set comprises main transformer operation, main transformer constant inspection, main transformer A/B set protection change value and main transformer shutdown. The bus interval overhaul safety measure task set comprises { bus running, bus A/B set protection regular inspection, bus A/B set protection set value changing and bus outage }.

In some embodiments, the primary safety measure rule of each safety measure task in the task set in step S2 refers to a state requirement of the safety measure task associated with a primary interval, and includes four types of operation, hot standby, and maintenance, the secondary safety measure rule of each safety measure task in the task set is described based on 6 types of typical secondary safety isolation measures in a standard safety measure database of an intelligent substation, and is respectively ① an input device maintenance pressing plate ② exits a relay protection device function soft pressing plate ③ an exit device GOOSE receiving/sending soft pressing plate ④ an exit device SV receiving soft pressing plate ⑤ exits an intelligent terminal jump, and a switching outlet hard pressing plate ⑥ pulls out communication optical fibers between devices, including SV optical fibers and GOOSE optical fibers.

In some embodiments, in the step S3, the various relay protection and safety devices of the intelligent substation include a line protection device, a main transformer protection device, a bus differential protection device, and an intelligent terminal. The equipment state set for line protection comprises four states of an input state, a maintenance state, a fixed value changing state and an exit state; the main transformer protection equipment state set comprises an input state, a coordination state, a maintenance state and an exit state. The bus protection equipment state set comprises four states of an input state, a first matching state, a second matching state, a maintenance state and an exit state; the intelligent terminal equipment state set comprises an input state, a maintenance state and an exit state.

Further, in some embodiments, in step S3, the four device states included in the device state set for line protection are described as follows: the line protection input state refers to the state when the line protection device normally operates, a GOOSE is input according to a fixed value single requirement to send a soft pressing plate and a functional soft pressing plate, and the pressing plate is withdrawn from maintenance; the line protection maintenance state refers to a state when the line protection device quits all GOOSE sending soft pressing plates related to the running equipment and puts the pressing plates into maintenance; the line protection value-changing state refers to a state when the line protection device exits all GOOSE sending soft pressing plates except reclosing, exits all differential protection function soft pressing plates and is put into maintenance; line protection exit state: and (5) the line protection device is withdrawn from the state of sending the soft pressing plates and the functional soft pressing plates by all the GOOSEs and putting the soft pressing plates into maintenance. The four equipment states contained in the equipment state set of the main transformer protection are described as follows: the main transformer protection input state refers to the state when a main transformer protection device normally operates, and a GOOSE sending soft pressing plate, a GOOSE receiving soft pressing plate and a functional soft pressing plate are input according to a fixed value single requirement, and the pressing plates are withdrawn from maintenance; the main transformer protection maintenance state refers to a state when a main transformer protection device normally operates and is matched with a quit failure joint tripping GOOSE receiving soft pressing plate; the main transformer protection coordination state refers to a state when the main transformer protection device quits all GOOSE sending soft pressing plates related to the operation equipment and is put into maintenance of the pressing plates; the main transformer protection quitting state refers to a state when the main transformer protection device quits all GOOSE sending soft pressing plates, all GOOSE receiving soft pressing plates and all functional soft pressing plates and enters the maintenance pressing plates. The four equipment states contained in the equipment state set for bus protection are described as follows: the bus protection switching-in state refers to a state that the bus protection device normally operates, a GOOSE sending soft pressing plate, a GOOSE receiving soft pressing plate, an interval receiving soft pressing plate and a function soft pressing plate are switched in according to a fixed value single requirement, and the bus protection device is withdrawn from the state when the bus protection device overhauls the pressing plates; the bus protection maintenance state refers to a state when the bus protection device exits all GOOSE sending soft pressing plates related to the operation equipment and is put into maintenance of the pressing plates; the bus protection coordination state refers to a state that when the bus protection device works at intervals of a circuit and a main transformer without power failure, the bus protection coordination exits from a state that a corresponding interval start failure GOOSE receives a soft pressing plate; the bus protection coordination two-state refers to the state that when the bus protection device works in the interval power failure of a circuit and a main transformer, the bus protection coordination quits the state of the corresponding interval startup failure GOOSE receiving soft pressing plate and the interval receiving soft pressing plate; the bus protection exit state refers to a state when the bus protection device exits all the GOOSE transmitting soft pressing plates, the GOOSE receiving soft pressing plates, the interval receiving soft pressing plates and the functional soft pressing plates and is put into maintenance of the pressing plates. The intelligent terminal is in a state that the intelligent terminal normally operates, a hard pressing plate is put into an outlet, and the intelligent terminal is out of the state when the pressing plate is overhauled; the intelligent terminal maintenance state refers to a state that the intelligent terminal normally operates, exits from the outlet hard pressing plate and is put into maintenance; the intelligent terminal quitting state is a state when the intelligent terminal quits the hard pressing plate at the outlet and is put into maintenance.

In some embodiments, in the step S4, the safety measure relations between the safety measure tasks and the primary interval states and the secondary equipment states include ① safety measure tasks at line intervals and primary line interval states, secondary line protection, bus protection, safety measure relations between line intelligent terminal states ② safety measure tasks at primary interval intervals and primary main transformer interval states, secondary main transformer protection, bus protection, safety measure relations between three-side main transformer intelligent terminal states ③ safety measure tasks at bus intervals and primary branch interval states, secondary main transformer protection, bus protection, and safety measure relations between branch intelligent terminal states;

in some embodiments, in step S4, the safety measure task and the safety measure checking rule expert knowledge base in the primary and secondary device states may have a knowledge base structure specifically divided according to each primary interval type and each safety measure task type. For a line interval, a primary line interval is required to be in an operating state, double-set line protection is required to be in an input state, double-set line intelligent terminals are required to be in an input state, and double-set bus protection is required to be in an operating state in an safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a line operation safety measure task; the safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to the safety measure task of line regular inspection requires that a line is in a cold standby or overhaul state at intervals, double-set protection of the line is in an overhaul state, double-set intelligent terminals of the line are in an overhaul state, and double-set protection of a bus is in a matching two state; the safety measure rule expert knowledge base of the primary and secondary equipment states corresponding to the primary and primary protection and setting value safety measure task of the line requires that the line is in an operating state at an interval, the primary and primary protection of the line is in a setting value state, the primary and secondary protection of the line is in an operating state, the double intelligent terminals of the line are in an operating state, the protection of the bus A sleeve is in a matching state, and the protection of the bus B sleeve is in an operating state; the safety measure rule expert knowledge base of the primary equipment state and the secondary equipment state corresponding to the line outage safety measure task requires that the line is in a maintenance state at an interval, the double-set protection of the line is in an exit state, the double-set intelligent terminal of the line is in the exit state, and the double-set protection of the bus is in a matching state. For a main transformer interval, a main transformer primary interval is required to be in an operating state (at least one side of the safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a main transformer operation safety measure task), double main transformer protection is required to be in an input state, double intelligent terminal sets are required to be in an input state at the operating side, and double bus protection sets are required to be in an input state; the safety measure rule expert knowledge base of a primary and secondary equipment state corresponding to a main transformer safety measure task requires that a main transformer is in a maintenance state (three-side maintenance) at intervals for the first time, double main transformer protection is in the maintenance state, a three-side intelligent terminal is in a double-sleeve maintenance state, and double-sleeve bus protection is in a matching two state; the safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a protection and setting value safety measure task of a main transformer A requires that the main transformer is in an operating state at intervals, the protection of the main transformer A is in an overhaul state, the intelligent terminal on three sides is in an input state in a double-sleeve mode, the protection of a bus A sleeve is in a matching state, and the protection of a bus B sleeve is in an operating state; the safety measure rule expert knowledge base of the primary and secondary equipment states corresponding to the main transformer shutdown safety measure task requires that the main transformer is in a maintenance state (three-side maintenance) at an interval, two sets of main transformer protection are in an exit state, two sets of intelligent terminals on three sides exit, and two sets of bus protection are in a matching two state. For a bus interval, a bus primary interval is required to be in an operating state (at least one branch circuit operates), a bus double-protection input and a corresponding branch circuit double-intelligent terminal are required to be in an input state in an safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a bus operation safety measure task; the safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a bus A set protection and safety measure task requires that a bus is in an operating state (at least one branch circuit operates) at an interval, a bus A set protection is in an overhaul state, a bus B set protection is in an input state, a main transformer A set protection is in a matching state, a main transformer B set protection is in an input state, and a corresponding branch circuit double-set intelligent terminal is in an input state; the safety measure rule expert knowledge base of a primary equipment state and a secondary equipment state corresponding to a bus A set protection setting value safety measure task requires that a bus is in an operating state (at least one branch circuit operates) at an interval for one time, a bus A set protection is in an overhaul state, a bus B set protection is in an input state, a main transformer A set protection is in a matching state, a main transformer B set protection is in an input state, and a corresponding branch circuit double-set intelligent terminal is in an input state; the safety measure rule expert knowledge base of the primary equipment state and the secondary equipment state corresponding to the bus outage safety measure task requires that a bus is in a non-operation state (all branches are in a non-operation state) at an interval, a bus double-set protection is in an exit state, a main transformer double-set protection is in an input state, and a corresponding branch double-set intelligent terminal is in an exit state.

In some embodiments, the processes of information comparison and measure status dynamic confirmation are specifically contemplated as follows: and an operation module of the safety measure checking and detecting state machine monitors the states of the primary switch, the disconnecting link and the grounding wire of the total station, the running state information of the relay protection equipment and the state information of the soft and hard pressing plates in real time, registers the monitoring information points as corresponding triggering conditions according to a triggering-callback mechanism, and dynamically detects the change of the states of the primary equipment and the secondary equipment. And on the basis of dynamically detecting the change of the primary and secondary equipment states, dynamically checking the execution state of the safety measure task by combining with a safety measure checking rule expert knowledge base based on the safety measure task and the primary and secondary equipment states.

In some embodiments, the output of the checking information of the execution state of the safety measure task of the intelligent substation refers to actively outputting the detailed information of the execution state of the safety measure task after the triggering-type dynamic checking behavior occurs in step S5. The detailed information comprises a safety measure task, primary equipment state information related to the safety measure task, running state information of secondary equipment related to the safety measure task and soft and hard pressing plate state information.

Example 2

As shown in fig. 2, an intelligent substation overhauls safety measure execution state check device includes:

In some practical applications, the intelligent substation overhaul safety measure execution state checking device is in a safety measure checking and detecting state machine mode. The specific application process is explained below in connection with an implementation application example.

Example of implementation of application

An intelligent substation overhaul safety measure execution state checking method based on a safety measure task and a primary and secondary equipment state comprises the following steps:

step S101, various overhaul working scenes of the line interval of the intelligent substation are analyzed, safety measure requirements under various overhaul working scenes are extracted and integrated according to a standard safety measure database of the intelligent substation, and after scenes with the same safety measure requirements are combined, a line overhaul safety measure task set can be defined as { line operation, line verification, line master protection modification value and line outage }.

And S102, analyzing safety measure items required to be executed by the four safety measure tasks in the safety measure task set in the S101 according to the standard safety measure rule base of the intelligent substation to form a line interval safety measure task rule knowledge base.

Table 1 line interval safety measure task rule knowledge base table

And S103, on the basis of the step S102, defining a secondary equipment state set of relay protection and self-safety equipment of a corresponding model according to the corresponding safety measure rule requirements in the table 1. The state set of the line protection equipment is defined as { input, maintenance, value change and exit }, the state set of the bus protection equipment is defined as { input, coordination one state and coordination two state }, the state set of the intelligent terminal equipment is defined as { input, maintenance and exit }, and the identification mechanism of each state in the state set is shown as the following table:

table 2 principle table of state recognition mechanism of line protection device

Table 3 bus protection equipment state identification mechanism principle table

Table 4 intelligent terminal equipment state identification mechanism principle table

And step S104, forming a safety measure checking rule expert knowledge base based on the safety measure task and the primary and secondary equipment states according to the safety measure relation between the safety measure task and the primary interval state and the secondary equipment state on the basis of the step S103. The expert knowledge base of the line spacing can be expressed as the following table.

Table 5 line interval safety measure task and primary and secondary equipment state corresponding checking rule table

And S105, registering the state of the primary equipment at the line interval, the normal running state information of the secondary relay protection and self-installation equipment and the state information of the pressing plate on the basis of the step S103, registering corresponding trigger conditions according to a trigger-callback mechanism, and performing callback processing to update the state of the primary interval, the state of the secondary relay protection and the equipment of the self-installation equipment after the trigger conditions are met. Meanwhile, based on the line interval safety measure tasks in the step S104 and the safety measure checking rule expert knowledge base of the primary and secondary equipment states, a safety measure checking and detecting state machine is established, and the execution states of all the safety measure tasks are checked in real time through expected information comparison and measure state confirmation.

And S106, visually outputting the checking result of the safety measure checking and detecting state machine on the basis of the step S105, wherein the output information comprises the name of each safety measure task, the actual state and the expected state of the primary interval, the real-time state and the expected state of the associated secondary relay protection and safety equipment and the safety measure checking result information.

The safety measure checking and detecting state machine triggering condition and the state machine working principle diagram are shown in figure 2.

Example two of the implementation application

Step S201, analyzing various overhaul working scenes of a main transformer interval of the intelligent substation, extracting and integrating safety measure requirements under various overhaul working scenes according to a standard safety measure database of the intelligent substation, and defining a main transformer overhaul safety measure task set as { main transformer operation, main transformer verification, main transformer A/B set protection modification values and main transformer shutdown } after merging the scenes with the same safety measure requirements.

And S202, analyzing safety measure items required to be executed by the four safety measure tasks in the safety measure task set in the step S201 according to the standard safety measure rule base of the intelligent substation to form a main transformer interval safety measure task rule knowledge base.

Table 6 master transformer interval safety measure task rule knowledge base table

And S203, on the basis of the step S202, defining a secondary equipment state set of relay protection and self-safety equipment of a corresponding model according to the corresponding safety measure rule requirements in the table 1. The method comprises the following steps of defining a main transformer protection equipment state set as { input, maintenance and exit }, defining a bus protection equipment state set as { input, matching one state and matching two state }, and defining an intelligent terminal equipment state set as { input, maintenance and exit }, wherein the identification mechanism of each state in the state set is shown in the following table:

TABLE 7 State control mechanism principle table of main transformer protection equipment

Table 8 bus protection equipment state identification mechanism principle table

Table 9 principle table of state recognition mechanism of intelligent terminal equipment

And S204, forming a safety measure checking rule expert knowledge base based on the safety measure task and the primary and secondary equipment states according to the safety measure relation between the safety measure task and the primary interval state and the secondary equipment state on the basis of the step S203. The expert knowledge base of the primary substation interval can be expressed as the following table.

Table 10 master transformer interval safety measure task and primary and secondary equipment state corresponding checking rule table

And S205, registering the normal running state information and the pressing plate state information of the primary equipment state, the secondary relay protection and the self-installation equipment of the main transformer interval on the basis of the step S203, registering corresponding trigger conditions according to a trigger-callback mechanism, and performing callback processing to update the primary interval state and the equipment state of the secondary relay protection and the self-installation equipment after the trigger conditions are met. Meanwhile, a safety measure checking and detecting state machine is established based on the main transformer interval safety measure tasks and the safety measure checking rule expert knowledge base of the primary and secondary equipment states in the step S204, and the execution states of the safety measure tasks are checked in real time through expected information comparison and measure state confirmation.

And S206, visually outputting the checking result of the safety measure checking and detecting state machine on the basis of the step S205, wherein the output information comprises the name of each safety measure task, the actual state and the expected state of the primary interval, the real-time state and the expected state of the associated secondary relay protection and safety equipment, and the safety measure checking result information.

The safety measure checking and detecting state machine triggering condition and the state machine working principle diagram are shown in figure 3.

Application example three

Step S301, analyzing various overhaul working scenes of bus intervals of the intelligent substation, extracting and integrating safety measure requirements under various overhaul working scenes according to a standard safety measure database of the intelligent substation, combining scenes with the same safety measure requirements, and defining a bus overhaul safety measure task set as { bus running, bus A/B protection fixed detection, bus A/B protection modified value, and bus stop running }.

And S302, analyzing safety measure items required to be executed by the four safety measure tasks in the safety measure task set in the S301 according to the standard safety measure rule base of the intelligent substation to form a bus interval safety measure task rule knowledge base.

Table 11 bus interval safety measure task rule knowledge base table

And S303, on the basis of the step S302, defining a secondary equipment state set of relay protection and self-safety equipment of a corresponding model according to the corresponding safety measure rule requirements in the table 1. The bus protection equipment state set is defined as { input, overhaul and exit }, the intelligent terminal equipment state set is defined as { input, overhaul and exit }, and the identification mechanism of each state in the state set is shown in the following table:

table 12 bus protection equipment state recognition mechanism theory table (merge table 3)

Watch 13 Main transformer protection equipment state control mechanism principle table (merge table 7)

Table 14 intelligent terminal equipment state identification mechanism principle table

And step S304, on the basis of the step S303, forming a safety measure checking rule expert knowledge base based on the safety measure task and the primary and secondary equipment states according to the safety measure relation between the safety measure task and the primary interval state and between the secondary equipment states. The expert knowledge base of the bus bar spacing can be expressed as the following table.

Meter 15 bus interval safety measure task and primary and secondary equipment state corresponding checking rule table

Step S305, on the basis of the step S303, registering the normal running state information and the pressing plate state information of the bus interval primary equipment, the secondary relay protection and the self-installation equipment, registering corresponding trigger conditions according to a trigger-callback mechanism, and performing callback processing to update the equipment states of the primary interval state and the secondary relay protection and the self-installation equipment after the trigger conditions are met. Meanwhile, based on the bus interval safety measure tasks in the step S304 and the safety measure checking rule expert knowledge base of the primary and secondary equipment states, a safety measure checking detection state machine is established, and the execution states of all the safety measure tasks are checked in real time through expected information comparison and measure state confirmation.

And S306, visually outputting the checking result of the safety measure checking and detecting state machine on the basis of the step S305, wherein the output information comprises the name of each safety measure task, the actual state and the expected state of the primary interval, the real-time state and the expected state of the associated secondary relay protection and safety equipment and the safety measure checking result information.

The safety measure checking and detecting state machine triggering condition and the state machine working principle diagram are shown in figure 4.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims

1. The method for checking the execution state of the overhaul safety measure of the intelligent substation is characterized by comprising the following steps of:

and outputting the checking result.

2. The intelligent substation overhaul safety measure execution state checking method according to claim 1, wherein the checking result comprises the following steps:

3. The intelligent substation overhaul safety measure execution state checking method according to claim 2, wherein the step of outputting the checking result comprises the steps of:

4. The intelligent substation overhaul safety measure execution state checking method according to claim 1, wherein the construction method of the safety measure checking rule expert knowledge base based on a safety measure task and a primary and secondary equipment state comprises the following steps:

5. The intelligent substation overhaul safety measure execution state checking method according to claim 4, wherein the step S1 comprises:

6. The intelligent substation overhaul safety measure execution state checking method according to claim 4, characterized in that in the step S2, a primary safety measure rule of each safety measure task in a task set refers to a state requirement of a safety measure task association primary interval, and comprises four types of operation, hot standby and overhaul, a secondary safety measure rule of each safety measure task in the task set is described based on 6 types of typical secondary safety isolation measures in an intelligent substation standard safety measure database, and is respectively ① input device overhaul pressing plates, ② output relay protection device function soft pressing plates, ③ output device GOOSE receiving/sending soft pressing plates, ④ output device SV receiving soft pressing plates ⑤ output intelligent terminal tripping and closing outlet hard pressing plates, and ⑥ pulls out communication optical fibers between devices, wherein the communication optical fibers comprise SV optical fibers and GOOSE optical fibers;

7. The method for checking the execution state of the overhaul safety measure of the intelligent substation according to claim 4, wherein in the step S3, various relay protection and safety devices of the intelligent substation comprise a line protection device, a main transformer protection device, a bus differential protection device and an intelligent terminal; setting a state set of each type of secondary equipment according to different safety measure state requirements of each type of safety measure task on the secondary equipment; the equipment state set for line protection comprises four states of an input state, a maintenance state, a fixed value changing state and an exit state; the main transformer protection equipment state set comprises an input state, a coordination state, a maintenance state and an exit state; the bus protection equipment state set comprises four states of an input state, a first matching state, a second matching state, a maintenance state and an exit state; the intelligent terminal equipment state set comprises an input state, a maintenance state and an exit state.

8. The intelligent substation overhaul safety measure execution state checking method according to claim 7, wherein the line protection input state refers to a state in which a line protection device normally operates, a GOOSE is input according to a fixed value single requirement to send a soft pressing plate and a functional soft pressing plate, and the line protection input state is exited from the state when the line protection device stops operating; the line protection maintenance state refers to a state when the line protection device quits all GOOSE sending soft pressing plates related to the running equipment and puts the pressing plates into maintenance; the line protection value-changing state refers to a state when the line protection device exits all GOOSE sending soft pressing plates except reclosing, exits all differential protection function soft pressing plates and is put into maintenance; line protection exit state: the line protection device is indicated to quit all GOOSE sending soft pressing plates and functional soft pressing plates, and the state of the line protection device when the line protection device is put into maintenance and repair;

9. The intelligent substation overhaul safety measure execution state checking method according to claim 4, wherein in the step S4, the safety measure relations between the safety measure tasks and the primary interval state and the secondary equipment state comprise safety measure relations between ① line interval safety measure tasks and line interval primary state, secondary line protection, bus protection and line intelligent terminal state, safety measure relations between ② main transformer interval safety measure tasks and main transformer interval primary state, secondary main transformer protection, bus protection and main transformer three-side intelligent terminal state, safety measure relations between ③ bus interval safety measure tasks and branch primary interval state, secondary protection, bus protection and branch intelligent terminal state;

and forming an expert knowledge base of safety measure checking rules based on the safety measure task and the primary and secondary equipment states based on the safety measure connection.

10. The utility model provides an intelligent substation overhauls safety measure execution state and checks device which characterized in that includes: