CN103823972A - Method for evaluating and assessing state of relay protection equipment - Google Patents
Method for evaluating and assessing state of relay protection equipment Download PDFInfo
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- CN103823972A CN103823972A CN201410057093.1A CN201410057093A CN103823972A CN 103823972 A CN103823972 A CN 103823972A CN 201410057093 A CN201410057093 A CN 201410057093A CN 103823972 A CN103823972 A CN 103823972A
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Abstract
The invention relates to a method for evaluating and assessing the state of relay protection equipment. The method includes building a relay protection equipment state assessment model according to classical reliability theories and historical maintenance data and combining the relay protection equipment state assessment model with related reference systems to give reasonable assumption for state information missing items of the protection equipment; evaluating and assessing running environments of relay protection devices and secondary circuits, fault-free time of operation boxes, insulation conditions of the circuits, anti-interference measures conditions, blocking conditions, device and circuit inspection conditions and the like according to the state assessment model and acquiring evaluating and assessing results; integrally evaluating the states of the relay protection devices and the states of the secondary circuits by the aid of the relay protection equipment state assessment model according to the evaluating and assessing results of the relay protection devices and the secondary circuits. The method has the advantages that the relay protection equipment maintenance management level and the equipment running reliability can be improved, the maintenance operation time and power grid maintenance shutdown time can be shortened, and the maintenance efficiency can be enhanced.
Description
Technical field
The present invention relates to substation relay protection device Condition-Based Maintenance Technology field, be specifically related to a kind of relay protection device state evaluation and appraisal procedure.
Background technology
Along with the development of modern power network scale and technology, traditional relay protection device overhauls the prophylactic repair pattern adopting, and cannot meet the demand of power network development.In traditional relay protection device prophylactic repair process, because the time between overhauls(TBO) of equipment is fixed, no matter the comprehensive state of status of equipment how, the maintenance of all must mandatoryly stopping transport expires.Traditional prophylactic repair pattern also will complete multinomial overhauling project within the limited time; make overhaul of the equipments without emphasis and specific aim; this not only greatly reduces overhaul efficiency; also easily in actual mechanical process, there is maintenance deficiency and overhaul the problems such as excessive; cause relay protection device repair quality level low, bring and have a strong impact on to electric power netting safe running.
Summary of the invention
The object of the present invention is to provide a kind of relay protection device state evaluation and appraisal procedure, to solve the shortcomings and deficiencies such as the limitation of the traditional relay protection device repair based on condition of component of transformer station, rigid property, non-dynamic property.By evaluation and the appraisal procedure of perfect protective relaying device and secondary circuit, utilize data mining analysis equipment operation information and historic state information, and in conjunction with the data model of relay protection device, relay protection device is carried out to quantitative analysis and monitoring and warning; Formulate relay protection repair based on condition of component strategy according to the result assisted user of state estimation, thereby realize the target of " should repair required, it is required good to repair " of substation relay protection device repair based on condition of component.
The method comprises the following steps:
A kind of relay protection device state evaluation and appraisal procedure, the method comprises the following steps:
(1) and historical mantenance data theoretical according to classical reliability set up relay protection device state estimation model, and in conjunction with reciprocal reference system, the status information lacuna of protection equipment provided to reasonable assumption;
(2) according to state estimation model, the running environment to protective relaying device, device failure free time, device action accuracy, device insulation status, data sampling situation, communication condition, vertical UNICOM road ruuning situation, the poor stream of differential protection check that situation and version and definite value inspection situation are evaluated and assessment, obtain evaluation and the assessment result of protective relaying device;
(3) according to state estimation model, the running environment to secondary circuit, control box failure free time, loop insulation status, interference protection measure situation, infrared temperature situation, corrosion situation, shutoff situation and device loop check situation are evaluated and assessment, obtain evaluation and the assessment result of secondary circuit;
(4), according to the evaluation of protective relaying device and secondary circuit and assessment result, in conjunction with relay protection device state estimation model, protective relaying device and secondary circuit state are carried out to overall assessment.
Further; the detailed process of " running environment according to state estimation model to protective relaying device, device failure free time, device action accuracy, device insulation status, data sampling situation, communication condition, vertical UNICOM road ruuning situation, the poor stream of differential protection check that situation and version and definite value inspection situation are evaluated and assessment, obtain evaluation and the assessment result of protective relaying device " described in step (2) is:
A. according to device temperature image data and in evaluation cycle the length of time of living in, utilize formula
computing equipment environment temperature scoring K1, wherein, Xi is the corresponding score value in power industry appraisal of equipment standard corresponding to device temperature image data, and Bi is the number percent that the residing time accounts for whole evaluation time, in the time that 0 point of shared ratio of time exceedes setting limit value, the scoring of facility environment temperature is 0; According to humidity collection data and in evaluation cycle the length of time of living in, utilize formula
computing equipment ambient humidity scoring K2, wherein, Xi is the corresponding score value in power industry appraisal of equipment standard corresponding to equipment humidity collection data, and Bi is the number percent that the residing time accounts for whole evaluation time, in the time that 0 point of shared ratio of time exceedes setting limit value, the scoring of facility environment humidity is 0; According to facility environment temperature scoring K1 and humidity scoring K2, utilize formula K=(K1 × a%+K2 × b%) comprehensive grading of computing equipment running environment, wherein a% is the factor of influence of device temperature to equipment operating environment in state estimation model, and b% is the factor of influence of equipment humidity to equipment operating environment in state model;
B. utilize the scoring of formula T=T1/T2 calculation element failure free time, wherein T1 is actual failure free time, T2 is for estimating failure free time, T is that device is estimated failure free time multiple, estimates the scoring of failure free time multiple setting device failure free time according to power industry appraisal of equipment standard and device;
C. utilize formula B=B1/B2*100% to ask successively the performance factor of protective device own, protective device same model performance factor, with a batch action accuracy, wherein, B1 is protective device action frequency, B2 is respectively the total action frequency of device, the total action frequency of same model device, with batch total action frequency of device, according to power industry appraisal of equipment standard, determine the performance factor of protective device own, protective device same model performance factor, with batch factor of influence of action accuracy to protective device performance factor, obtain protective device performance factor and scoring corresponding to different performance factor,
D. insulation data and rate of change when the road insulation measurement data of calculating respectively insulation detection device in electric substation cannot be uploaded and can upload time, according to the insulation status scoring in two kinds of situations of power industry appraisal of equipment standard, both products are the comprehensive grading of device insulation status;
E. the electric current that calculating is randomly drawed and voltage channel are respectively organized sampled value CTi and the PTi of measured value, and the deviate of the standard value of high precision pincerlike meter or measuring and control data, and the overall performance of device sampling is evaluated, and evaluation score computing formula is
wherein CTi is the each channel sample value of protection, CTi
standardfor observing and controlling displayed value;
F. carry out the communication condition scoring of calculation element according to formula P=P1*P2+10, the communication condition scoring that wherein P is device, P1 is communicating interrupt and the factor of influence of incorrect frequency to communication condition scoring of setting according to power industry equipment standard, P1 value is generally-2, and P2 is communicating interrupt and wrong frequency;
G. calculate respectively the scoring of hf channel operation conditions and the scoring of optical-fibre channel operation conditions, described hf channel operation conditions score calculation formula is G=G1*G2+10, wherein G is the scoring of hf channel operation conditions, G1 is hf channel communicating interrupt and the factor of influence of alert frequency to the scoring of hf channel operation conditions of setting according to power industry standard, G1 value is generally-2, and G2 is hf channel communicating interrupt and alert frequency; Determine the optical-fibre channel operation conditions scoring under the different bit error rates, packet loss and channel time delay multiple according to the optical-fibre channel bit error rate, packet loss and channel time delay multiple and power industry standard, optical-fibre channel ruuning situation comprehensive grading equal the scoring of optical-fibre channel operation conditions divided by optical-fibre channel alarm interruption times add 1 and;
H. calculate the scoring of the poor stream inspection of differential protection situation according to the raw data of the poor stream of differential protection and theoretical value range, when the flow valuve of being on duty is less than raw data, poor flow data is marked as the highest, the flow valuve of being on duty is between raw data and theoretical value range time, increase scoring with poor flow valuve is successively decreased, when the flow valuve of being on duty is greater than theoretical value range, poor flow data scoring is for minimum;
I. according to the whether power industry appraisal of equipment standard software version inspection situation scoring of making peace of software version; according to the whether power industry appraisal of equipment standard protection definite value scoring of making peace of protection definite value, the comprehensive grading scoring of software version inspection situation and the scoring of protection definite value and that be version and definite value and check situation.
Further, " running environment, control box failure free time, loop insulation status, interference protection measure situation, infrared temperature situation, corrosion situation, shutoff situation and device loop check situation according to state estimation model to secondary circuit are evaluated and assessment, obtain evaluation and the assessment result of secondary circuit " detailed process described in step (3) is:
A. according to secondary circuit temperature acquisition data and in evaluation cycle the length of time of living in, utilize formula
computing equipment environment temperature scoring K1, wherein, Xi is the corresponding score value in power industry appraisal of equipment standard corresponding to secondary circuit temperature acquisition data, Bi is the number percent that the residing time accounts for whole evaluation time, in the time that 0 point of shared ratio of time exceedes setting limit value, the scoring of secondary circuit environment temperature is 0; According to secondary circuit humidity collection data counting device ambient humidity scoring K2, in the time that humidity is less than the humidity minimum value of setting, secondary circuit humidity is marked as the highest, when the humidity minimum value that is greater than setting when humidity is less than humidity maximal value, the scoring of secondary circuit humidity is successively decreased with humidity increase, in the time that humidity is greater than the humidity maximal value of setting, the scoring of secondary circuit humidity is for minimum; According to secondary circuit environment temperature scoring K1 and humidity scoring K2, utilize formula K=(K1+K2)/2 calculate the comprehensive grading of secondary circuit running environment;
B. utilize formula T=T3/T4 to calculate the scoring of secondary circuit failure free time, wherein T3 is actual failure free time, T4 is for estimating failure free time, T is that device is estimated failure free time multiple, estimates the scoring of failure free time multiple setting device failure free time according to power industry appraisal of equipment standard and device;
C. calculate respectively the scoring of same model control box familial failure free time, mark with batch operation case familial failure free time, and according to the scoring of same model control box familial failure free time with the batch operation case familial failure free time scoring factor of influence to secondary cable familial failure free time evaluation comprehensive grading and control box familial failure free time evaluation comprehensive grading respectively, determine that secondary cable familial failure free time is evaluated comprehensive grading and control box familial failure free time is evaluated comprehensive grading; The minimum value that secondary cable familial failure free time is evaluated in comprehensive grading and control box familial failure free time evaluation comprehensive grading is secondary circuit familial failure free time evaluation comprehensive grading;
D. insulation data and rate of change when the road insulation measurement data of calculating respectively insulation detection device in electric substation cannot be uploaded and can upload time, according to the insulation status scoring in two kinds of situations of power industry appraisal of equipment standard, both products are the comprehensive grading of secondary circuit insulation status;
E. calculate the scoring of secondary circuit interference protection measure according to formula E=E1*E2+10, wherein E1 is according to the anti-interference counter not factor of influence of quantity performed to the scoring of secondary circuit interference protection measure of arranging of the secondary circuit of power industry appraisal of equipment standard, generally get-2, E2 is the anti-interference counter not quantity performed of arranging in secondary circuit;
F. according to the standard value of power industry appraisal of equipment standard secondary circuit infrared temperature, in the time that the infrared temperature value of secondary circuit is less than standard value, secondary circuit infrared temperature is evaluated score value for the highest, in the time that the infrared temperature value of secondary circuit is greater than standard value and is less than standard value and adds 15 degrees Celsius, secondary circuit infrared temperature is evaluated score value and is raise and successively decrease with-2/3 ratio with temperature;
G. calculate respectively the scoring of corrosion situation and the scoring of terminal box infiltration phenomenon of secondary circuit, in the time that the rotten degree of rust is less than the minimum value of the rotten degree set of becoming rusty, the scoring of corrosion situation is the highest, when the minimum value that is greater than the rotten degree set of becoming rusty when the rotten degree of rust is less than the maximal value of setting, the scoring of corrosion situation is successively decreased with-1 factor of influence, general minimum value is set as 5%, and maximal value is set as 15%; When terminal box is without infiltration when phenomenon, terminal box infiltration phenomenon is marked as the highest, otherwise is minimum; The product of the corrosion situation scoring of secondary circuit and the scoring of terminal box infiltration phenomenon is the comprehensive grading of secondary circuit corrosion situation;
H. determine in secondary circuit and do not complete fireproof blocking and the factor of influence H1 of fire prevention measure quantity to the scoring of secondary circuit shutoff situation according to power industry equipment evaluation criteria, the computing formula of secondary circuit shutoff situation scoring is H=H1*H+5; Wherein H1 does not complete fireproof blocking and the factor of influence of fire prevention measure quantity to the scoring of secondary circuit shutoff situation in secondary circuit, and H does not complete fireproof blocking and fire prevention measure quantity in secondary circuit, and H is the scoring of secondary circuit shutoff situation;
I. whether correctly determine the scoring of secondary circuit inspection situation according to wiring, if wiring is correct, scoring is best result, if wiring error, scoring is for minimum point.
Beneficial effect of the present invention is:
(1) it is more accurate that the present invention not only makes the state evaluation of protective relaying device and secondary circuit, also the core index of protective relaying device and secondary circuit carried out to labor.According to the chife failure models of protective relaying device and secondary circuit and corresponding characteristic quantity, determine corresponding evaluation detailed rules and regulations, and be optimized evaluating detailed rules and regulations in conjunction with the actual conditions of current state maintenance.
(2) the present invention can make relay protection device Decision-making of Condition-based Maintenance possess science, and service work emphasis is transferred on the equipment of being badly in need of maintenance, makes turnaround plan have more specific aim.Thereby the overhaul management level that has not only greatly improved relay protection device, has increased relay protection device reliability of operation, has also greatly shortened the idle time of conventional service work and grid maintenance, has improved overhaul efficiency.
Embodiment
The method comprises the following steps:
A kind of relay protection device state evaluation and appraisal procedure, the method comprises the following steps:
(1) and historical mantenance data theoretical according to classical reliability set up relay protection device state estimation model, and in conjunction with reciprocal reference system, the status information lacuna of protection equipment provided to reasonable assumption;
(2) according to state estimation model, the running environment to protective relaying device, device failure free time, device action accuracy, device insulation status, data sampling situation, communication condition, vertical UNICOM road ruuning situation, the poor stream of differential protection check that situation and version and definite value inspection situation are evaluated and assessment, obtain evaluation and the assessment result of protective relaying device;
(3) according to state estimation model, the running environment to secondary circuit, control box failure free time, loop insulation status, interference protection measure situation, infrared temperature situation, corrosion situation, shutoff situation and device loop check situation are evaluated and assessment, obtain evaluation and the assessment result of secondary circuit;
(4), according to the evaluation of protective relaying device and secondary circuit and assessment result, in conjunction with relay protection device state estimation model, protective relaying device and secondary circuit state are carried out to overall assessment.
Further; the detailed process of " running environment according to state estimation model to protective relaying device, device failure free time, device action accuracy, device insulation status, data sampling situation, communication condition, vertical UNICOM road ruuning situation, the poor stream of differential protection check that situation and version and definite value inspection situation are evaluated and assessment, obtain evaluation and the assessment result of protective relaying device " described in step (2) is:
A. according to device temperature image data and in evaluation cycle the length of time of living in, utilize formula
computing equipment environment temperature scoring K1, wherein, Xi is the corresponding score value in power industry appraisal of equipment standard corresponding to device temperature image data, and Bi is the number percent that the residing time accounts for whole evaluation time, in the time that 0 point of shared ratio of time exceedes setting limit value, the scoring of facility environment temperature is 0; According to humidity collection data and in evaluation cycle the length of time of living in, utilize formula
computing equipment ambient humidity scoring K2, wherein, Xi is the corresponding score value in power industry appraisal of equipment standard corresponding to equipment humidity collection data, and Bi is the number percent that the residing time accounts for whole evaluation time, in the time that 0 point of shared ratio of time exceedes setting limit value, the scoring of facility environment humidity is 0; According to facility environment temperature scoring K1 and humidity scoring K2, utilize formula K=(K1 × a%+K2 × b%) comprehensive grading of computing equipment running environment, wherein a% is the factor of influence of device temperature to equipment operating environment in state estimation model, and b% is the factor of influence of equipment humidity to equipment operating environment in state model;
B. utilize the scoring of formula T=T1/T2 calculation element failure free time, wherein T1 is actual failure free time, T2 is for estimating failure free time, T is that device is estimated failure free time multiple, estimates the scoring of failure free time multiple setting device failure free time according to power industry appraisal of equipment standard and device;
C. utilize formula B=B1/B2*100% to ask successively the performance factor of protective device own, protective device same model performance factor, with a batch action accuracy, wherein, B1 is protective device action frequency, B2 is respectively the total action frequency of device, the total action frequency of same model device, with batch total action frequency of device, according to power industry appraisal of equipment standard, determine the performance factor of protective device own, protective device same model performance factor, with batch factor of influence of action accuracy to protective device performance factor, obtain protective device performance factor and scoring corresponding to different performance factor,
D. insulation data and rate of change when the road insulation measurement data of calculating respectively insulation detection device in electric substation cannot be uploaded and can upload time, according to the insulation status scoring in two kinds of situations of power industry appraisal of equipment standard, both products are the comprehensive grading of device insulation status;
E. the electric current that calculating is randomly drawed and voltage channel are respectively organized sampled value CTi and the PTi of measured value, and the deviate of the standard value of high precision pincerlike meter or measuring and control data, and the overall performance of device sampling is evaluated, and evaluation score computing formula is
wherein CTi is the each channel sample value of protection, CTi
standardfor observing and controlling displayed value;
F. carry out the communication condition scoring of calculation element according to formula P=P1*P2+10, the communication condition scoring that wherein P is device, P1 is communicating interrupt and the factor of influence of incorrect frequency to communication condition scoring of setting according to power industry equipment standard, P1 value is generally-2, and P2 is communicating interrupt and wrong frequency;
G. calculate respectively the scoring of hf channel operation conditions and the scoring of optical-fibre channel operation conditions, described hf channel operation conditions score calculation formula is G=G1*G2+10, wherein G is the scoring of hf channel operation conditions, G1 is hf channel communicating interrupt and the factor of influence of alert frequency to the scoring of hf channel operation conditions of setting according to power industry standard, G1 value is generally-2, and G2 is hf channel communicating interrupt and alert frequency; Determine the optical-fibre channel operation conditions scoring under the different bit error rates, packet loss and channel time delay multiple according to the optical-fibre channel bit error rate, packet loss and channel time delay multiple and power industry standard, optical-fibre channel ruuning situation comprehensive grading equal the scoring of optical-fibre channel operation conditions divided by optical-fibre channel alarm interruption times add 1 and;
H. calculate the scoring of the poor stream inspection of differential protection situation according to the raw data of the poor stream of differential protection and theoretical value range, when the flow valuve of being on duty is less than raw data, poor flow data is marked as the highest, the flow valuve of being on duty is between raw data and theoretical value range time, increase scoring with poor flow valuve is successively decreased, when the flow valuve of being on duty is greater than theoretical value range, poor flow data scoring is for minimum;
I. according to the whether power industry appraisal of equipment standard software version inspection situation scoring of making peace of software version; according to the whether power industry appraisal of equipment standard protection definite value scoring of making peace of protection definite value, the comprehensive grading scoring of software version inspection situation and the scoring of protection definite value and that be version and definite value and check situation.
Further, " running environment, control box failure free time, loop insulation status, interference protection measure situation, infrared temperature situation, corrosion situation, shutoff situation and device loop check situation according to state estimation model to secondary circuit are evaluated and assessment, obtain evaluation and the assessment result of secondary circuit " detailed process described in step (3) is:
A. according to secondary circuit temperature acquisition data and in evaluation cycle the length of time of living in, utilize formula
computing equipment environment temperature scoring K1, wherein, Xi is the corresponding score value in power industry appraisal of equipment standard corresponding to secondary circuit temperature acquisition data, Bi is the number percent that the residing time accounts for whole evaluation time, in the time that 0 point of shared ratio of time exceedes setting limit value, the scoring of secondary circuit environment temperature is 0; According to secondary circuit humidity collection data counting device ambient humidity scoring K2, in the time that humidity is less than the humidity minimum value of setting, secondary circuit humidity is marked as the highest, when the humidity minimum value that is greater than setting when humidity is less than humidity maximal value, the scoring of secondary circuit humidity is successively decreased with humidity increase, in the time that humidity is greater than the humidity maximal value of setting, the scoring of secondary circuit humidity is for minimum; According to secondary circuit environment temperature scoring K1 and humidity scoring K2, utilize formula K=(K1+K2)/2 calculate the comprehensive grading of secondary circuit running environment;
B. utilize formula T=T3/T4 to calculate the scoring of secondary circuit failure free time, wherein T3 is actual failure free time, T4 is for estimating failure free time, T is that device is estimated failure free time multiple, estimates the scoring of failure free time multiple setting device failure free time according to power industry appraisal of equipment standard and device;
C. calculate respectively the scoring of same model control box familial failure free time, mark with batch operation case familial failure free time, and according to the scoring of same model control box familial failure free time with the batch operation case familial failure free time scoring factor of influence to secondary cable familial failure free time evaluation comprehensive grading and control box familial failure free time evaluation comprehensive grading respectively, determine that secondary cable familial failure free time is evaluated comprehensive grading and control box familial failure free time is evaluated comprehensive grading; The minimum value that secondary cable familial failure free time is evaluated in comprehensive grading and control box familial failure free time evaluation comprehensive grading is secondary circuit familial failure free time evaluation comprehensive grading;
D. insulation data and rate of change when the road insulation measurement data of calculating respectively insulation detection device in electric substation cannot be uploaded and can upload time, according to the insulation status scoring in two kinds of situations of power industry appraisal of equipment standard, both products are the comprehensive grading of secondary circuit insulation status;
E. calculate the scoring of secondary circuit interference protection measure according to formula E=E1*E2+10, wherein E1 is according to the anti-interference counter not factor of influence of quantity performed to the scoring of secondary circuit interference protection measure of arranging of the secondary circuit of power industry appraisal of equipment standard, generally get-2, E2 is the anti-interference counter not quantity performed of arranging in secondary circuit;
F. according to the standard value of power industry appraisal of equipment standard secondary circuit infrared temperature, in the time that the infrared temperature value of secondary circuit is less than standard value, secondary circuit infrared temperature is evaluated score value for the highest, in the time that the infrared temperature value of secondary circuit is greater than standard value and is less than standard value and adds 15 degrees Celsius, secondary circuit infrared temperature is evaluated score value and is raise and successively decrease with-2/3 ratio with temperature;
G. calculate respectively the scoring of corrosion situation and the scoring of terminal box infiltration phenomenon of secondary circuit, in the time that the rotten degree of rust is less than the minimum value of the rotten degree set of becoming rusty, the scoring of corrosion situation is the highest, when the minimum value that is greater than the rotten degree set of becoming rusty when the rotten degree of rust is less than the maximal value of setting, the scoring of corrosion situation is successively decreased with-1 factor of influence, general minimum value is set as 5%, and maximal value is set as 15%; When terminal box is without infiltration when phenomenon, terminal box infiltration phenomenon is marked as the highest, otherwise is minimum; The product of the corrosion situation scoring of secondary circuit and the scoring of terminal box infiltration phenomenon is the comprehensive grading of secondary circuit corrosion situation;
H. determine in secondary circuit and do not complete fireproof blocking and the factor of influence H1 of fire prevention measure quantity to the scoring of secondary circuit shutoff situation according to power industry equipment evaluation criteria, the computing formula of secondary circuit shutoff situation scoring is H=H1*H+5; Wherein H1 does not complete fireproof blocking and the factor of influence of fire prevention measure quantity to the scoring of secondary circuit shutoff situation in secondary circuit, and H does not complete fireproof blocking and fire prevention measure quantity in secondary circuit, and H is the scoring of secondary circuit shutoff situation;
I. whether correctly determine the scoring of secondary circuit inspection situation according to wiring, if wiring is correct, scoring is best result, if wiring error, scoring is for minimum point.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.
Claims (3)
1. relay protection device state evaluation and an appraisal procedure, is characterized in that: the method comprises the following steps:
(1) and historical mantenance data theoretical according to classical reliability set up relay protection device state estimation model, and in conjunction with reciprocal reference system, the status information lacuna of protection equipment provided to reasonable assumption;
(2) according to state estimation model, the running environment to protective relaying device, device failure free time, device action accuracy, device insulation status, data sampling situation, communication condition, vertical UNICOM road ruuning situation, the poor stream of differential protection check that situation and version and definite value inspection situation are evaluated and assessment, obtain evaluation and the assessment result of protective relaying device;
(3) according to state estimation model, the running environment to secondary circuit, control box failure free time, loop insulation status, interference protection measure situation, infrared temperature situation, corrosion situation, shutoff situation and device loop check situation are evaluated and assessment, obtain evaluation and the assessment result of secondary circuit;
(4), according to the evaluation of protective relaying device and secondary circuit and assessment result, in conjunction with relay protection device state estimation model, protective relaying device and secondary circuit state are carried out to overall assessment.
2. a kind of relay protection device state evaluation according to claim 1 and appraisal procedure; it is characterized in that: the detailed process of " running environment according to state estimation model to protective relaying device, device failure free time, device action accuracy, device insulation status, data sampling situation, communication condition, vertical UNICOM road ruuning situation, the poor stream of differential protection check that situation and version and definite value inspection situation are evaluated and assessment, obtain evaluation and the assessment result of protective relaying device " described in step (2) is:
A. according to device temperature image data and in evaluation cycle the length of time of living in, utilize formula
computing equipment environment temperature scoring K1, wherein, Xi is the corresponding score value in power industry appraisal of equipment standard corresponding to device temperature image data, and Bi is the number percent that the residing time accounts for whole evaluation time, in the time that 0 point of shared ratio of time exceedes setting limit value, the scoring of facility environment temperature is 0; According to humidity collection data and in evaluation cycle the length of time of living in, utilize formula
computing equipment ambient humidity scoring K2, wherein, Xi is the corresponding score value in power industry appraisal of equipment standard corresponding to equipment humidity collection data, and Bi is the number percent that the residing time accounts for whole evaluation time, in the time that 0 point of shared ratio of time exceedes setting limit value, the scoring of facility environment humidity is 0; According to facility environment temperature scoring K1 and humidity scoring K2, utilize formula K=(K1 × a%+K2 × b%) comprehensive grading of computing equipment running environment, wherein a% is the factor of influence of device temperature to equipment operating environment in state estimation model, and b% is the factor of influence of equipment humidity to equipment operating environment in state model;
B. utilize the scoring of formula T=T1/T2 calculation element failure free time, wherein T1 is actual failure free time, T2 is for estimating failure free time, T is that device is estimated failure free time multiple, estimates the scoring of failure free time multiple setting device failure free time according to power industry appraisal of equipment standard and device;
C. utilize formula B=B1/B2*100% to ask successively the performance factor of protective device own, protective device same model performance factor, with a batch action accuracy, wherein, B1 is protective device action frequency, B2 is respectively the total action frequency of device, the total action frequency of same model device, with batch total action frequency of device, according to power industry appraisal of equipment standard, determine the performance factor of protective device own, protective device same model performance factor, with batch factor of influence of action accuracy to protective device performance factor, obtain protective device performance factor and scoring corresponding to different performance factor,
D. insulation data and rate of change when the road insulation measurement data of calculating respectively insulation detection device in electric substation cannot be uploaded and can upload time, according to the insulation status scoring in two kinds of situations of power industry appraisal of equipment standard, both products are the comprehensive grading of device insulation status;
E. the electric current that calculating is randomly drawed and voltage channel are respectively organized sampled value CTi and the PTi of measured value, and the deviate of the standard value of high precision pincerlike meter or measuring and control data, and the overall performance of device sampling is evaluated, and evaluation score computing formula is
wherein CTi is the each channel sample value of protection, CTi
standardfor observing and controlling displayed value;
F. carry out the communication condition scoring of calculation element according to formula P=P1*P2+10, the communication condition scoring that wherein P is device, P1 is communicating interrupt and the factor of influence of incorrect frequency to communication condition scoring of setting according to power industry equipment standard, P1 value is generally-2, and P2 is communicating interrupt and wrong frequency;
G. calculate respectively the scoring of hf channel operation conditions and the scoring of optical-fibre channel operation conditions, described hf channel operation conditions score calculation formula is G=G1*G2+10, wherein G is the scoring of hf channel operation conditions, G1 is hf channel communicating interrupt and the factor of influence of alert frequency to the scoring of hf channel operation conditions of setting according to power industry standard, G1 value is generally-2, and G2 is hf channel communicating interrupt and alert frequency; Determine the optical-fibre channel operation conditions scoring under the different bit error rates, packet loss and channel time delay multiple according to the optical-fibre channel bit error rate, packet loss and channel time delay multiple and power industry standard, optical-fibre channel ruuning situation comprehensive grading equal the scoring of optical-fibre channel operation conditions divided by optical-fibre channel alarm interruption times add 1 and;
H. calculate the scoring of the poor stream inspection of differential protection situation according to the raw data of the poor stream of differential protection and theoretical value range, when the flow valuve of being on duty is less than raw data, poor flow data is marked as the highest, the flow valuve of being on duty is between raw data and theoretical value range time, increase scoring with poor flow valuve is successively decreased, when the flow valuve of being on duty is greater than theoretical value range, poor flow data scoring is for minimum;
I. according to the whether power industry appraisal of equipment standard software version inspection situation scoring of making peace of software version; according to the whether power industry appraisal of equipment standard protection definite value scoring of making peace of protection definite value, the comprehensive grading scoring of software version inspection situation and the scoring of protection definite value and that be version and definite value and check situation.
3. a kind of relay protection device state evaluation according to claim 1 and appraisal procedure; it is characterized in that: " running environment, control box failure free time, loop insulation status, interference protection measure situation, infrared temperature situation, corrosion situation, shutoff situation and device loop check situation according to state estimation model to secondary circuit are evaluated and assessment, obtain evaluation and the assessment result of the secondary circuit " detailed process described in step (3) is:
A. according to secondary circuit temperature acquisition data and in evaluation cycle the length of time of living in, utilize formula
computing equipment environment temperature scoring K1, wherein, Xi is the corresponding score value in power industry appraisal of equipment standard corresponding to secondary circuit temperature acquisition data, Bi is the number percent that the residing time accounts for whole evaluation time, in the time that 0 point of shared ratio of time exceedes setting limit value, the scoring of secondary circuit environment temperature is 0; According to secondary circuit humidity collection data counting device ambient humidity scoring K2, in the time that humidity is less than the humidity minimum value of setting, secondary circuit humidity is marked as the highest, when the humidity minimum value that is greater than setting when humidity is less than humidity maximal value, the scoring of secondary circuit humidity is successively decreased with humidity increase, in the time that humidity is greater than the humidity maximal value of setting, the scoring of secondary circuit humidity is for minimum; According to secondary circuit environment temperature scoring K1 and humidity scoring K2, utilize formula K=(K1+K2)/2 calculate the comprehensive grading of secondary circuit running environment;
B. utilize formula T=T3/T4 to calculate the scoring of secondary circuit failure free time, wherein T3 is actual failure free time, T4 is for estimating failure free time, T is that device is estimated failure free time multiple, estimates the scoring of failure free time multiple setting device failure free time according to power industry appraisal of equipment standard and device;
C. calculate respectively the scoring of same model control box familial failure free time, mark with batch operation case familial failure free time, and according to the scoring of same model control box familial failure free time with the batch operation case familial failure free time scoring factor of influence to secondary cable familial failure free time evaluation comprehensive grading and control box familial failure free time evaluation comprehensive grading respectively, determine that secondary cable familial failure free time is evaluated comprehensive grading and control box familial failure free time is evaluated comprehensive grading; The minimum value that secondary cable familial failure free time is evaluated in comprehensive grading and control box familial failure free time evaluation comprehensive grading is secondary circuit familial failure free time evaluation comprehensive grading;
D. insulation data and rate of change when the road insulation measurement data of calculating respectively insulation detection device in electric substation cannot be uploaded and can upload time, according to the insulation status scoring in two kinds of situations of power industry appraisal of equipment standard, both products are the comprehensive grading of secondary circuit insulation status;
E. calculate the scoring of secondary circuit interference protection measure according to formula E=E1*E2+10, wherein E1 is according to the anti-interference counter not factor of influence of quantity performed to the scoring of secondary circuit interference protection measure of arranging of the secondary circuit of power industry appraisal of equipment standard, generally get-2, E2 is the anti-interference counter not quantity performed of arranging in secondary circuit;
F. according to the standard value of power industry appraisal of equipment standard secondary circuit infrared temperature, in the time that the infrared temperature value of secondary circuit is less than standard value, secondary circuit infrared temperature is evaluated score value for the highest, in the time that the infrared temperature value of secondary circuit is greater than standard value and is less than standard value and adds 15 degrees Celsius, secondary circuit infrared temperature is evaluated score value and is raise and successively decrease with-2/3 ratio with temperature;
G. calculate respectively the scoring of corrosion situation and the scoring of terminal box infiltration phenomenon of secondary circuit, in the time that the rotten degree of rust is less than the minimum value of the rotten degree set of becoming rusty, the scoring of corrosion situation is the highest, when the minimum value that is greater than the rotten degree set of becoming rusty when the rotten degree of rust is less than the maximal value of setting, the scoring of corrosion situation is successively decreased with-1 factor of influence, general minimum value is set as 5%, and maximal value is set as 15%; When terminal box is without infiltration when phenomenon, terminal box infiltration phenomenon is marked as the highest, otherwise is minimum; The product of the corrosion situation scoring of secondary circuit and the scoring of terminal box infiltration phenomenon is the comprehensive grading of secondary circuit corrosion situation;
H. determine in secondary circuit and do not complete fireproof blocking and the factor of influence H1 of fire prevention measure quantity to the scoring of secondary circuit shutoff situation according to power industry equipment evaluation criteria, the computing formula of secondary circuit shutoff situation scoring is H=H1*H+5; Wherein H1 does not complete fireproof blocking and the factor of influence of fire prevention measure quantity to the scoring of secondary circuit shutoff situation in secondary circuit, and H does not complete fireproof blocking and fire prevention measure quantity in secondary circuit, and H is the scoring of secondary circuit shutoff situation;
I. whether correctly determine the scoring of secondary circuit inspection situation according to wiring, if wiring is correct, scoring is best result, if wiring error, scoring is for minimum point.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077493A (en) * | 2014-07-12 | 2014-10-01 | 东北电力大学 | Method for constructing state evaluation index system of electric relaying protection system |
| CN104462745A (en) * | 2014-10-14 | 2015-03-25 | 国家电网公司 | Evaluation method for information equipment state quantity |
| CN104573419A (en) * | 2014-11-19 | 2015-04-29 | 北京邮电大学 | Mobile application software protection effectiveness evaluation method and device |
| CN106251072A (en) * | 2016-07-29 | 2016-12-21 | 国网江苏省电力公司镇江供电公司 | A kind of secondary equipment of intelligent converting station operation risk assessment method and apparatus |
| CN104166785B (en) * | 2014-07-14 | 2017-04-12 | 国家电网公司 | Indicator system for evaluating reliability of microcomputer relay protection device |
| CN106771729A (en) * | 2016-12-05 | 2017-05-31 | 国网安徽省电力公司淮南供电公司 | A kind of relay protection device risk evaluating system and method |
| CN107918690A (en) * | 2017-09-27 | 2018-04-17 | 国网安徽省电力有限公司 | A kind of relay protection device state evaluating method based on BP neural network algorithm |
| CN109325950A (en) * | 2018-10-19 | 2019-02-12 | 国网黑龙江省电力有限公司电力科学研究院 | The intelligent inspection system of electrical secondary system based on image recognition |
| CN111830340A (en) * | 2020-06-18 | 2020-10-27 | 中国电力科学研究院有限公司 | Method and device for evaluating performance of relay protection device |
| CN111934338A (en) * | 2020-07-27 | 2020-11-13 | 华北电力科学研究院有限责任公司 | Operation evaluation method and device for flexible direct-current power grid line protection |
| CN117519117A (en) * | 2024-01-08 | 2024-02-06 | 北京星网船电科技有限公司 | Multifunctional console control method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6327542B1 (en) * | 1999-07-21 | 2001-12-04 | Hewlett-Packard Company | System and method for approximating the coupling voltage noise on a node |
| CN102945315A (en) * | 2012-10-25 | 2013-02-27 | 华北电力大学 | Fully-digital relay protection reliability system based on software failure and human failure, and evaluation method of system |
| CN103218695A (en) * | 2013-05-03 | 2013-07-24 | 国家电网公司 | Secondary equipment intelligence state evaluation diagnostic system and method thereof |
| CN103312030A (en) * | 2012-03-08 | 2013-09-18 | 国家电网公司 | Electrical device monitoring system and method |
-
2014
- 2014-02-18 CN CN201410057093.1A patent/CN103823972A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6327542B1 (en) * | 1999-07-21 | 2001-12-04 | Hewlett-Packard Company | System and method for approximating the coupling voltage noise on a node |
| CN103312030A (en) * | 2012-03-08 | 2013-09-18 | 国家电网公司 | Electrical device monitoring system and method |
| CN102945315A (en) * | 2012-10-25 | 2013-02-27 | 华北电力大学 | Fully-digital relay protection reliability system based on software failure and human failure, and evaluation method of system |
| CN103218695A (en) * | 2013-05-03 | 2013-07-24 | 国家电网公司 | Secondary equipment intelligence state evaluation diagnostic system and method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 单体华: "继电保护设备状态检修研究与实现", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 叶远波等: "继电保护状态检修在现代电网中的应用研究", 《华东电力》 * |
| 周晨: "台州电网继电保护状态检修评估体系的构建", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 周炎涛等: "RBF神经网络在电气设备状态评估中的应用", 《航空计算技术》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077493B (en) * | 2014-07-12 | 2017-01-25 | 东北电力大学 | Method for constructing state evaluation index system of electric relaying protection system |
| CN104077493A (en) * | 2014-07-12 | 2014-10-01 | 东北电力大学 | Method for constructing state evaluation index system of electric relaying protection system |
| CN104166785B (en) * | 2014-07-14 | 2017-04-12 | 国家电网公司 | Indicator system for evaluating reliability of microcomputer relay protection device |
| CN104462745A (en) * | 2014-10-14 | 2015-03-25 | 国家电网公司 | Evaluation method for information equipment state quantity |
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| CN106251072A (en) * | 2016-07-29 | 2016-12-21 | 国网江苏省电力公司镇江供电公司 | A kind of secondary equipment of intelligent converting station operation risk assessment method and apparatus |
| CN106771729A (en) * | 2016-12-05 | 2017-05-31 | 国网安徽省电力公司淮南供电公司 | A kind of relay protection device risk evaluating system and method |
| CN107918690A (en) * | 2017-09-27 | 2018-04-17 | 国网安徽省电力有限公司 | A kind of relay protection device state evaluating method based on BP neural network algorithm |
| CN109325950A (en) * | 2018-10-19 | 2019-02-12 | 国网黑龙江省电力有限公司电力科学研究院 | The intelligent inspection system of electrical secondary system based on image recognition |
| CN111830340A (en) * | 2020-06-18 | 2020-10-27 | 中国电力科学研究院有限公司 | Method and device for evaluating performance of relay protection device |
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