CN112083695B - Intelligent substation interval electrical equipment measurement and control system and method - Google Patents
Intelligent substation interval electrical equipment measurement and control system and method Download PDFInfo
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/4184—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by fault tolerance, reliability of production system
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/41845—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by system universality, reconfigurability, modularity
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by the network communication
- G05B19/41855—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by the network communication by local area network [LAN], network structure
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
- G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a measurement and control system and a measurement and control method for an intelligent substation interval electrical device, wherein the measurement and control system comprises: the single-interval entity measurement and control module and the cluster measurement and control module; the single-interval entity measurement and control module comprises a plurality of single-interval entity measurement and control units, and the single-interval entity measurement and control units measure and control the interval electrical equipment of the intelligent substation; the cluster measurement and control module comprises interval virtual measurement and control units which are in one-to-one correspondence with the single interval entity measurement and control units, detects state signals of the single interval entity measurement and control units in real time, and switches the single interval entity measurement and control units into corresponding interval virtual measurement and control units when the single interval entity measurement and control units fail. By adopting a mode of single-interval entity measurement and control and cluster measurement and control, the virtual measurement and control units are in one-to-one correspondence with the entity measurement and control units, and the corresponding virtual measurement and control units are switched after the entity measurement and control units fail, so that the problem that the measurement and control configuration of a bay level is single and has no redundant standby is solved, and the robustness and the reliability of the intelligent substation monitoring system are improved.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a measurement and control system and method for interval electrical equipment of an intelligent substation.
Background
The electric power industry develops intelligent substation from 2009 to build and gradually popularize and apply on a large scale, and for traditional transformer substation, intelligent substation has a great deal of advantage, mainly embodies: (1) and digital signal transmission and processing are adopted, so that the method is wide in application range, high in precision, stable and efficient, and convenient for data sharing. And (2) the IEC 61850 protocol is comprehensively adopted, the information and communication models are unified, and the digital acquisition and networked information exchange of the transformer substation information are realized by adopting a three-layer two-network layered architecture. At present, the measurement and control devices of the intelligent transformer substation which are operated at home are all configured in a single set, the measurement and control functions are realized at intervals, and functional redundancy is lacked. Measurement and control function redundancy is researched at home, and the function redundancy is realized by adopting double-configuration interval measurement and control, but the simple double-configuration increases the equipment quantity and increases the operation and maintenance workload and the investment cost. In 2012, the power industry makes an attempt of inter-interval function integration on a new generation of intelligent transformer substation, and a multifunctional measurement and control mode integrating measurement and control, PMU and metering functions is adopted, so that the mode only reduces the number of devices in the substation, the self-healing of the inter-interval measurement and control function is not realized, and the integration of multiple specialties also increases the field operation and maintenance difficulty. Since 2015, a more extensive and intensive research is carried out on integrated measurement and control, and a multi-interval measurement and control centralized scheme based on a grouping principle is provided, wherein measurement and control function redundancy is realized through integrated measurement and control dualized configuration, but dynamic deployment of interval functions cannot be realized based on a mode of interval function similar to related integration, and the operation convenience and the reconstruction and expansion convenience are poor.
At present, the transformer substation measurement and control device has some defects in the actual operation process, and mainly has the following points: firstly, the redundancy of the functions of secondary equipment is insufficient, a bay level measurement and control device is in single-set configuration, the measurement and control functions lack self-healing capability after the device fails, and the hidden dangers of data interruption and remote control failure caused by single-point failure exist, so that the safe and stable operation of a power system is seriously influenced; secondly, the integration and optimization of the overall functions of the secondary system are insufficient, the hardware of the device is repeatedly configured, the intelligent level of the secondary equipment is low, the information sharing is insufficient, the coordination and function optimization of a total station system layer are lacked, the overall investment cost is high, and the operation and maintenance cost is high; and thirdly, compared with a conventional transformer substation, the number of secondary equipment is greatly increased, the coupling degree between the equipment is high, the amount of interaction information is large, the fault location is difficult, the isolation measures are complex, the operation safety risk is high, and the daily workload of operation and maintenance personnel is increased.
Disclosure of Invention
The invention aims to provide a measurement and control system and a measurement and control method for interval electrical equipment of an intelligent substation.
In order to solve the above technical problem, a first aspect of the embodiments of the present invention provides a measurement and control system for an intelligent substation bay electrical device, including: the system comprises a single-interval entity measurement and control module and a cluster measurement and control module;
the single-interval entity measurement and control module comprises a plurality of single-interval entity measurement and control units, and the single-interval entity measurement and control units measure and control the interval electrical equipment of the intelligent substation;
the cluster measurement and control module comprises interval virtual measurement and control units which are in one-to-one correspondence with the single interval entity measurement and control units, detects state signals of the single interval entity measurement and control units in real time, and switches the single interval entity measurement and control units into corresponding interval virtual measurement and control units when the single interval entity measurement and control units fail;
the cluster measurement and control module is provided with control mode control words;
when the control mode control word is a first preset value, the cluster measurement and control module is in a manual switching mode, and the single-interval entity measurement and control unit in a fault state can be manually switched to the corresponding interval virtual measurement and control unit;
when the control mode control word is a second preset value, the cluster measurement and control module is in an automatic switching mode, and is automatically switched to the corresponding interval virtual measurement and control unit after receiving a fault signal of the single interval entity measurement and control unit.
Furthermore, the interval virtual measurement and control unit and the corresponding single interval entity measurement and control unit have the same IP address, model, parameter and configuration.
Furthermore, the single-interval entity measurement and control unit and the interval virtual measurement and control unit can carry out self-checking in real time;
the state signal of the single-interval entity measurement and control unit for self-checking comprises: an operational or fault condition;
the state of the interval virtual measurement and control unit for self-checking comprises the following steps: an operational state, a hot standby state, or a fault state.
Furthermore, when the interval virtual measurement and control unit is in a hot standby state or a fault state, the communication functions of the station control layer and the process layer network port are closed;
the network port communication function is closed as follows: and normally receiving the GOOSE and SV of the process layer, normally receiving the GOOSE of the station control layer, not sending the GOOSE of the station control layer and the process layer, not uploading MMS, and not responding to an MMS downlink command.
Further, the cluster measurement and control module further includes: the n-throw and retreat soft pressing plates of the interval virtual measurement and control unit;
when the single-interval entity measurement and control unit fails, the corresponding interval virtual measurement and control unit can be manually put in through the n-throw-in and-out soft pressing plate of the interval virtual measurement and control unit;
wherein N is a numerical range of 1-N, and N is a maximum numerical value of the interval virtual measurement and control unit in the cluster measurement and control module.
Further, when the cluster measurement and control module is in an automatic switching mode, the entity measurement and control module and the cluster measurement and control module perform information interaction through a station control layer GOOSE; and/or
Information interaction among a plurality of interval virtual measurement and control units of the cluster measurement and control module is received and sent through the station control layer GOOSE, and self-receiving and self-sending of messages are achieved through an LOOPBACK LOOPBACK technology; and/or
The cluster measurement and control module forwards the received GOOSE information to the corresponding interval virtual measurement and control unit according to the configuration file, and can simultaneously input a plurality of interval virtual measurement and control units.
Correspondingly, a second aspect of the embodiments of the present invention provides a measurement and control method for inter-bay electrical devices of an intelligent substation, which measures and controls a plurality of inter-bay electrical devices of the intelligent substation by using the measurement and control system for inter-bay electrical devices of an intelligent substation, and includes the following steps:
acquiring state signals of a plurality of single-interval entity measurement and control units in real time;
judging whether the state signal of the single-interval entity measurement and control unit is a fault signal or not;
if the state signal of the single-interval entity measurement and control unit is a fault signal, switching the interval virtual measurement and control unit corresponding to the single-interval entity measurement and control unit in the fault state into an operating state;
and if the state signal of the single-interval entity measurement and control unit is not a fault signal, maintaining the interval virtual measurement and control unit corresponding to the single-interval entity measurement and control unit in a hot standby state.
Further, after switching the interval virtual measurement and control unit corresponding to the single interval entity measurement and control unit in the fault state to the operation state, the method further includes:
detecting a state signal of the single-interval entity measurement and control unit in a fault state in real time;
and if the state signal of the single-interval entity measurement and control unit in the fault state is recovered to be in the running state, switching the corresponding interval virtual measurement and control unit in the running state to be in the hot standby state.
Further, the real-time detection of the status signal of the single-interval entity measurement and control unit in a fault state includes:
detecting the sending states of the GOOSE messages of the process layer and the GOOSE messages of the station control layer in real time;
judging the online state of the single-interval entity measurement and control unit according to the transmitting state of the GOOSE message;
if the interval virtual measurement and control unit receives the process layer GOOSE message and the station level GOOSE message at the same time, determining that the corresponding single interval entity measurement and control unit is in an online state, and locking the input of the interval virtual measurement and control unit;
if the interval virtual measurement and control unit does not receive the process layer GOOSE message and the station control layer GOOSE message at the same time, determining that the corresponding single interval entity measurement and control unit is in an off-line state;
and if the interval virtual measurement and control unit does not receive the process layer GOOSE message and the station control layer GOOSE message, switching the interval virtual measurement and control unit from a hot standby state to an operating state.
The technical scheme of the embodiment of the invention has the following beneficial technical effects:
by adopting a mode of single-interval entity measurement and control and cluster measurement and control for interval electrical equipment of the intelligent substation, the virtual measurement and control units correspond to the entity measurement and control units one to one, and the entity measurement and control units are switched to the corresponding virtual measurement and control units in the cluster measurement and control module after faults, so that the problem that the measurement and control configuration of a bay level is single and has no redundancy standby is solved, the self-healing of the measurement and control function of the interval electrical equipment is realized, and the robustness and the reliability of a monitoring system of the intelligent substation are improved.
Drawings
Fig. 1 is a schematic diagram of a measurement and control system of an intelligent substation bay electrical device according to an embodiment of the present invention;
fig. 2 is a schematic view of information interaction of a measurement and control system of an intelligent substation bay electrical device provided by an embodiment of the invention;
fig. 3 is a logic diagram of automatic switching of the measurement and control system of the inter-bay electrical equipment of the intelligent substation provided by the embodiment of the invention;
fig. 4 is a flowchart of a measurement and control method for inter-bay electrical equipment of an intelligent substation according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings in combination with the embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Fig. 1 is a schematic diagram of a principle of a measurement and control system for an intelligent substation bay electrical device provided by an embodiment of the present invention.
Fig. 2 is a schematic diagram of information interaction of a measurement and control system of an intelligent substation interval electrical device provided by an embodiment of the present invention.
Fig. 3 is a logic diagram of automatic switching of the measurement and control system of the intelligent substation bay electrical equipment provided by the embodiment of the invention.
Referring to fig. 1, fig. 2, and fig. 3, a first aspect of the embodiment of the present invention provides a measurement and control system for inter-bay electrical devices of an intelligent substation, including: the system comprises a single-interval entity measurement and control module and a cluster measurement and control module; the single-interval entity measurement and control module comprises a plurality of single-interval entity measurement and control units, and the single-interval entity measurement and control units measure and control the interval electrical equipment of the intelligent substation; the cluster measurement and control module comprises interval virtual measurement and control units which are in one-to-one correspondence with the single interval entity measurement and control units, detects state signals of a plurality of single interval entity measurement and control units in real time, and switches the single interval entity measurement and control units into corresponding interval virtual measurement and control units when the single interval entity measurement and control units fail; the cluster measurement and control module is provided with control mode control words, when the control mode control words are first preset numerical values, the cluster measurement and control module is in a manual input mode, and single-interval entity measurement and control units in a fault state can be manually switched into corresponding interval virtual measurement and control units. When the control mode control word is a second preset numerical value, the cluster measurement and control module is in an automatic switching mode, and is automatically switched to the corresponding interval virtual measurement and control unit after receiving a fault signal of the single interval entity measurement and control unit.
Optionally, the first preset value is 0; the second predetermined value is 1.
Specifically, the interval virtual measurement and control unit and the corresponding single interval entity measurement and control unit have the same IP address, model, parameter and configuration.
In addition, the single-interval entity measurement and control unit and the interval virtual measurement and control unit can carry out self-checking in real time. The state signal for the single-interval entity measurement and control unit to carry out self-detection comprises the following steps: an operational state or a fault state. The state of the interval virtual measurement and control unit for self-checking comprises the following steps: an operational state, a hot standby state, or a fault state. When the interval virtual measurement and control unit carries out self-checking, if the interval virtual measurement and control unit is in an abnormal state, the running light is automatically turned off, and the interval virtual measurement and control unit is switched to a fault state.
Further, when the interval virtual measurement and control unit is in a hot standby state or a fault state, the network port communication functions of the station control layer and the process layer are closed. Specifically, the network port communication function is closed as follows: and normally receiving the GOOSE and SV of the process layer, normally receiving the GOOSE of the station control layer, not sending the GOOSE of the station control layer and the process layer, not uploading MMS, and not responding to MMS downlink commands.
Further, the cluster measurement and control module further comprises: and (4) switching on and off the soft pressing plate by the interval virtual measurement and control unit n. When the single-interval entity measurement and control unit fails, the corresponding interval virtual measurement and control unit can be manually put in through the interval virtual measurement and control unit n switching soft pressing plates. Wherein N is the numerical range of 1-N, and N is the maximum numerical value of the isolated virtual measurement and control units in the cluster measurement and control module.
When the interval entity measurement and control units are in the running state, if the soft pressing plates of the corresponding interval virtual measurement and control units are put into use, the corresponding virtual measurement and control units are in the hot standby state on the premise that the cluster measurement and control module is normal in self-inspection.
Specifically, when the cluster measurement and control module is in an automatic input mode, the entity measurement and control module and the cluster measurement and control module perform information interaction through a station control layer GOOSE. And/or information interaction among a plurality of interval virtual measurement and control units of the cluster measurement and control module is received and transmitted through a station control layer GOOSE, and self-receiving of messages is achieved by adopting an LOOPBACK LOOPBACK technology. And/or the cluster measurement and control module forwards the received GOOSE information to the corresponding interval virtual measurement and control units according to the configuration file, and can simultaneously input a plurality of interval virtual measurement and control units.
Fig. 4 is a flowchart of a measurement and control method for inter-bay electrical equipment of an intelligent substation according to an embodiment of the present invention.
Correspondingly, referring to fig. 4, a second aspect of the embodiment of the present invention provides a measurement and control method for inter-bay electrical devices of an intelligent substation, which measures and controls a plurality of inter-bay electrical devices of the intelligent substation by using the measurement and control system for inter-bay electrical devices of the intelligent substation, and includes the following steps:
and S100, acquiring state signals of a plurality of single-interval entity measurement and control units in real time.
And S200, judging whether the state signal of the single-interval entity measurement and control unit is a fault signal.
And S300, if the state signal of the single-interval entity measurement and control unit is a fault signal, switching the interval virtual measurement and control unit corresponding to the single-interval entity measurement and control unit in the fault state into an operating state.
S400, if the state signal of the single-interval entity measurement and control unit is not a fault signal, the interval virtual measurement and control unit corresponding to the single-interval entity measurement and control unit is maintained in a hot standby state.
Further, in a specific implementation manner of this embodiment, after switching the interval virtual measurement and control unit corresponding to the single interval entity measurement and control unit in the failure state to the operation state in step S300, the method further includes:
s310, detecting a state signal of the single-interval entity measurement and control unit in a fault state in real time;
and S320, if the state signal of the single-interval entity measurement and control unit in the fault state is recovered to be in the running state, switching the corresponding interval virtual measurement and control unit in the running state to be in the hot standby state.
Further, the step S310 of detecting the status signal of the single-interval entity measurement and control unit in the fault status in real time specifically includes the following steps:
and S311, detecting the sending states of the process layer GOOSE message and the station control layer GOOSE message in real time.
S312, judging the online state of the single-interval entity measurement and control unit according to the sending state of the GOOSE message.
S313, if the interval virtual measurement and control unit receives the process layer GOOSE message and the station control layer GOOSE message at the same time, determining that the corresponding single interval entity measurement and control unit is in an online state, and locking the investment of the interval virtual measurement and control unit.
And S314, if the interval virtual measurement and control unit does not receive the process layer GOOSE message and the station control layer GOOSE message at the same time, determining that the corresponding single-interval entity measurement and control unit is in an off-line state.
And S315, if the interval virtual measurement and control unit does not receive the process layer GOOSE message and the station control layer GOOSE message, switching the interval virtual measurement and control unit from the hot standby state to the running state.
The embodiment of the invention aims to protect a measurement and control system and a method for interval electrical equipment of an intelligent substation, wherein the measurement and control system comprises: the single-interval entity measurement and control module and the cluster measurement and control module; the single-interval entity measurement and control module comprises a plurality of single-interval entity measurement and control units, and the single-interval entity measurement and control units measure and control the interval electrical equipment of the intelligent substation; the cluster measurement and control module comprises interval virtual measurement and control units which are in one-to-one correspondence with the single interval entity measurement and control units, detects state signals of a plurality of single interval entity measurement and control units in real time, and switches the single interval entity measurement and control units into corresponding interval virtual measurement and control units when the single interval entity measurement and control units fail; the cluster measurement and control module is provided with control module control words, when the control module control words are first preset numerical values, the cluster measurement and control module is in a manual switching mode, and a single interval entity measurement and control unit in a fault state can be manually switched to a corresponding interval virtual measurement and control unit; when the control mode control word is a second preset numerical value, the cluster measurement and control module is in an automatic switching mode, and is automatically switched to the corresponding interval virtual measurement and control unit after receiving a fault signal of the single interval entity measurement and control unit. The technical scheme has the following effects:
by adopting a mode of single-interval entity measurement and control and cluster measurement and control for interval electrical equipment of the intelligent substation, the virtual measurement and control units correspond to the entity measurement and control units one to one, and the entity measurement and control units are switched to the corresponding virtual measurement and control units in the cluster measurement and control module after faults, so that the problem that the measurement and control configuration of a bay level is single and has no redundancy standby is solved, the self-healing of the measurement and control function of the interval electrical equipment is realized, and the robustness and the reliability of a monitoring system of the intelligent substation are improved.
It should be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. The utility model provides an intelligent substation separates electrical equipment system of observing and controling which characterized in that includes: the system comprises a single-interval entity measurement and control module and a cluster measurement and control module;
the single-interval entity measurement and control module comprises a plurality of single-interval entity measurement and control units, and the single-interval entity measurement and control units measure and control the interval electrical equipment of the intelligent substation;
the cluster measurement and control module comprises interval virtual measurement and control units which are in one-to-one correspondence with the single interval entity measurement and control units, and the cluster measurement and control module detects state signals of a plurality of single interval entity measurement and control units in real time and switches the single interval entity measurement and control units into corresponding interval virtual measurement and control units when the single interval entity measurement and control units fail;
the cluster measurement and control module is provided with control mode control words;
when the control mode control word is a first preset value, the cluster measurement and control module is in a manual switching mode, and the single-interval entity measurement and control unit in a fault state can be manually switched to the corresponding interval virtual measurement and control unit;
when the control mode control word is a second preset value, the cluster measurement and control module is in an automatic switching mode, and automatically switches to the corresponding interval virtual measurement and control unit after receiving a fault signal of the single interval entity measurement and control unit;
the cluster measurement and control module detects the state signal of the single-interval entity measurement and control unit in a fault state in real time, and the method comprises the following steps: detecting the sending states of the GOOSE messages of the process layer and the GOOSE messages of the station control layer in real time; judging the online state of the single-interval entity measurement and control unit according to the sending state of the GOOSE message; if the interval virtual measurement and control unit receives the process layer GOOSE message and the station level GOOSE message at the same time, determining that the corresponding single interval entity measurement and control unit is in an online state, and locking the input of the interval virtual measurement and control unit; if the interval virtual measurement and control unit does not receive the process layer GOOSE message and the station control layer GOOSE message at the same time, determining that the corresponding single interval entity measurement and control unit is in an off-line state; if the interval virtual measurement and control unit does not receive the process layer GOOSE message and the station control layer GOOSE message, switching the interval virtual measurement and control unit from a hot standby state to an operating state; and if the state signal of the single-interval entity measurement and control unit in the fault state is recovered to be in the running state, switching the corresponding interval virtual measurement and control unit in the running state to be in the hot standby state.
2. The intelligent substation bay electrical equipment measurement and control system of claim 1,
the interval virtual measurement and control units and the corresponding single interval entity measurement and control units have the same IP address, model, parameter and configuration.
3. The intelligent substation bay electrical equipment measurement and control system of claim 1,
the single-interval entity measurement and control unit and the interval virtual measurement and control unit can carry out self-checking in real time;
the state signal of the single-interval entity measurement and control unit for self-checking comprises: an operational state or a fault state;
the state of the interval virtual measurement and control unit for self-checking comprises the following steps: an operational state, a hot standby state, or a fault state.
4. The intelligent substation bay electrical equipment measurement and control system of claim 3,
when the interval virtual measurement and control unit is in a hot standby state or a fault state, the network port communication functions of a station control layer and a process layer are closed;
the network port communication function is closed as follows: and normally receiving the GOOSE and SV of the process layer, normally receiving the GOOSE of the station control layer, not sending the GOOSE of the station control layer and the process layer, not uploading MMS, and not responding to MMS downlink commands.
5. The intelligent substation bay electrical equipment measurement and control system of claim 1,
the cluster measurement and control module further comprises: the soft pressing plate is thrown and withdrawn by the interval virtual measurement and control unit n;
when the single-interval entity measurement and control unit fails, the corresponding interval virtual measurement and control unit can be manually put in through the n-throw-in and-out soft pressing plate of the interval virtual measurement and control unit;
wherein N is a numerical range of 1-N, and N is a maximum numerical value of the interval virtual measurement and control units in the cluster measurement and control module.
6. The intelligent substation bay electrical equipment measurement and control system of claim 1,
when the cluster measurement and control module is in an automatic switching mode, the entity measurement and control module and the cluster measurement and control module perform information interaction through a station control layer GOOSE; and/or
Information interaction among a plurality of interval virtual measurement and control units of the cluster measurement and control module is received and transmitted through the station control layer GOOSE, and message self-receiving and self-sending are achieved through an LOOPBACK LOOPBACK technology; and/or
And the cluster measurement and control module forwards the received GOOSE information to the corresponding interval virtual measurement and control units according to the configuration file, and can put a plurality of interval virtual measurement and control units into use at the same time.
7. An intelligent substation interval electrical equipment measurement and control method is characterized in that a plurality of interval electrical equipment of an intelligent substation are measured and controlled by the intelligent substation interval electrical equipment measurement and control system of any one of claims 1 to 6, and the method comprises the following steps:
acquiring state signals of a plurality of single-interval entity measurement and control units in real time;
judging whether the state signal of the single-interval entity measurement and control unit is a fault signal or not;
if the state signal of the single-interval entity measurement and control unit is a fault signal, switching an interval virtual measurement and control unit corresponding to the single-interval entity measurement and control unit in the fault state into an operating state;
if the state signal of the single-interval entity measurement and control unit is not a fault signal, maintaining the interval virtual measurement and control unit corresponding to the single-interval entity measurement and control unit in a hot standby state;
after the interval virtual measurement and control unit corresponding to the single-interval entity measurement and control unit in the fault state is switched to the running state, the method further comprises the following steps:
the real-time detection is in the status signal of single interval entity measurement and control unit of fault state, includes: detecting the sending states of the GOOSE messages of the process layer and the GOOSE messages of the station control layer in real time; judging the online state of the single-interval entity measurement and control unit according to the sending state of the GOOSE message; if the interval virtual measurement and control unit receives the process layer GOOSE message and the station level GOOSE message at the same time, determining that the corresponding single interval entity measurement and control unit is in an online state, and locking the input of the interval virtual measurement and control unit; if the interval virtual measurement and control unit does not receive the process layer GOOSE message and the station level GOOSE message at the same time, determining that the corresponding single interval entity measurement and control unit is in an off-line state; if the interval virtual measurement and control unit does not receive the process layer GOOSE message and the station level GOOSE message, switching the interval virtual measurement and control unit from a hot standby state to an operating state;
and if the state signal of the single-interval entity measurement and control unit in the fault state is recovered to be in the running state, switching the corresponding interval virtual measurement and control unit in the running state to be in the hot standby state.
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