CN103178617B - Power grid operation state monitoring and analyzing system and method for power system - Google Patents

Power grid operation state monitoring and analyzing system and method for power system Download PDF

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Publication number
CN103178617B
CN103178617B CN201310114561.XA CN201310114561A CN103178617B CN 103178617 B CN103178617 B CN 103178617B CN 201310114561 A CN201310114561 A CN 201310114561A CN 103178617 B CN103178617 B CN 103178617B
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signal
converting equipment
power
state
geographic information
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CN103178617A (en
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甘雯
邵越
杨勇
柳昂
周丽华
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State Grid Corp of China SGCC
Huzhou Power Supply Bureau
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State Grid Corp of China SGCC
Huzhou Power Supply Bureau
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Abstract

The invention discloses a power grid operation state monitoring and analyzing system for a power system. The power grid operation state monitoring and analyzing system comprises an acquisition client, a terminal server, a data storage device and data acquisition nodes. Each data acquisition node comprises a signal transceiver, a geographic information processor and a signal controller, wherein the signal transceiver acquires a plurality of signals in a set area, the position information of the signals is determined through the maximum signal intensity in the geographic information processor, and the signals are processed through the signal controller and are transmitted to the acquisition client through the signal transceiver. The system has the advantages that the system is complementary with a conventional system, and functions required by scheduling are integrated; the abnormal operating mode, abnormality, early warning and other conditions of a power grid main rack can be intuitively reflected in real time through one interface; intelligent identification of a main transformer N-1, auxiliary processing functions, reactive comprehensive voltage analysis, short message alarm functions are realized; and later development and maintenance are easy. The invention also discloses a monitoring and analyzing method.

Description

Electric power system grid operation state and analytical system and monitoring and analytical method
Technical field
The present invention relates to electric power system electrical network power transmission and distribution technology, in more specific words it, the present invention relates to a kind of grid operation state, analysis and early warning system.
Background technology
Power network safety operation is subject to the impact of the many factors such as power system operating mode, flow situations, equipment state, and for traffic control, it is very important for how can grasping these information in time, intuitively and accurately.The dispatch automated system used in the market all adopts ground, county's even province and district, county's integral system, and data server is also same server, and user is not single for scheduling, there is following shortcoming like this:
1. wide and not smart.Due to for not single, the face of user too extensive, can not completely from local management and running reality of work, centralized dispatching required function is in integrally.
2. visualization interface deficient function.From an interface, intuitively can not reflect the abnormal running mode of all transformer stations, dispatcher needs to click transformer station one by one and could understand.
3. weak, the later maintenance of exploitability not easily.On the one hand, do not guarantee the safety of database, it is more to split hair threshold system; On the other hand, function redevelopment and later maintenance too rely on producer, and cost, maintenance cost are too high, and the function guaranteeing surely to realize wanting that differs.
Summary of the invention
The present invention mainly solves Railway Project: 1) realize the complementation with existing system, integrates scheduling required function; 2) concentrate, the realization of visualization interface, just can reflect the situation such as electrical network main grid structure abnormal running mode, exception, early warning intuitively, in real time from an interface; 3) INTELLIGENT IDENTIFICATION of main transformer N-1, aid in treatment function is realized and reactive voltage is comprehensively analyzed, short message alarm function; 4) later development, maintenance are easily.
Technical solution of the present invention: a kind of electric power system grid operation state and analytical system, contain collection client, terminal server and data storage, wherein gather client and obtain its 220KV converting equipment reactive voltage by connecting each electrical network converting equipment in a region, stable limit, 220KV main transformer N-1 state or electrical network abnormal condition signal, and be connected to described terminal server, data storage is connected with terminal server, its Curve guide impeller is: comprise the data acquisition node with described collection client's side link further, it comprises a signal transceiver, for receiving the described signal in a setting regions around it, a geographic information processing device, for confirming the positional information of the new converting equipment in described setting regions, a signal controller, for carrying out data processing to the described signal from the whole converting equipments in described predeterminable area, wherein, signal transceiver is connected to signal controller and geographic information processing device respectively, several signals in described setting regions are obtained by signal transceiver, decided the positional information of this signal by the signal strength signal intensity maximum in geographic information processing device, process received signal by described signal controller subsequently and be sent to collection client by signal transceiver.
In an embodiment of electric power system grid operation state and analytical system, described data acquisition node is sentence power line carrier mode by the immediate known converting equipment in geographical position of new converting equipment therewith or wireless mode obtains to the signal acquisition from described new converting equipment, and the geographical location information of wherein said known converting equipment defaults in a readable storage medium storing program for executing of described geographic information processing device.
In an embodiment of electric power system grid operation state and analytical system, comprise an output device further, for carrying out visual display to the data from described data acquisition node.
In an embodiment of electric power system grid operation state and analytical system, described geographic information processing device is made up of a gps receiver and process chip.
In an embodiment of electric power system grid operation state and analytical system, the Curve guide impeller of described terminal server comprises: a processor, design in order to:
Obtain the reactive power from data acquisition node and active power value, pass through carry out the reactive voltage state judging converting equipment, wherein λ is power factor, P active power value, Q reactive power value; At least monitor power grid transmission line stability, power grid transmission line line loss or power grid transmission line efficiency, classification process is carried out according to 220kV main transformer N-1 state analysis, wherein said classification process includes 1 class and meets N-1,2 classes do not meet N-1, overcurrent multiple is 1-1.3, and 3 class overcurrent multiples are 1.3-1.5, and 4 classes are for surpassing 1.5 times.
Accompanying drawing explanation
Fig. 1 is the structural principle block diagram of present system.
Embodiment
Fig. 1 is system general block diagram, schematically shows electric power system grid operation state and analytical system, wherein contains and gathers client 1, terminal server 2 and data storage 3.Gather client 1 and obtain its 220KV converting equipment reactive voltage, stable limit, 220KV main transformer N-1 state or electrical network abnormal condition signal by connecting each electrical network converting equipment in a region, and be connected to described terminal server 2, data storage 3 is connected with terminal server 2, comprise the data acquisition node 4 be connected with described collection client 1 further, it comprises a signal transceiver 41, for receiving the described signal in a setting regions around it; A geographic information processing device 42, for confirming the positional information of the new converting equipment in described setting regions; A signal controller 43, for carrying out data processing to the described signal from the whole converting equipments in described predeterminable area; Wherein, signal transceiver 41 is connected to signal controller 43 and geographic information processing device 42 respectively, several signals in described setting regions are obtained by signal transceiver 41, decided the positional information of this signal by the signal strength signal intensity maximum in geographic information processing device 42, process received signal by described signal controller 43 subsequently and be sent to collection client 1 by signal transceiver 41.
In one embodiment, described data acquisition node 4 is sentence power line carrier mode by the immediate known converting equipment in geographical position of new converting equipment therewith or wireless mode obtains to the signal acquisition from described new converting equipment, and the geographical location information of wherein said known converting equipment defaults in a readable storage medium storing program for executing of described geographic information processing device 42.
In one embodiment, comprise an output device 5 further, for carrying out visual display to the data from described data acquisition node 4.
In one embodiment, described geographic information processing device 42 is made up of a gps receiver and process chip.In one embodiment, geographical wiring diagram carries out automatic Identification by multimode variable and to breaker knife-like state, to the corresponding alarm door threshold value in various degree of circuit setting, different situation is distinguished with color, stop using as a servant for white, circuit overload are yellow also flicker etc. if any circuit, realize 220kV circuit, the display of the improper mode of 220kV plant stand and subordinate transformer station and abnormal conditions.And concentrate stability limitation setting monitoring module, main transformer N-1 alarm, intellectual analysis, ration the power supply always add computing module and 220kV electric substation is idle, voltage monitoring module in one, rear three functions set again by function and data store again read realize consulting of concrete condition.This design has the following advantages:
1) although the supervisory control system used at present has monitoring function, difference in functionality is distributed in different sub-interfaces, cannot monitor in real time, therefore at a time can only monitor an interface data at same main interface to each sub-interface data.
2) can check running status, the traffic overload situation of each change interconnection in real time, intuitively, when electrical network occurs abnormal, dispatcher can know in time; Distinguished the different situations of operation of power networks simultaneously by color, make dispatcher more very clear to current electric power netting safe running situation.
3) when avoiding relieving, situation that is unclear to power system operating mode handing-over or that omit occurs.
Carry out N-1 state analysis to 220kV main transformer, be specifically divided into 4 classes, 1 class meets N-1, and 2 classes do not meet N-1, and overcurrent multiple is 1-1.3, and 3 class overcurrent multiples are 1.3-1.5, and 4 classes are for surpassing 1.5 times.And provide strategy according to the permission overcurrent multiple of each main transformer and the permission overcurrent time of correspondence.According to analysis result, if super 1-1.3 doubly, blinking yellow illumination, 1.3-1.5 doubly pink colour flicker, show the 220Kv on off state of each main transformer, main transformer load and capacity simultaneously, when the initial load multiple before recollecting record N-1 truly occurs N-1, and the sustainable time after showing N-1, the sustainable time can automatic pouring timing display.
When main transformer heavy overload needs to ration the power supply, only need choose relevant circuit in accident rations the power supply tagmeme table always can add total addend of rationing the power supply, and avoids rationing the power supply more or rationing the power supply less, provides total application of load to carry out accident treatment to dispatcher rapidly by calculating.This type of fault of auxiliary dispatching person's emergency treatment, when there is main transformer N-1, ensure the stabilization of power grids and avoid operational outfit nonoverload prerequisite under, farthest realize rationing the power supply and becoming more meticulous, avoid unnecessary loss of outage.
Current dispatch automated system also provides main transformer N-1 function for monitoring, but lacks main transformer N-1 overload degree, overload sustainable time and strategy analysis of rationing the power supply.To sum up analyze, main transformer N-1 method for supervising provided by the invention has following advantage:
1) reflecting each 220kV main transformer N-1 situation, the overladen order of severity and dissimilar main transformer quickly and easily can time of continuous service;
2) when main transformer does not allow overload or main transformer N-1 fault, provide strategy of rationing the power supply, help the rapid control overhead of dispatcher, effectively ensure that the reliable and stable operation of electrical network and the safety of equipment.
In electrical network main grid structure (220kV/500kV), some equipment such as circuit, main transformer stops using as a servant the overload that may cause other operational outfits, exceed the safety and stability limit of regulation, power network safety operation is made to be subject to very test, therefore to Risk-warning can be provided in this kind of situation to be necessary.The corresponding different control strategy of different maintenance runs and different limits, need be added in supervisory control system by automation personnel at present, lack flexibility and independence, when personnel are busy or night mode monitor limit because not adding in time or upgrade when fault change.By reading the measuring point in Hisoon database, VB programming realization stability limitation is used to monitor freely arranging of content and algorithm.
Only have single monitoring function that is idle to electric substation, power rate in current system, Shortcomings in alarm, decision making function, simultaneously AVC system also existing defects in control strategy, causes part 220kV electric substation power rate examination point defective.So need for dispatcher on duty provides the supervisory control system of a set of special, voltage idle for 220kV electric substation, accurately warning information can be provided when power rate examination is defective, remind dispatcher to take counter-measure in time simultaneously, ensure that power rate, voltage resume are in acceptability limit.Require the SMS alarm function realizing the display of capacitor switching number of times and long-time power rate exception simultaneously.This functions of modules following 1) idle, power rate monitors 2) power rate alarm judges 3) capacitor actions number of times display 4) the out-of-limit duration, qualification rate statistics 5) phonic warning 6) term Voltage power rate gets over line short message sending and reminds 7) history alarm record queries 8) statistical report form inquiry 9) several functions such as floating curve chart display.
Wherein capacitor actions number of times can show the capacitor action frequency of a day, AVC locking when reaching the maximum times of setting, reminds regulation and control person need strengthen monitoring, manually adjusts.
In one embodiment, by function of sending short messages, the warning information of customization can be sent to and choose personnel by software automatically, is having special requirement also can adopt manual sending function, is being sent to by the short message content manually worked out and choose personnel.
In one embodiment, system architecture can be divided into the many levels such as acquisition layer, communication layers, data Layer, application layer, bears different functions respectively.For realizing gathering a large amount of real-time data of power grid, the present invention adopts Hisoon database, and client utility and Visual Basic are as developing instrument.Hisoon real-time data base provides clear, accurate electrical network measuring point data, uses the client development function meeting Microsoft Windows user interface standard completely to realize the exploitation of user's specific demand simultaneously.
In one embodiment, client (main interface) is arranged by main transformer, circuit arranges button and can realize circuit, the increase of main transformer limit, amendment, and stored in raw data base Microsoft Excel, when there being stability limitation requirement, select relevant device also as required from edlin formula, structure output shows to client (main interface).
In one embodiment, program is idle from each change 220kV side of database reading, have work value, according to wherein λ is power factor, and P gains merit, and Q is idle.When result of calculation is defective, sound, light alarm remind dispatcher, short message sending is to related personnel, and dispatcher can by checking interface concrete condition, throws and moves back group number, number of times, defective time decides to be which group capacitor enough manual interventions and throwing move back as capacitor.
Such as, can purple, blueness, the red circuit representing different electric pressure respectively in an OLED display 5, white is for stopping labour state, and yellow is improper.Between each transformer station (such as representing with circle) and each transformer station, switch is all arranged in interconnection both sides, switching value is set to multimode amount and sets normal condition as initial condition amount, on off state directly reads the Real-Time Switch state of Hisoon database, refreshing in every five minutes once (can arrange shorter), when on off state changes and be inconsistent with initial condition amount, switch glimmers.If switch divides position between two transformer substation sides, be abnormal condition, switch variable color is glimmered.The abnormal mode of each change is realized by all position of the switch state in retrieval station, and when occurring not being inconsistent with initial condition, on main interface, the color of transformer station becomes yellow.
Another embodiment of the present invention provides a kind of electric power system grid operation state and analytical system, for obtaining 220KV converting equipment reactive voltage, stable limit, 220KV main transformer N-1 state or the electrical network abnormal condition signal from gathering in a region of client 1, its monitoring includes with analytical method:
Gathered several signals of converting equipment in a setting regions in the mode of wireless connections by data acquisition node 4;
Contrasted with the parameter value of these several signals by geographic information processing device 42, to obtain the positional information of the signal of a maximum intensity value;
A request command is sent to the geographical position residing for this signal apart from immediate known converting equipment, to obtain the signal of this new converting equipment by signal controller 43;
Obtained the data message carried in the signal of described new converting equipment by signal controller 43, send to and gather client 1;
Process by gathering client 1 pair of data and store, set up the record in a new converting equipment and its geographical position, be sent to terminal server 2.
In one embodiment, data acquisition node 4 comprises a signal transceiver 41, for receiving the described signal in the setting regions around it; Geographic information processing device 42, for confirming the positional information of the new converting equipment in described setting regions; Signal controller 43, for carrying out data processing to the described signal from the whole converting equipments in described predeterminable area; Wherein, signal transceiver 41 is connected to signal controller 43 and geographic information processing device 42 respectively.

Claims (2)

1. electric power system grid operation state and analytical system, contain collection client, terminal server and data storage, wherein gather client and obtain its 220KV converting equipment reactive voltage by connecting each electrical network converting equipment in a region, stable limit, 220KV main transformer N ?1 state or electrical network abnormal condition signal, and be connected to described terminal server, data storage is connected with terminal server, it is characterized in that: comprise the data acquisition node with described collection client's side link further, it comprises a signal transceiver, for receiving the described 220KV converting equipment reactive voltage in a setting regions around it, stable limit, 220KV main transformer N ?1 state or electrical network abnormal condition signal, a geographic information processing device, for confirming the positional information of the new converting equipment in described setting regions, a signal controller, for from the described 220KV converting equipment reactive voltage of the whole converting equipments in described setting regions, stable limit, 220KV main transformer N ?1 state or electrical network abnormal condition signal carry out data processing, wherein, signal transceiver is connected to signal controller and geographic information processing device respectively, several signals in described setting regions are obtained by signal transceiver, by corresponding to the positional information that signal strength signal intensity maximum decides this signal in geographic information processing device, processed by described signal controller subsequently
Received signal is also sent to collection client by signal transceiver;
The signal acquisition of described data acquisition node to new converting equipment is that the geographical location information of wherein said known converting equipment defaults in a readable storage medium storing program for executing of described geographic information processing device by obtaining with power line carrier mode or wireless mode with the immediate known converting equipment in its geographical position;
Also comprise the output device that a terminal server connects, for carrying out visual display to the data from described data acquisition node;
Described geographic information processing device is coupled by a gps receiver and process chip and forms;
Described terminal server comprises: a processor, design in order to: obtain the reactive power from data acquisition node and active power value, pass through carry out the reactive voltage state judging converting equipment, wherein λ is power factor, P active power value, Q reactive power value; At least monitor power grid transmission line stability, power grid transmission line line loss or power grid transmission line efficiency, classification process is carried out according to 220kV main transformer N-1 state analysis, wherein said classification process includes 1 class and meets N-1,2 classes do not meet N-1, overcurrent multiple is 1-1.3, and 3 class overcurrent multiples are that 1.3-1.5 and 4 class overcurrent multiples are for surpassing 1.5 times.
2. an electric power system grid operation state and analytical system, for obtain from gather client a region in 220KV converting equipment reactive voltage, stable limit, 220KV main transformer N ?1 state or electrical network abnormal condition signal, it is characterized in that, monitoring and analytical method include:
Gathered several signals of converting equipment in a setting regions in the mode of wireless connections by data acquisition node;
Contrasted with the parameter value of these several signals by geographic information processing device, to obtain the positional information of the signal of a maximum intensity value;
A request command is sent to the geographical position residing for this signal apart from immediate known converting equipment, to obtain the signal of this new converting equipment by signal controller;
Obtained the data message carried in the signal of described new converting equipment by signal controller, send to collection client;
Data are processed by gathering client and stores, set up the record in a new converting equipment and its geographical position, be sent to terminal server;
Described data acquisition node comprises a signal transceiver, for receive the described 220KV converting equipment reactive voltage in the setting regions around it, stable limit, 220KV main transformer N ?1 state or electrical network abnormal condition signal; Geographic information processing device, for confirming the positional information of the new converting equipment in described setting regions; Signal controller, for from the described 220KV converting equipment reactive voltage of the whole converting equipments in described setting regions, stable limit, 220KV main transformer N ?1 state or electrical network abnormal condition signal carry out data processing; Wherein, signal transceiver is connected to signal controller and geographic information processing device respectively.
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CN105021925B (en) * 2015-07-15 2018-06-29 深圳市双合电气股份有限公司 Power monitoring system and method based on cement industry
CN105811588A (en) * 2016-05-26 2016-07-27 毛学辉 Electric power grid safety running monitoring and communication system
CN105914888A (en) * 2016-05-27 2016-08-31 姹や寒 Power grid operation state monitoring and communication system and method
CN106655193A (en) * 2016-11-10 2017-05-10 国网浙江省电力公司湖州供电公司 Newsletter database-based power flow analysis method of distribution network
CN107872062A (en) * 2017-12-22 2018-04-03 国网河北省电力有限公司衡水供电分公司 A kind of anti-method for sending reactive limit value
CN109146434A (en) * 2018-10-24 2019-01-04 云南电网有限责任公司信息中心 A kind of visualizing monitor platform and method towards digital electric network business

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