CN202693775U - Intelligent substation load shedding test device with auto-switch-in standby power supply - Google Patents
Intelligent substation load shedding test device with auto-switch-in standby power supply Download PDFInfo
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- CN202693775U CN202693775U CN 201220204992 CN201220204992U CN202693775U CN 202693775 U CN202693775 U CN 202693775U CN 201220204992 CN201220204992 CN 201220204992 CN 201220204992 U CN201220204992 U CN 201220204992U CN 202693775 U CN202693775 U CN 202693775U
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Abstract
The utility model provides an intelligent substation load shedding test device with an auto-switch-in standby power supply. The device comprises a tested device and a load calculation part and further comprises an analog quantity input-output and conversion part and a load shedding executing and command conversion part, wherein the analog quantity input-output and conversion part comprises a total command executor unit, an analog quantity switch unit, a plurality of analog quantity input-output units, a plurality of combiner units and a SWV (Square Wave Voltammetry) network switch unit, and the number of the analog quantity input-output units is equal to that of the combiner units; the load shedding executing and command conversion part comprises a GOOSE (Generic Object Oriented Substation Event) network switch unit, a plurality of intelligent aggregation units and a plurality of load circuit breaker units, the number of the combiner units is equal to that of the intelligent aggregation units, and the number of the intelligent aggregation units is equal to that of the load circuit breaker units. The device adopts an independent system, so that risks brought to a power grid due to the use of a public channel in the test of an intelligent substation are effectively avoided. Besides, the device is simple and convenient to use and convenient to carry.
Description
Technical field
The utility model relates to transformer station's technical field, particularly relates to a kind of intelligent substation power supply prepared auto restart cutting load test unit.
Background technology
Prepared auto restart is the abbreviation that standby power supply drops into operative installations automatically.Acting as of the spare power automatic switching system of power supply: in the situation that working power loses suddenly, automatic put-in spair power source, the electricity consumption that recovers rapidly decompression equipment guarantees the continuity of powering.Aspect the raising power supply reliability, prepared auto restart has played key effect.
Describe as an example of the one main one traditional standby type intelligent substation mode of connection example, as shown in Figure 1: OCT is for being used for the photoelectron current transformer of intelligent substation; OPT is for being used for the photoelectron voltage transformer (VT) of intelligent substation; DL1 ... ..2DLn be respectively corresponding supply line and the isolating switch of load with electric line; DLF is section switch; 1M, 2M, 3M, 4M are bus; #1 interval circuit, #2 interval circuit are feed circuit; 1F1.........2Fn be the load electric line; D1 is the trouble spot.In this intelligent substation, along with the variation of system can form standby throwing mode automatically, such as a kind of mode wherein: DL1 isolating switch operation (in co-bit); The DLF section switch is standby to be thrown (in a minute position); DL2 isolating switch operation (in co-bit).Load on 3M and the 4M bus is supplied with by #1 interval circuit and #2 interval circuit by #1 main transformer and #2 main transformer respectively.When #1 interval circuit d1 point failure, possess under the standby throwing condition, the DLF section switch drops into, this just means that the load on 3M and the 4M bus supplies with by #2 interval circuit, if there was overladen risk in #2 interval circuit after all loads on 3M and the 4M bus dropped into, in order to eliminate overladen risk, the scene takes to excise successively realization according to the severity level of load.But the logic function to this part is tested owing to can not be verified strictly according to the facts by the restriction of field condition, and therefore the incorrect potential safety hazard of possible subsistence logic function, is head it off, needs design transformer station power supply prepared auto restart cutting load test unit.
It is more to carry out at the scene OCT, OPT loop that transformer station's power supply prepared auto restart cutting load experiment work relates to, and working line, standby circuit, N bar load circuit, each section busbar voltage etc. of throwing are arranged.As shown in Figure 1, have 4 circuits, 4 sections buses at least, the test of cutting load logic function needs the acquisition test electric current to calculate, so must there be special use that the peripheral hardware analog quantity channel of load current is provided.
Development along with computing machine and network technology, the raising of the intelligent degree of various power equipments, transformer station has developed into intelligent simulation from the conventional operation mode, and in engineering, obtained putting into practice, intelligent substation is the same with conventional substation also to be installed backup auto-activating device and realizes for improving power supply reliability, basic change has occured in intelligent substation and conventional substation comparison signal transmission medium on secondary circuit, replace cable by optical fiber, and the simulation of all collections and switching value etc. gather in public network all and transmission.Therefore, thus how solving cutting load test realizes the risk hidden danger brought to electrical network becoming problem demanding prompt solution by public network.
The utility model content
Based on this, be necessary to test the problem of bringing risk to electrical network for above-mentioned cutting load, a kind of intelligent substation power supply prepared auto restart cutting load test unit is provided.
A kind of intelligent substation power supply prepared auto restart cutting load test unit comprises: by test unit and load calculating section, also comprise: analog quantity is opened into leaving and conversion portion, cutting load execution and order conversion portion; Described analog quantity open into leave and conversion portion with by test unit and load calculating section, cutting load are carried out and the order conversion portion is connected successively;
Described analog quantity is opened into leaving and converting unit comprises: total command execution machine unit, analog quantity switch unit, a plurality of analog quantity are opened into leaving the unit, opening into the corresponding a plurality of combiners unit of the number of leaving the unit, SMV network switch unit with described analog quantity; Described total command execution machine unit is connected with described analog quantity total switch unit, described analog quantity total switch unit is also opened into leaving the unit with each analog quantity and is connected respectively, each analog quantity is opened into leaving the unit and is connected with a combiner unit, each combiner unit all is connected with described SMV network switch unit, and described SMV network switch unit also is connected by test unit and load calculating section with described;
Described cutting load is carried out and the order conversion portion comprises: GOOSE network switch unit, a plurality of intelligence corresponding with the number of described combiner unit gather the unit, and described intelligence gather the corresponding a plurality of load breakers unit of the number of unit; Described by test unit and the load calculating section be connected with described GOOSE network switch unit, described GOOSE network switch unit also gathers the unit with each intelligence and is connected respectively; Each intelligence gathers the unit and is connected with each load breaker unit.
Can be found out by above scheme, intelligent substation power supply prepared auto restart cutting load test unit of the present utility model, independently system has been adopted in the design of this device, thereby has effectively avoided testing the risk of bringing to electrical network because intelligent substation uses public passage; And owing to adopt independently process simulation form, all kinds of modes of connection of bus arrangement so that proving installation can suit.Simple when proving installation of the present utility model uses in addition, convenient, be easy to carry.
Description of drawings
Fig. 1 is one main one standby type intelligent substation one configuration schematic diagram;
Fig. 2 is the structural representation of a kind of intelligent substation power supply prepared auto restart cutting load test unit of the present utility model;
Fig. 3 is prepared auto restart action logic synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the technical solution of the utility model is further described.
Referring to shown in Figure 2, a kind of intelligent substation power supply prepared auto restart cutting load test unit comprises: by test unit and load calculating section, also comprise: analog quantity is opened into leaving and conversion portion, cutting load execution and order conversion portion; Described analog quantity open into leave and conversion portion with by test unit and load calculating section, cutting load are carried out and the order conversion portion is connected successively;
Described analog quantity is opened into leaving and converting unit comprises: total command execution machine unit, analog quantity total switch unit, a plurality of analog quantity are opened into leaving the unit, opening into the corresponding a plurality of combiners unit of the number of leaving the unit, SMV network switch unit with described analog quantity; Described total command execution machine unit is connected with described analog quantity total switch unit, described analog quantity total switch unit is also opened into leaving the unit with each analog quantity and is connected respectively, each analog quantity is opened into leaving the unit and is connected with a combiner unit, each combiner unit all is connected with described SMV network switch unit, and described SMV network switch unit also is connected by test unit with described;
Described cutting load is carried out and the order conversion portion comprises: GOOSE network switch unit, a plurality of intelligence corresponding with the number of described combiner unit gather the unit, and described intelligence gather the corresponding a plurality of load breakers unit of the number of unit; Describedly be connected with described GOOSE network switch unit by test unit, described GOOSE network switch unit also gathers the unit with each intelligence and is connected respectively; Each intelligence gathers the unit and is connected with each load breaker unit.
As an embodiment preferably, intelligent substation power supply prepared auto restart cutting load test unit of the present utility model can comprise that at least four analog quantitys open into leaving the unit.The specific works process of each unit in the utility model is described below:
At first describing described analog quantity opens into leaving and conversion portion.In this part:
Described total command execution machine unit is used for described analog quantity total switch unit sending controling instruction; And from described analog quantity total switch unit reception feedback data;
Above-mentioned steering order mainly comprises: be used for controlling described by the analog quantity of test unit size and described by the time command of test unit for controlling.By described analog quantity size and described time command, it is described big or small in the accurate analog quantity of constantly being scheduled to by test unit to control each, or the sync response operation, therefore can accurately simulate various load excision situations, the accuracy that improves simulation test;
Described analog quantity total switch unit is used for receiving the steering order of described total command execution machine unit output, carries out after passage disposes described steering order being distributed to each analog quantity and leaves the unit; And receive each simulation intake and leave the feedback data of unit, described feedback data is gathered transfer to described total command execution machine unit;
Described each analog quantity is opened into leaving the unit and is used for receiving the steering order that described analog quantity total switch unit is distributed, and carries out after the data-switching described steering order analog quantity being transferred to each combiner unit;
Described each combiner unit is used for the steering order analog quantity is converted to light signal, then transfers to described SMV network switch unit and gathers.As an embodiment preferably, can be connected by optical fiber between described each combiner unit and the described SMV network switch unit, so light signal just can be transmitted through the fiber to described SMV network switch unit and gathers;
Described SMV network switch unit is used for adopting SMV network exchange technology to carry out signal and gathers exchange (signal after described gathering is according to the IEC61850 protocol transmission); And receive corresponding to the feedback data of test unit.The SMV network exchange is adopted in the design of proving installation of the present utility model, can be so that analog acquisition address flexible configuration.Can be connected by optical fiber between by test unit with described in described SMV network switch unit in addition, the signal after then will gathering is by optical fiber, be allocated and transmitted to by corresponding interval in the test unit according to the address of subordinate.
As an embodiment preferably, can also comprise described by test unit corresponding device number and address with each in the steering order that described total command execution machine unit sends.Described analog quantity total switch unit reads device number and the address in the described steering order, and according to described device number and address described steering order is distributed to described analog quantity and opens into leaving the unit.By described device number and address are set in described steering order, described analog quantity is left the unit and can be found easily corresponding to the address of corresponding test interval in the test unit, thereby can finish rapidly the transmission of described steering order, raise the efficiency, reduce the risk of misinformation instruction.
Described analog quantity leave and conversion portion in relate to a plurality of (be assumed to be N) analog quantity and open into leaving the unit; This element is exported powerful analog quantity (containing electric current, voltage) after receiving higher level's teletype command, it is independently can distribute to different working lines, extension wire, load circuit as analog channel usefulness that a described N analog quantity is opened into leaving the unit, referring to Fig. 1, shown in Figure 2: analog quantity shown in Figure 2 can be opened into leaving unit 1 and distribute to No. 1 interval circuit such as Fig. 1; Analog quantity shown in Figure 2 opened into leaving unit 2 distribute to No. 2 interval circuits such as Fig. 1; Analog quantity shown in Figure 2 opened into leaving unit 3 distribute to load circuit 1F1 such as Fig. 1; Analog quantity shown in Figure 2 opened into leaving the load circuit 2F1...... that distributes to such as Fig. 1 unit 4 so analogize.
The following describes by test unit and load calculating section:
Described by test unit and the load calculating section comprised: tested device action logic module and the load computing module.This part is to be had by test unit inside, so only slightly describes among the application:
D1 point failure in Fig. 1, the charge condition of described device action logic module is as follows:
1. 1M bus, the equal three-phase of 2M bus have pressure;
2. DL1, DL2 are in co-bit, and DLF is in a minute position;
The tested backup auto-activating device function pressing plate of C drops into;
Above condition satisfies simultaneously by charging behind the delay time to be finished.
Course of action is described below:
Detect the 1M bus loss of pressure, #1 interval circuit no current, the 2M bus has pressure, time-delay tripping #1 interval circuit DL1 isolating switch, after the tripping of affirmation DL1 isolating switch, segmentation DLF isolating switch is hauled oneself willingly in time-delay.Action logic can be referring to shown in Figure 3.
Described device action logic module is at congenial section DLF isolating switch of action, and #2 interval circuit detects supply line's load, is called P1; Also detect load electricity consumption line load with timer, be called P2; This moment, P1 and P2 compared, if P1 ﹥ is P2, then by test unit excision load capacity EOP (end of program); If P1＜P2, then by test unit round excision load capacity according to the rules, successively first and second ... the .N round, just finish to then being excised the load capacity program by test unit to P1 ﹥ P2.
At last, in described cutting load execution and order conversion portion:
Described GOOSE network switch unit is used for that test unit is excised load capacity fill order (be called for short the cutting load order, this cutting load order is transmitted according to the IEC61850 agreement) and gathers and according to default address the cutting load call allocation is gathered the unit to each intelligence.As an embodiment preferably, the GOOSE network switch of the present utility model unit adopts GOOSE(Generic Object Oriented Substation Event, transformer substation case towards general object) the network exchange technology gathers the cutting load order, employing GOOSE technology can be so that load command transfer speed be faster, the one to one transmission of easier realization order;
Described each intelligence gathers carries out data exchanges (this orders according to the IEC61850 protocol transmission) after the unit is used for receiving the cutting load order, and the cutting load order that receives is converted to electric signal.As an embodiment preferably, described electric signal can be transmitted to each load breaker unit by cable or special-purpose outer layer insulation wire in the subordinate that each intelligence gathers the unit;
Cutting load is carried out after being used for receiving the cutting load order in described each load breaker unit, is just finished by test unit excision load capacity program during extremely to P1 ﹥ P2.
Preferably, described GOOSE network switch unit can be connected by optical fiber between the test unit with described.
Preferably, described each intelligence gathers unit (being assumed to be N) and comprises 1-N subdivision, and the higher level of each subdivision also can be connected on the described GOOSE network switch unit by optical fiber respectively.
Intelligent substation power supply prepared auto restart cutting load test unit of the present utility model compared with prior art, has following beneficial effect:
One, the utility model can be raised the efficiency by described device number and address are set in described steering order, reduces the risk of misinformation instruction;
Two, the utility model adopts independently process simulation form, all kinds of modes of connection of bus arrangement so that test unit can suit; And simple, convenient when using, be easy to carry;
Three, GOOSE network exchange technology has been adopted in the design of cutting load test unit of the present utility model, so that load command transfer speed is fast, and the one to one transmission of easier realization order;
Four, SMV network exchange technology has been adopted in the design of cutting load test unit of the present utility model, so that analog acquisition address flexible configuration;
Five, the device of the utility model design adopts IEC61850 interface protocol technical transmission data and signal, has solved intelligent substation power supply prepared auto restart cutting load test hard problem, has also filled up blank testing in this respect simultaneously;
The most important thing is that six, independently system has been adopted in the design of cutting load test unit of the present utility model, thereby effectively avoided testing the risk of bringing to electrical network because intelligent substation uses public passage.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (7)
1. intelligent substation power supply prepared auto restart cutting load test unit comprises: by test unit and load calculating section, it is characterized in that, also comprise: analog quantity is opened into leaving and conversion portion, cutting load is carried out and the order conversion portion; Described analog quantity open into leave and conversion portion with by test unit and load calculating section, cutting load are carried out and the order conversion portion is connected successively;
Described analog quantity is opened into leaving and converting unit comprises: total command execution machine unit, analog quantity switch unit, a plurality of analog quantity are opened into leaving the unit, opening into the corresponding a plurality of combiners unit of the number of leaving the unit, SMV network switch unit with described analog quantity; Described total command execution machine unit is connected with described analog quantity total switch unit, described analog quantity total switch unit is also opened into leaving the unit with each analog quantity and is connected respectively, each analog quantity is opened into leaving the unit and is connected with a combiner unit, each combiner unit all is connected with described SMV network switch unit, and described SMV network switch unit also is connected by test unit with described;
Described cutting load is carried out and the order conversion portion comprises: GOOSE network switch unit, a plurality of intelligence corresponding with the number of described combiner unit gather the unit, and described intelligence gather the corresponding a plurality of load breakers unit of the number of unit; Describedly be connected with described GOOSE network switch unit by test unit, described GOOSE network switch unit also gathers the unit with each intelligence and is connected respectively; Each intelligence gathers the unit and is connected with each load breaker unit.
2. intelligent substation power supply prepared auto restart cutting load test unit according to claim 1 is characterized in that, described by test unit and the load calculating section comprise: tested device action logic module, the load computing module.
3. intelligent substation power supply prepared auto restart cutting load test unit according to claim 1 is characterized in that, is connected by optical fiber between described each combiner unit and the described SMV network switch unit.
4. intelligent substation power supply prepared auto restart cutting load test unit according to claim 1 is characterized in that described SMV network switch unit is connected by optical fiber between the test unit with described.
5. intelligent substation power supply prepared auto restart cutting load test unit according to claim 1 is characterized in that described GOOSE network switch unit is connected by optical fiber between the test unit with described.
6. intelligent substation power supply prepared auto restart cutting load test unit according to claim 1 is characterized in that, described each intelligence gathers between unit and the described GOOSE network switch unit and is connected by optical fiber.
7. intelligent substation power supply prepared auto restart cutting load test unit according to claim 1 is characterized in that, described each intelligence gathers between unit and each load breaker unit and is connected by cable or special-purpose outer layer insulation wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220204992 CN202693775U (en) | 2012-05-09 | 2012-05-09 | Intelligent substation load shedding test device with auto-switch-in standby power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220204992 CN202693775U (en) | 2012-05-09 | 2012-05-09 | Intelligent substation load shedding test device with auto-switch-in standby power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628927A (en) * | 2012-05-09 | 2012-08-08 | 深圳供电局有限公司 | Spare power source automatic switch load testing device of intelligent transformer substation |
| CN103997117A (en) * | 2014-06-10 | 2014-08-20 | 国家电网公司 | Intelligent intertripping load spare power automatic switching device |
-
2012
- 2012-05-09 CN CN 201220204992 patent/CN202693775U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628927A (en) * | 2012-05-09 | 2012-08-08 | 深圳供电局有限公司 | Spare power source automatic switch load testing device of intelligent transformer substation |
| CN102628927B (en) * | 2012-05-09 | 2015-08-05 | 深圳供电局有限公司 | Intelligent substation spare power source automatic switch load test unit |
| CN103997117A (en) * | 2014-06-10 | 2014-08-20 | 国家电网公司 | Intelligent intertripping load spare power automatic switching device |
| CN103997117B (en) * | 2014-06-10 | 2015-12-02 | 国家电网公司 | Intelligent joint cutting load backup auto-activating device |
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