CN102738789A - Economical dispatch control system for cascade power station - Google Patents
Economical dispatch control system for cascade power station Download PDFInfo
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Abstract
The invention relates to an economical dispatch control system for a cascade power station. The system is characterized in that a host server, a history server and a voice workstation serve as an engineering work station, and an operator workstation, a large-screen projection and a GPS (Global Positioning System) system are connected in parallel on a main control line; and through the reverse regulation of an upper-level large capacity power station by a small capacity power station, a load difference is safely and smoothly transferred to another adjustable power station. By using the economical dispatch control system for the cascade power station provided by the invention, the flow of an upper-level power station unit can be effectively controlled through the flow of a lower-level power station; the water rate is lowered, the economic benefit of the power station is increased, the cost recovery time is effectively reduced, and thus the current low-carbon economic development trend is conformed to.
Description
Technical field
The present invention relates to a kind of economic dispatch control system, particularly be used for the economic dispatch control system of step hydropower station in the control of basin, domestic water power station, belong to water power industry monitoring technique field.
Background technology
At present; Each water power step basin is all in the Development Strategy of carrying out " river basin development; develop at a progressive speed "; But in basin hydroelectric development process, exist all dependence experiences of cascaded hydropower stations and do generation schedule, not only wasted preferential hydropower resources, and be unfavorable for step hydropower station crowd's sustainable development really.In addition, any one has an accident and all can influence the generator operation in other power stations in running in each power station, also causes unnecessary influence for power scheduling.
Because domestic basin economic dispatch control industrialization still is in developing stage; Some specific control model is also had blank; When handling subordinate's power station maximum generation flow than the little operating mode of higher level power station maximum generation flow; Basically be that the relation of exerting oneself of leaning on the operations staff rule of thumb to come to fix related power station according to certain ratio is controlled subordinate's power station water level in safe range, waste time and energy and effectively to utilize the adjustable nargin in power station.The deficiency that basin, domestic water power station is controlled at when handling the less operating mode of subordinate's power plant discharge has: (1), the no subordinate of software power station itself are to the reverse regulatory function in higher level power station; (2), the ratio of exerting oneself that manually matees related power station based on operating experience by the power station operations staff; (3), related power station adjustable extent underaction; (4), operations staff's prison dish pressure is big.
Summary of the invention
The object of the present invention is to provide a kind of economic dispatch control system that is used for the step hydropower station; It is through each hydroelectric plant's combined dispatching of step and optimization operation; Confirm the reasonable operational mode of reservoir and unit, realize the safety and economic operation of basin reservoirs at different levels and unit, improve hydroelectric plant's efficient; Reduce frequent manual adjustment, create the business economic benefit.
Technical scheme of the present invention is achieved in that the economic dispatch control system that is used for the step hydropower station, by host server, and history server, phonological working station; The engineer work station, operator workstation, large screen projection, gps system is formed; It is characterized in that: host server, history server, phonological working station, engineer work station; Operator workstation, large screen projection, gps system are connected in parallel on the master control circuit;
Host server adopts the two-node cluster hot backup working method, has universal character QWERTY keyboard (band mouse), LCD, the operation automation of its management " each power station ", the i.e. automatic generation control in each power station (AGC); Automatism voltage control (AVC); Host server and each monitoring power station system carry out communication, obtain each power station real-time electric power information, issue the regulating and controlling order;
History server adopts the Mysql database software to be installed in the 2 cover redundant servers, and each monitoring power station system, trapeziodal modulation central monitor system all devices service data are carried out long preservation;
Operator workstation is done real time monitoring to production, the equipment operation of power plant; Obtain required various information; The operating right that operator workstation provides many group different safety class for the operations staff of different responsibilities, should be able to discern several has the user of password separately to each rank operating right down, before the entering; Authorize the operations staff must register " user name ", pass word, make each user independently to get into and to withdraw from through the password operation; The graphics system of operator workstation is a full graphics Chinese dynamic menu; Have complete means and realize figure roaming, zoom and mobile arbitrarily; Can be easily figure be set up, expanded, amplification, translation, increases/delete, stirs etc.; Operator workstation can be automatically or through operations staff's calling, show in real time running status, the capital equipment of " each power station " interior main system dynamic operation process, accident and fault, related parameter and operation monitoring figure arranged, operate pictures such as winding diagram, and trend curve, various list, measuring point index etc.; Status of equipment on the periodic refreshing picture and service data; And the picture to accident alarming has highest priority, can cover other picture that is showing, releases picture during accident automatically and instructs with handling; And can show relevant history parameters and form through operations staff's calling; The engineer work station is to system maintenance, administrative staff make amendment system parameters, revise definite value, increase and revise database, picture and form;
Functions such as voice/telephone call, Help by Phone, accident automatic paging (ON-CALL) and SMS warning are accomplished at the phonological working station;
Be furnished with 2 GPS main frames and 1 redundant switching device shifter, 1 cover signal extension device in the gps system; In the signal extension device, contain 4 RS232; 8 RJ-45 interfaces, 2 GPS main frames are accepted satellite-signal respectively and are transmitted signals in the signal extension device through switching device shifter, and insert 2 cover host exchanges through Ethernet interface respectively; Through monitor network, to the computer in the whole network carry out clock to the time.
Its concrete operating procedure is following:
1) host server receives power station, the full basin gross capability that net that real-time monitoring system sends transfers the EMS system to assign; The basin water rain condition information in the exerting oneself of each power station of collection site, each unit, state information and the water adjusting system simultaneously; With reference to the historical datas such as various control strategies of storing in the history server; Calculate the controlled target in each power station and each unit output in the basin through economy, safe operation boundary conditions such as full basin gross capability, head, unit efficiency, unit associating vibrating area, letdown flow, lower reservoir water-heads, calculate according to the operational formula of following target function:
(1)
N is the number in hydroelectric station in the formula; Zui is an i level power station upper pond level; Zsi is the upper reaches, i level power station designated water levels; Qi is an i level power plant discharge.When | Zui – Zsi|>=△ Zi,
=1; When | Zui – Zsi|＜△ Zi,
=0; △ Zi is the dead band value of the upper reaches, i level power station designated water level.
Constraints
(1) network load balance
Pi is to exert oneself in i level hydroelectric station in the formula; Ps is that constant load is given in whole step dispatching of power netwoks.
(2) water balance condition
Vi in the formula, t are i reservoir capacity at the beginning of the t period; Vi, t+1 are t period Mo i reservoir capacity; Spacer segment when Δ t is; QINi, t are i level power station t period reservoir inflow; Qi, t fully utilize flow the i level power station t period.
(3) reservoir reservoir level constraint
(4) output of power station constraint
Pimin?≤?Pi ≤?Pijl (6)
Pijh?≤?Pi ≤?Pikl ?(7)
Pimh?≤?Pi ≤?Pimax (8)
Pijl is the lower limit of exerting oneself that i level power station j can not the operation area in the formula; Pijh is the upper limit of exerting oneself that i level power station j can not the operation area; M be can not the Operational Zone number; J=1 ~ m; K=j+1.
Derivation algorithm wherein
Calculate the working head
of hydraulic generator unit
The general computing formula of
is:
Be difficult for to survey certainly because of the power plant tail water position,, can obtain practicality and head computing formula more accurately according to bernoulli equation:
(10)
is each unit volute hydraulic pressure average of generating electricity of i level power station in the formula, and
is i level power head correction factor.
Calculate power plant discharges at different levels
Because of each unit model of each power station of step, capacity basically identical, can certain power station equivalence be become a unit, can obtain certain grade of plant generator by the unit output computing formula and exert oneself:
is the efficient of equivalent unit in the formula.
Can get the generating flow in chopped-off head power station by formula (2), (4), (11):
(12)
Can calculate the generating flow in other power stations at different levels according to formula (4).
Calculating plant generators at different levels exerts oneself
Obtain
, under the condition of
; Can calculate plant generators at different levels according to formula (11) and exert oneself, be called initial solution.
The load adjustment
To above-mentioned initial solution, need the non-chopped-off head of inspection power station reservoir level, and suitably adjust exerting oneself of power station in normal range (NR) so that reservoir level is moved according to its reservoir level.The main thought of cascaded hydropower stations EDC load adjustment strategy is when certain grade of power station reservoir level of non-chopped-off head is too high, the many on-loads in this grade power station, otherwise, the few on-load in this grade power station.For certain grade of power station reservoir level, too high, normal, excessively low three kinds of states possibly appear, and the combinations of states of the power stations at different levels reservoir level of so non-chopped-off head just has 3 (N-1) to plant.
The maximum adjustment load △ Pmax of step hydropower station:
In the formula:
is the load adjusted value of unit reservoir level;
is the maximum of reservoir level and ordinary water level absolute difference in the step power stations at different levels.
Confirm certain reservoir level combination load increase and decrease situation in power stations at different levels down, increase load value and reduce load value and equate, specifically increase load value △ P+i, minimizing load value △ P-i difference formula as follows:
In the formula:
;
is that i level power station increases load umber (i.e. "+" number); Constant maybe the needs reduces if load in i level power station, and then
is 0.
In the formula:
;
is that load umber (i.e. "-" number) is reduced in i level power station; Constant maybe the needs increases if load in i level power station, and then
is 0.
2) controlled target that above-mentioned computing is obtained affacts each local control unit through northeast DianKeYuan centralized control system or unified platform I district supervisory control system; Realization to unit output, open/stop state and each all controlled device of power station in real time, accurately, reliable and control effectively, reach the maximized target of step hydropower station waterpower utilization rate; The control strategy that forms is stored to and is used for reference and the historical query that form control strategy next time in the history server; Operator workstation is that system provides man-machine interface, and display message is sent in the large screen projection, and the operator realizes the real-time monitoring to system through it; When fault or accident generation, send audio alert by the phonological working station, and fault or accident information unification are sent in the history server, one-way transmission to III district (not expression in the accompanying drawing) integrated warning system sends note and network alarming; The engineer work station is used for the maintenance of each server and network; Gps system 10 is connected in parallel on the master control circuit to each station server, work station provide unified clock, for the system failure and accident analysis provide foundation; Through of the reverse adjusting of little storage capacity power station, the difference of will loading safety, smoothly transfer to other adjustable power stations to the big storage capacity of higher level power station.
Good effect of the present invention is that each basin collection control central monitor system has adopted high performance computer and network system; With these high-performance computers and network is that the basin economic dispatch provides technical foundation; And adopt basin centralized management system with each collection control center, basin; Uniform dispatching is implemented in power station, whole basin, for the basin economic dispatch provides reliable management guarantee; For the step hydropower station, the Northeast; Under the freezing in the winter time situation in medium and small storage capacity power station; Little storage capacity power station receives in the winter time that gate is freezing to be influenced, and can not carry out effective storage capacity and regulate, for fear of causing the dam accident of overflowing; Require higher level power station letdown flow can not surpass subordinate's power station maximum generation and quote flow, therefore can control higher level power station unit flow through the flow in subordinate power station effectively; Can reduce rate of water consumption; Improving the effect of power station economic benefit more obviously shows; Reduced the cost recovery time effectively, met current low charcoal expanding economy trend, for step hydropower station, basin crowd's centralized control and economical operation provides reference; Under the prospect of each basin water TV university exploitation at present, this achievement has wide applications and higher promotional value.
Description of drawings
Fig. 1 is a hardware facility layout plan of the present invention.
Fig. 2 is a control structure block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described: as shown in Figure 1, host server 1 adopts two-node cluster hot backup working method, any station server fault with host server 2 servers; System still can normally move; Dispose a complete set of external equipment, had universal character QWERTY keyboard (band mouse), LCD; Host server 1, host server 2 are managed the operation automation in " each power station ", the i.e. automatic generation control in each power station (AGC) respectively; Automatism voltage control (AVC); Host server 1, host server 2 carry out communication with each monitoring power station system, obtain each power station real-time electric power information, issue the regulating and controlling order; Each monitoring power station system, trapeziodal modulation central monitor system all devices service data are carried out long preservation, and in history server 3 and the history server 4, server adopts the Mysql database software to be installed in the 2 cover redundant servers; Operator workstation 7 can be done real time monitoring to production, the equipment operation of power plant with operator workstation 8; Obtain required various information; The operating right that operator workstation provides many group different safety class for the operations staff of different responsibilities, should be able to discern several has the user of password separately to each rank operating right down, before the entering; Authorize the operations staff must register " user name ", pass word, make each user independently to get into and to withdraw from through the password operation.Operator workstation can send as: unit is opened/is stopped, active power increases/subtracts, reactive power increases/subtracts, the branch of circuit breaker branch/combined floodgate order, gate opening/shutdown command, isolating switch/order such as close, and can be provided with and revise each item set-point and limit value.The graphics system of operator workstation 8 is a full graphics Chinese dynamic menu; Have complete means and realize figure roaming, zoom and mobile arbitrarily; Can be easily figure be set up, expanded, amplification, translation, increases/delete, stirs etc.; Operator workstation can be automatically or through operations staff's calling, show in real time running status, the capital equipment of " each power station " interior main system dynamic operation process, accident and fault, related parameter and operation monitoring figure arranged, operate pictures such as winding diagram, and trend curve, various list, measuring point index etc.; Status of equipment on the periodic refreshing picture and service data; And the picture to accident alarming has highest priority, can cover other picture that is showing, releases picture during accident automatically and instructs with handling.And can show relevant history parameters and form etc. through operations staff's calling.Picture icon and Show Color definition should meet the regulation of China Power portion " computer control for hydropower station system basic fundamental condition (DL/T578-2008) " promulgated by the ministries or commissions of the Central Government.
6 pairs of system maintenances of engineer work station, administrative staff make amendment system parameters, revise definite value, increase and revise database, picture and form; The phonological working station 5 main functions such as voice/telephone call, Help by Phone, accident automatic paging (ON-CALL) and SMS warning of accomplishing, supervisory control system is removed the generation general alarm and is also produced telephone phonic alarm when important fault and accident appear in supervisory control system, and call voice is reported to the police automatically and is supported 4 road dialing automatically simultaneously; Telephone phonic alarm can dial according to predesignating automatically; Dialing sequence is undertaken by mode from rudimentary to senior, when certain one-level is a busy tone or when nobody answers at the appointed time, from its high one-level dialing of trend; Behind the other side's off-hook; Tell the other side's alarm content immediately, dispose 2 cover short message transmitting apparatus simultaneously, can important warning message be carried out short message and send; Send mode comprises: can select mass-sending also can select selectively to send automatically by object, by the period, different by supervisory level; Be furnished with 2 GPS main frames and 1 redundant switching device shifter, 1 cover signal extension device in the gps system 10; In the signal extension device, contain 4 RS232; 8 RJ-45 interfaces, 2 GPS main frames are accepted satellite-signal respectively and are transmitted signals in the signal extension device through switching device shifter, and insert 2 cover host exchanges through Ethernet interface respectively; Through monitor network, to the computer in the whole network carry out clock to the time.
Embodiment 1
Guia Hill reservoir and two ditch hydropower reservoir station storage capacity are bigger; Has a year regulating power; And Guia Hill reservoir and hill hydropower reservoir station are through overflowing loose diversion tunnel cascade; Therefore can regard the hill hydropower reservoir station as a year balancing reservoir (the hill water level is more than 671 meters the time--671 meters of-Guia Hill dead water levels when the Reservoir Inflow water level is lower than 671 meters, do not possess regulating power basically); Stone dragon hydropower reservoir station storage capacity is less, is daily regulation reservoir, does not possess regulating power basically.Winter must the northern river of the assurance power plant casual dam of water level in addition.The interval water consumption in power stations at different levels is very little, does not consider interval water consumption problem generally speaking.Local inflow can be set according to actual conditions.According to each power station distribution situation of step, can not consider that current stream reaches the time between the cascaded hydropower stations.
To characteristics such as the cascaded hydropower stations distribution of river, Songjiang, storage capacity, installed capacitys, set up based on river, the Songjiang cascaded hydropower stations EDC that optimizes the operation principle with reference to Mathematical Modeling.
1, target function
(1)
N is the number in hydroelectric station in the formula; Zui is an i level power station upper pond level; Zsi is the upper reaches, i level power station designated water levels; Qi is an i level power plant discharge.When | Zui – Zsi|>=△ Zi,
=1; When | Zui – Zsi|＜△ Zi,
=0; △ Zi is the dead band value of the upper reaches, i level power station designated water level.
2, constraints
(1) network load balance
Pi is to exert oneself in i level hydroelectric station in the formula; Ps is that constant load is given in whole step dispatching of power netwoks.
(2) water balance condition
Vi in the formula, t are i reservoir capacity at the beginning of the t period; Vi, t+1 are t period Mo i reservoir capacity; Spacer segment when Δ t is; QINi, t are i level power station t period reservoir inflow; Qi, t fully utilize flow the i level power station t period.
(3) reservoir reservoir level constraint
(4) output of power station constraint
Pimin?≤?Pi ≤?Pijl (6)
Pijh?≤?Pi ≤?Pikl ?(7)
Pimh?≤?Pi ≤?Pimax (8)
Pijl is the lower limit of exerting oneself that i level power station j can not the operation area in the formula; Pijh is the upper limit of exerting oneself that i level power station j can not the operation area; M be can not the Operational Zone number; J=1 ~ m; K=j+1.
3, derivation algorithm
The method of finding the solution above-mentioned model has a lot; Such as linear programming technique, Nonlinear Programming Method, dynamic programming etc.; But along with increasing of inequality constraints condition; Must cause finding the solution that difficulty increases and the time of finding the solution increases, even can not get feasible solution, seriously influence applying of cascaded hydropower stations EDC.For this reason, adopted simple and practical through engineering approaches algorithm.
Calculate the working head
of hydraulic generator unit
The general computing formula of
is:
Be difficult for to survey certainly because of the power plant tail water position,, can obtain practicality and head computing formula more accurately according to bernoulli equation:
4, calculate power plant discharges at different levels
Because of each unit model of each power station of step, capacity basically identical, can certain power station equivalence be become a unit, can obtain certain grade of plant generator by the unit output computing formula and exert oneself:
Can get the generating flow in chopped-off head power station by formula (2), (4), (11):
Can calculate the generating flow in other power stations at different levels according to formula (4).
5, calculating plant generators at different levels exerts oneself
Obtain
, under the condition of
; Can calculate plant generators at different levels according to formula (11) and exert oneself, be called initial solution.
6, load adjustment
To above-mentioned initial solution, need the non-chopped-off head of inspection power station reservoir level, and suitably adjust exerting oneself of power station in normal range (NR) so that reservoir level is moved according to its reservoir level.The main thought of cascaded hydropower stations EDC load adjustment strategy is when certain grade of power station reservoir level of non-chopped-off head is too high, the many on-loads in this grade power station, otherwise, the few on-load in this grade power station.For certain grade of power station reservoir level, too high, normal, excessively low three kinds of states possibly appear, and the combinations of states of the power stations at different levels reservoir level of so non-chopped-off head just has 3 (N-1) to plant.
The maximum adjustment load △ Pmax of step hydropower station:
In the formula:
is the load adjusted value of unit reservoir level;
is the maximum of reservoir level and ordinary water level absolute difference in the step power stations at different levels.
Can confirm certain reservoir level combination load increase and decrease situation in power stations at different levels down according to the load of table 1 adjustment Policy Table, increase load value and reduce load value and equate, specifically increase load value △ P+i, minimizing load value △ P-i difference formula as follows:
In the formula:
;
is that i level power station increases load umber (i.e. "+" number); Constant maybe the needs reduces if load in i level power station, and then
is 0.
In the formula:
;
is that load umber (i.e. "-" number) is reduced in i level power station; Constant maybe the needs increases if load in i level power station, and then
is 0.
7, load is checked
When reservoir level is between lowest water level and the peak level in non-chopped-off head power station,, pays the utmost attention to and satisfy the scheduling burden requirement if its water level of control occurs and satisfy the conflicting situation of scheduling burden requirement; Otherwise reservoir level is higher than peak level or is lower than under the lowest water level condition in non-chopped-off head power station, pays the utmost attention to its reservoir level of control.When causing scheduling set point and EDC apportioning cost to differ by more than the permissible value of scheduling set point and cascaded hydropower stations EDC apportioning cost difference because of above-mentioned adjustment; Need the power station load that reservoir level is between lowest water level and the peak level is readjusted, up to satisfying the scheduling burden requirement to greatest extent.
8, safe operation
(1) northern river reverse regulation
Special, when the Songjiang river valley is in winter,, can not open at Bei Jiang power station spillway arc door because freezing, and therefore, Shi Long power station unit letdown flow can not surpass the maximum generation in Bei Jiang power station and quote flow, to avoid causing casual dam, Bei Jiang power station accident.It is 123.59 m that Shi Long power station unit is quoted flow
3/ s, and the maximum generation in Bei Jiang power station is quoted flow 100 m
3/ s; Therefore the flow control Shi Long power station unit flow in power station, river to the north of necessary; Must guarantee that all unit flows of Shi Long power station are no more than Bei Jiang power station unit flow; The unit generation flow in corresponding Shuan Gou power station can not surpass Bei Jiang power station unit flow, and hill power station unit flow then can be unrestricted.
(2) water level arrives the locking of limit value flow
When the water level in subordinate power station arrived the capping value, higher level power station letdown flow can not surpass the current letdown flow in subordinate power station, to avoid causing casual dam, Bei Jiang power station accident.
(3) withdraw from automatically and automatic alarm function
Economic dispatch control (EDC) has automatic exit function of accident and automatic alarm function, can judge according to the real-time running state of each power station and electrical network, and the relevant important information of prompting operations staff guarantees safe, reliable, the stable operation of EDC system.
When multistage power station accident appears, crucial sampling source data is unreliable, water level abnormality is high/during situation such as low and relevant power station is uncontrollable, EDC can withdraw from and produce relevant audible and visual alarm information indicating operations staff manual intervention automatically and handle.
When manual operation occurring and do not satisfy the current safety service requirement, produce warning information and refusal when time operation; In the time of in water level gets into unusual dead zone range, produce early warning information.
(4) little sharing of load
For solving the step hydropower station to the slow problem of little load adjustment response speed, special consideration is carried out individual processing to little load value of establishing.
At first, set point needs within the rotation adjustable extent;
Secondly, the difference of twice set point in front and back is within little sharing of load difference range; Then, judge each power station water level situation and whether participate in EDC that the water level height preferentially increases, water level hangs down the principle that preferentially subtracts, and little load variations is exerted oneself born by a station.
(5) automatic startup-shutdown
Discharge characteristic according to river, Songjiang power plant; Analyze its combination of unit generation with long-time steady operation; In conjunction with artificial startup-shutdown priority and the current unit operation pattern of setting, draw unique startup-shutdown sequence, and according to current each unit controllable state; Calculate start in the sequence can not the Operational Zone with shutdown sequence in can not the Operational Zone, and the corresponding load threshold values and the load threshold values of shutting down correspondence of the platform number of respectively starting shooting.
When the assumed load value surpasses the controlled maximum size of rotation, get into the Auto Power On flow process, according to the comparison between set point and each threshold values, judging currently needs the start number and drives which platform machine, and triggering starts shooting makes.
When the assumed load value satisfies halt condition, shut down the comparison between the threshold values according to set point and each, judge which platform unit current needs stop, trigger and shut down order.
Claims (2)
1. the economic dispatch control system that is used for the step hydropower station, by host server, history server, phonological working station; The engineer work station, operator workstation, large screen projection, gps system is formed; It is characterized in that: host server, history server, the phonological working station is the engineer work station; Operator workstation,, large screen projection, gps system are connected in parallel on the master control circuit;
Host server adopts the two-node cluster hot backup working method, has universal character QWERTY keyboard (band mouse), LCD, the operation automation of its management " each power station ", the i.e. automatic generation control in each power station (AGC); Automatism voltage control (AVC); Host server and each monitoring power station system carry out communication, obtain each power station real-time electric power information, issue the regulating and controlling order;
History server adopts the Mysql database software to be installed in the 2 cover redundant servers, and each monitoring power station system, trapeziodal modulation central monitor system all devices service data are carried out long preservation;
Operator workstation is done real time monitoring to production, the equipment operation of power plant; Obtain required various information; The operating right that operator workstation provides many group different safety class for the operations staff of different responsibilities, should be able to discern several has the user of password separately to each rank operating right down, before the entering; Authorize the operations staff must register " user name ", pass word, make each user independently to get into and to withdraw from through the password operation; The graphics system of operator workstation is a full graphics Chinese dynamic menu; Have complete means and realize figure roaming, zoom and mobile arbitrarily; Can be easily figure be set up, expanded, amplification, translation, increases/delete, stirs etc.; Operator workstation can be automatically or through operations staff's calling, show in real time running status, the capital equipment of " each power station " interior main system dynamic operation process, accident and fault, related parameter and operation monitoring figure arranged, operate pictures such as winding diagram, and trend curve, various list, measuring point index etc.; Status of equipment on the periodic refreshing picture and service data; And the picture to accident alarming has highest priority, can cover other picture that is showing, releases picture during accident automatically and instructs with handling; And can show relevant history parameters and form through operations staff's calling;
The engineer work station is to system maintenance, administrative staff make amendment system parameters, revise definite value, increase and revise database, picture and form;
Functions such as voice/telephone call, Help by Phone, accident automatic paging (ON-CALL) and SMS warning are accomplished at the phonological working station;
Be furnished with 2 GPS main frames and 1 redundant switching device shifter, 1 cover signal extension device in the gps system; In the signal extension device, contain 4 RS232; 8 RJ-45 interfaces, 2 GPS main frames are accepted satellite-signal respectively and are transmitted signals in the signal extension device through switching device shifter, and insert 2 cover host exchanges through Ethernet interface respectively; Through monitor network, to the computer in the whole network carry out clock to the time.
2. the economic dispatch control system that is used for the step hydropower station according to claim 1 is characterized in that described concrete operating procedure is following:
1) host server receives power station, the full basin gross capability that net that real-time monitoring system sends transfers the EMS system to assign; The basin water rain condition information in the exerting oneself of each power station of collection site, each unit, state information and the water adjusting system simultaneously; With reference to the historical datas such as various control strategies of storing in the history server; Calculate the controlled target in each power station and each unit output in the basin through economy, safe operation boundary conditions such as full basin gross capability, head, unit efficiency, unit associating vibrating area, letdown flow, lower reservoir water-heads, calculate according to the operational formula of following target function:
N is the number in hydroelectric station in the formula; Zui is an i level power station upper pond level; Zsi is the upper reaches, i level power station designated water levels; Qi is an i level power plant discharge;
When | Zui – Zsi|>=△ Zi,
=1; When | Zui – Zsi|＜△ Zi,
=0; △ Zi is the dead band value of the upper reaches, i level power station designated water level;
Constraints
The network load balance
Pi is to exert oneself in i level hydroelectric station in the formula; Ps is that constant load is given in whole step dispatching of power netwoks;
The water balance condition
（3）
Vi in the formula, t are i reservoir capacity at the beginning of the t period; Vi, t+1 are t period Mo i reservoir capacity; Spacer segment when Δ t is; QINi, t are i level power station t period reservoir inflow; Qi, t fully utilize flow the i level power station t period;
The constraint of reservoir reservoir level
The output of power station constraint
Pimin?≤?Pi ≤?Pijl (6)
Pijh?≤?Pi ≤?Pikl ?(7)
Pimh?≤?Pi ≤?Pimax (8)
Pijl is the lower limit of exerting oneself that i level power station j can not the operation area in the formula; Pijh is the upper limit of exerting oneself that i level power station j can not the operation area; M be can not the Operational Zone number; J=1 ~ m; K=j+1;
2) controlled target that above-mentioned computing is obtained affacts each local control unit through northeast DianKeYuan centralized control system or unified platform I district supervisory control system; Realization to unit output, open/stop state and each all controlled device of power station in real time, accurately, reliable and control effectively, reach the maximized target of step hydropower station waterpower utilization rate; The control strategy that forms is stored to and is used for reference and the historical query that form control strategy next time in the history server; Operator workstation is that system provides man-machine interface, and display message is sent in the large screen projection, and the operator realizes the real-time monitoring to system through it; When fault or accident generation, send audio alert by the phonological working station, and fault or accident information unification are sent in the history server, one-way transmission to III district (not expression in the accompanying drawing) integrated warning system sends note and network alarming; The engineer work station is used for the maintenance of each server and network; Gps system 10 is connected in parallel on the master control circuit to each station server, work station provide unified clock, for the system failure and accident analysis provide foundation; Through of the reverse adjusting of little storage capacity power station, the difference of will loading safety, smoothly transfer to other adjustable power stations to the big storage capacity of higher level power station.
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