restricted © siemens industry, inc. 2014 all rights reserved.answers for infrastructure and cities....

Restricted © Siemens Industry, Inc. 2014 All rights reserved. Answers for infrastructure and cities.

Node-Breaker Modeling in PSS®EJoe Hood

Siemens Power Technologies International

WECC MVWG Meeting March 20th 2014 Salt Lake City

03-19-2014

Restricted © Siemens Industry, Inc. 2014 All rights reserved.


Node-breaker Modeling in PSS®EKey Points

• Available in Version 34• Planned for Q3 this year• Further integration with later minor releases

• Unobtrusive Implementation• There when you need it, but…• Out of the way when you don’t want it

• Full Integration into SAV and RAW formats• New data records attached to end of RAW file• No changes needed to existing data records to add Node-breaker topology

• Automatic Substation Node-breaker Topology Building• One-click process for building initial-pass topology directly from single line diagram

based on common arrangements (1 ½ breaker, double breaker, ring bus, etc.)• Substation Node-breaker single line diagrams drawn automatically

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Big Picture

Traditional Network Data

Node-breaker Data

Internal Network Model

TopologyProcessor

SLDs

AnalysisEngines

API Scripts

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PSS®E Node-Breaker Terminology

Substation

BusBranch

BranchNodes

Connection Devices

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Substation/Node/Bus Mapping

Substations BusesNodes

11

1

∞ ∞

∞

Key: Sub IDKey: (Sub ID, Node ID)

Key: Bus ID

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Branch Mapping

Node NI

Node NJ

Bus I

Bus J

(I, J, CKT)

Branch/2-winding Connection Record: (I, J, CKT, NI, NJ)3-winding Connection Record: (I, J, K, CKT, NI, NJ, NK)

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Terminal Device Connection Mapping

Node N1

Bus I

(I, MACHID)

Connection Record Format for All Device Types: (I, ID, NI)

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Mapping Example

1

2

34

5

6

7

8

9 10

(101, 102, ‘1’)

101

102

Substation 1

(101, ‘1’)

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RAW Format Extension

Substation Data

Node Data

Station Switching Device Data

Branch/Two Winding Connection DataThree winding transformer Connections

Load Connections

Shunt Connections

Machine Connections

Switched shunt Connections

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Substation Record

IS

Substation number (1 through 999997). No default allowed

NAME substation name, NAME may be up to twelve characters and may contain any combination of blanks, uppercase letters, numbers and special characters. NAME must be enclosed in single or double quotes if it contains any blanks or special characters. NAME is twelve blanks by default.

LATI

Substation latitude in degrees (-90.0 to 90.0). It is positive for North and negative for South, 0.0 by default

LONG Substation longitude in degrees. (-180.0 to 180.0). It is positive for East and negative for West, 0.0 by default

SRG Substation grounding DC resistance in ohms

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Node Record

IS Substation number (1 through 999997). No default allowedNI Node number (1 though 99). No default allowed.NAME Node name, NAME may be up to twelve characters and may

contain any combination of blanks, uppercase letters, numbers and special characters. NAME must be enclosed in single or double quotes if it contains any blanks or special characters. NAME is twelve blanks by default.

I

Topological Bus number (1 though 999997) in bus branch model. The electrical bus represents this node NI and others that are connected by closed switching devices.

STATUS Node status. One for in-service and zero for out-of-service, one by default.

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Connection Device Record

IS Substation number (1 through 999997). No default allowedNI From node number (1 though 99). The from node must be in the

substation IS. No default allowed.

NJ To node number (1 though 99). The to node must be in the substation IS. No default allowed.

CKTID two-character uppercase non-blank alphanumeric switching device identifier; CKT = 1 by default.

NAME Switching device name, NAME may be up to 12 characters and may contain any combination of blanks, uppercase letters, numbers and special characters. NAME must be enclosed in single or double quotes if it contains any blanks or special characters. NAME is 12 blanks by default.

TYPE C - Circuit breaker, S - Disconnect switch, Others..

STATUS

Switching device status. one for close and zero for open; ST = 1 by default.

NSTAT Switching device normal status. one for close and zero for open; ST = 1 by default.

X Switching device reactance; entered in pu. A non-zero value of X must be entered for each switching device. 0.0001 by default

RATE1 First rating; entered in either MVA or current expressed as MVA.

RATE2 Second rating; entered in either MVA or current expressed as MVA.

RATE3 Third rating; entered in either MVA or current expressed as MVA.

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Branch/Two Winding Connection Record

I From bus number. No default allowed.

J To bus number. No default allowed.

CKTID two-character uppercase non-blank alphanumeric switching device identifier; CKT = 1 by default.

NI From node number (1 though 99). If the electrical from bus has node breaker model, in other words it represents a set of nodes in a substation, the from node must be one node in the set and indicates the connections of branch within the substation. If the electrical from bus has no node breaker model, it is zero. No default allowed.

NJ To node number (1 though 99). If the electrical to bus has node breaker model, in other words it represents a set of nodes in a substation, the to node must be one node in the set and indicates the connections of branch within the substation. If the electrical to bus has no node breaker model, it is zero. No default allowed.

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Load Connection Record(Representative of Terminal Device Connection Records)

I bus number. No default allowed.

ID One- or two-character uppercase non-blank alphanumeric load identifier used to

distinguish among multiple loads at bus I. It is recommended that, at buses for which

a single load is present, the load be designated as having the load identifier 1. ID = 1

by default.NI node number (1 though 99). If the electrical bus has node

breaker model, in other words it represents a set of nodes in a substation, the node must be one node in the set and indicates the connections of the load within the substation. If the electrical bus has no node breaker model, it is zero. No default allowed.

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RAW Example

0 // Substations (I, STNAME, X, Y):1 'SUB 153' 1.0 1.00 // Nodes (SUBSTATION, BNODE, I, 'NODE NAME', STATUS):1 153 1 'SECTION 1 ' 11 153 2 'SECTION 2 ' 11 153 3 'SECTION 3 ' 11 153 4 'SECTION 4 ' 10 // Breakers (SUBSTATION, I, J, CKT, NAME, STATUS, NSTATUS, TYPE, X,...):1 1 2 '@1' 'BREAKER ' 1 1 0 0.00000 0.00010 0.0 0.0 0.0 1 2 3 '@1' 'BREAKER ' 1 1 0 0.00000 0.00010 0.0 0.0 0.0 1 3 4 '@1' 'BREAKER ' 1 1 0 0.00000 0.00010 0.0 0.0 0.0 1 4 1 '@1' 'BREAKER ' 1 1 0 0.00000 0.00010 0.0 0.0 0.00 // Branch Terminals (IBUS, JUBS, CKT, INODE, JNODE):153 154 '1 ' 2 1153 154 '2 ' 3 2153 3006 '1 ' 4 0153 152 '1 ' 1 0

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Automatic Substation Building

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Substation Data Persistence

• RAW File• Topology/Connectivity• Bus/Node Mappings• Switching Status

• Substation SLDs• Substation Layout• Annotations• Diagram Primitives (Drawings)

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Node-breaker SLD Links

Substation SLD

Bus-branch SLD

• Allows navigation between the two worlds

• We’re still working on the proper visual design and user experience• What should a bus look like vs a

Node?• Should double-clicking bus show• Node-breaker substation?

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Managing Substation SLDs

PSS®E File Data Manager

PSS®E

Substation SLD Repository

Setup Master Directoryfor SLD Files

• … Or just build substation diagrams on the fly on demand as needed.• Managing SLDs only necessary if you want to maintain a specific layout

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Interacting with Node-breaker Model

• Open/close breakers in SLDs• Edit data in network data grids• Manipulate via APIs• Soon to be incorporated in

CON/MON/SUB syntax, RAS definitions, etc

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Example APIs

# add/change substation data:station_data(i, realar, name)

# add/change node data:node_data(is, i, intgar, name)

# add/change switching device data:station_swd_data(is, i, j, ckt, intarg, realar, name)

# build substation topology:sbuildmodel(option, i)

# open beakers necessary to deenergize lineopen_line_with_breakers(I, J, CKT)

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Joe HoodProduct Manager – PSS®ESiemens PTI

Phone: +1 (803) 399-0563

Email: [email protected]

Contact

mailto:[email protected]

restricted © siemens industry, inc. 2014 all rights reserved.answers for infrastructure and cities....

Documents

restricted siemens industry

node id key

ni slide

bus id slide

special characters

double breaker

nk slide

shunt connections slide